S-1701 Series
www.sii-ic.com
HIGH RIPPLE-REJECTION LOW DRO POUT
CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
© Seiko Instruments Inc., 2004-2010 Rev.3.0_00
Seiko Instruments Inc. 1
The S-1701 Series, developed based on CMOS technology, is a voltage regulator with a reset function and integrates a
high-accuracy voltage detector with on-chip delay circuit and a pos itive v olt age regul ator with a l o w drop out voltag e and h ig h
output voltage on one chi p.
The S-1701 Series is availabl e in many type s according to the se lectio n of the voltage detector block of t he voltage detector,
including a SENSE pin input product. A built-in low on-resistance transist or provides a low dropout volt age and large output
current.
Small ceramic capacitors are available and an external capacitor for delay is needless. Small SOT-23-5 and SOT-89-5
packages realize high-density mounting.
Features
Regulator block
• Output voltage: 1.5 V to 5.0 V, selectable in 0.1 V steps.
• High-accuracy output voltage: ±1.0%
• High peak current capability: 400 mA output is possible (at VIN ≥ VOUT(S) + 2.0 V)*1
• Built-in ON/OFF circuit: Ensures long battery life.
During power-off: 0.1 μA typ., 1.0 μA max.
• Low ESR capacitor can be used: A ceramic capacitor of 1.0 μF or more can be used for the output
capacitor.
• High ripple rejection: 70 dB typ. (at 1.0 kHz)
• Built-in overcurrent protector: Overcurrent of output transistor can be restricted.
• Operating voltage range: 2.0 V to 6.5 V
Detector block
• Output voltage: 1.5 V to 5.5 V, selectable in 0.1 V steps.
• High-accuracy output voltage: ±1.0%
• Output mode: Nch open-drain active low output
• No need of an external capacitor for delay
• Three delay time settings: No delay (60 μs), 50 ms, 100 ms
• Operating voltage range: 0.8 V to 6.5 V
Whole regulator
• Low current consumption During operation: 85 μA typ.
• Lead-free, Sn 100%, halogen-free*2
*1. Attention should be paid to the power dissipation of the package when the output current is large.
*2. Refer to “ Product Name Structure” for details.
Applications
• Power supply and reset circuit for battery-powered devices
• Power supply for personal communication devices
• Power supply for home appliances
Packages
• SOT-23-5
• SOT-89-5
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
2
Block Diagrams
1. S-1701 Series A/B/C/G/H/J ty pes
ON/OFF pin : Provided
SENSE pin : VIN connection
ON/OFF
*1
Overcurrent
protector circuit
ON/OFF
circuit
Reference
voltage cir cuit
Reference
voltage circuit
VIN
VOUT
VSS
VDOUT
*1
+
−
+
−
*1. Parasitic diode
Oscillating
counter timer
(Delay circuit)
Figure 1
2. S-1701 Series D/E/F/K/L/M types
ON/OFF pin : Provided
SENSE pin : VOUT connection
*1. Parasitic diode
ON/OFF
*1
Overcurrent
protector circuit
ON/OFF
circuit
Reference
voltage cir cuit
Reference
voltage circuit
VIN
VOUT
VSS
VDOUT
*1
+
−
+
−
Oscillating
counter timer
(Delay circuit)
Figure 2
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 3
3. S-1701 Series N/P/Q types
ON/OFF pin : VIN connection
SENSE pin : Provided
*1. Parasitic diode
SENSE
*1
Overcurrent
protector circuit
ON/OFF
circuit
Reference
voltage cir cuit
Reference
voltage circuit
VIN
VOUT
VSS
VDOUT
*1
+
−
+
−
Oscillating
counter timer
(Delay circuit)
Figure 3
4. S-1701 Series R/S/T types
ON/OFF pin : VDOUT connection
SENSE pin : Provided
*1. Parasitic diode
SENSE
*1
Overcurrent
protector circuit
ON/OFF
circuit
Reference
voltage cir cuit
Reference
voltage circuit
VIN
VOUT
VSS
VDOUT
*1
+
−
+
−
Oscillating
counter timer
(Delay circuit)
Figure 4
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
4
5. S-1701 Series U/V/W types
ON/OFF pin : VIN connection
SENSE pin : VOUT connection
*1. Parasitic diode
*1
Overcurrent
protector circuit
ON/OFF
circuit
Reference
voltage cir cuit
Reference
voltage circuit
VIN
VOUT
VSS
VDOUT
*1
+
−
+
−
Oscillating
counter timer
(Delay circuit)
Figure 5
6. S-1701 Series X/Y/Z types
ON/OFF pin : VIN connection
SENSE pin : VIN connection
*1. Parasitic diode
*1
Overcurrent
protector circuit
ON/OFF
circuit
Reference
voltage cir cuit
Reference
voltage circuit
VIN
VOUT
VSS
VDOUT
*1
+
−
+
−
Oscillating
counter timer
(Delay circuit)
Figure 6
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 5
Product Name Structure
The product types, output voltage, detection voltage, and package types for the S-1701 Series can be selected at the
user’s request. Refer to the “1. Product name” for the meanings of the characters in the product name, “2. Function
list according to product type” for product types, “3. Package” regarding the package drawings and “4. Product
name list” for the full product names.
1. Product name
S-1701 x xx xx - xxxx x
Environmental code
U : Lead-free (Sn 100%), halogen-free
G : Lead-free (for details, please contact our sales office)
Package name (abbreviation) and packing specifications
*1
M5T1 : SOT-23-5, tape product
U5T1 : SOT-89-5, tape product
Detection voltage
*2
15 to 55
(e.g., when the output voltage is 1.5 V, it is expressed as 15.)
Output voltage
15 to 50
(e.g., when the output voltage is 1.5 V, it is expressed as 15.)
Product type
*3
A to Z (I and O are not provided)
*1. Refer to the tape specifications at the end of this book.
*2. In the S-1701D to S-1701F, S-1701K to S-1701M, and S-1701U to S-1701W types (that detect output
voltage), a reset signal may be output due to the undershoot of the output voltage when the input volt age or
load current changes transiently. Therefore, set the detection voltage after sufficient evaluation using actual
devices.
*3. Refer to the “2. Function list according to product type”.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
6
2. Function list according to product type
Table 1
Regulator Block Detector Block
Product Type ON/OFF Pin ON/OFF Logic SENSE Pin Release Delay Time
A Provided Active high VIN connection
(pin not provided) No delay (60 μs)
B Provided Active high VIN connection
(pin not provided) 50 ms
C Provided Active high VIN connection
(pin not provided) 100 ms
D Provided Active high VOUT connection
(pin not provided) No delay (60 μs)
E Provided Active high VOUT connection
(pin not provided) 50 ms
F Provided Active high VOUT connection
(pin not provided) 100 ms
G Provided Active low VIN connection
(pin not provided) No delay (60 μs)
H Provided Active low VIN connection
(pin not provided) 50 ms
J Provided Active low VIN connection
(pin not provided) 100 ms
K Provided Active low VOUT connection
(pin not provided) No delay (60 μs)
L Provided Active low VOUT connection
(pin not provided) 50 ms
M Provided Active low VOUT connection
(pin not provided) 100 ms
N VIN connection
(pin not provided) None Provided No delay (60 μs)
P VIN connecti on
(pin not provided) None Provided 50 ms
Q VIN connecti on
(pin not provided) None Provided 100 ms
R VDOUT connection
(pin not provided) None Provided No delay (60 μs)
S VDOUT connection
(pin not provided) None Provided 50 ms
T VDOUT connection
(pin not provided) None Provided 100 ms
U VIN connection
(pin not provided) None VOUT connection
(pin not provided) No delay (60 μs)
V VIN connecti on
(pin not provided) None VOUT connection
(pin not provided) 50 ms
W VIN connection
(pin not provided) None VOUT connection
(pin not provided) 100 ms
X VIN connection
(pin not provided) None VIN connection
(pin not provided) No delay (60 μs)
Y VIN connecti on
(pin not provided) None VIN connection
(pin not provided) 50 ms
Z VIN connection
(pin not provided) None VIN connection
(pin not provided) 100 ms
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 7
3. Package
Drawing Code
Package Name Package Tape Reel
SOT-23-5 MP005-A-P-SD MP005-A-C-SD MP005-A-R-SD
SOT-89-5 UP005-A-P-SD UP005-A-C-SD UP005-A-R-SD
4. Product name list
4. 1 S-1701 Series A type
ON/OFF pin : Provided ON/OFF logic : Active high
SENSE pin : VIN connection Release delay time : No delay (60 μs)
Table 2
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.5 V ± 1.0% 4.1 V ± 1.0% S-1701A1541-M5T1x −
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701A1815-M5T1x S-1701A1815-U5T1x
2.5 V ± 1.0% 2.0 V ± 1.0% S-1701A2520-M5T1x S-1701A2520-U5T1x
2.5 V ± 1.0% 2.1 V ± 1.0% S-1701A2521-M5T1x S-1701A2521-U5T1x
2.5 V ± 1.0% 2.2 V ± 1.0% S-1701A2522-M5T1x S-1701A2522-U5T1x
2.7 V ± 1.0% 2.8 V ± 1.0% S-1701A2728-M5T1x −
2.8 V ± 1.0% 2.5 V ± 1.0% S-1701A2825-M5T1x −
2.8 V ± 1.0% 3.3 V ± 1.0% S-1701A2833-M5T1x −
3.0 V ± 1.0% 2.4 V ± 1.0% S-1701A3024-M5T1x S-1701A3024-U5T1x
3.0 V ± 1.0% 2.5 V ± 1.0% S-1701A3025-M5T1x S-1701A3025-U5T1x
3.0 V ± 1.0% 2.6 V ± 1.0% S-1701A3026-M5T1x S-1701A3026-U5T1x
3.3 V ± 1.0% 2.6 V ± 1.0% S-1701A3326-M5T1x S-1701A3326-U5T1x
3.3 V ± 1.0% 2.7 V ± 1.0% S-1701A3327-M5T1x S-1701A3327-U5T1x
3.3 V ± 1.0% 2.8 V ± 1.0% S-1701A3328-M5T1x S-1701A3328-U5T1x
3.3 V ± 1.0% 3.0 V ± 1.0% S-1701A3330-M5T1x −
3.3 V ± 1.0% 3.1 V ± 1.0% S-1701A3331-M5T1x −
3.4 V ± 1.0% 3.0 V ± 1.0% S-1701A3430-M5T1x S-1701A3430-U5T1x
5.0 V ± 1.0% 4.0 V ± 1.0% S-1701A5040-M5T1x S-1701A5040-U5T1x
5.0 V ± 1.0% 4.1 V ± 1.0% S-1701A5041-M5T1x S-1701A5041-U5T1x
5.0 V ± 1.0% 4.2 V ± 1.0% S-1701A5042-M5T1x S-1701A5042-U5T1x
5.0 V ± 1.0% 4.3 V ± 1.0% S-1701A5043-M5T1x S-1701A5043-U5T1x
Remark 1. Please contact our sales office for products with an output voltage or detection voltage other than those
specified above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
8
4. 2 S-1701 Series B type
ON/OFF pin : Provided ON/OFF logic : Active high
SENSE pin : VIN connection Release delay time : 50 ms
Table 3
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701B1815-M5T1x S-1701B1815-U5T1x
1.8 V ± 1.0% 2.3 V ± 1.0% S-1701B1823-M5T1x −
1.8 V ± 1.0% 2.8 V ± 1.0% S-1701B1828-M5T1x −
2.5 V ± 1.0% 2.0 V ± 1.0% S-1701B2520-M5T1x S-1701B2520-U5T1x
2.5 V ± 1.0% 2.1 V ± 1.0% S-1701B2521-M5T1x S-1701B2521-U5T1x
2.5 V ± 1.0% 2.2 V ± 1.0% S-1701B2522-M5T1x S-1701B2522-U5T1x
3.0 V ± 1.0% 2.4 V ± 1.0% S-1701B3024-M5T1x S-1701B3024-U5T1x
3.0 V ± 1.0% 2.5 V ± 1.0% S-1701B3025-M5T1x S-1701B3025-U5T1x
3.0 V ± 1.0% 2.6 V ± 1.0% S-1701B3026-M5T1x S-1701B3026-U5T1x
3.3 V ± 1.0% 2.6 V ± 1.0% S-1701B3326-M5T1x S-1701B3326-U5T1x
3.3 V ± 1.0% 2.7 V ± 1.0% S-1701B3327-M5T1x S-1701B3327-U5T1x
3.3 V ± 1.0% 2.8 V ± 1.0% S-1701B3328-M5T1x S-1701B3328-U5T1x
3.3 V ± 1.0% 4.2 V ± 1.0% − S-1701B3342-U5T1x
3.4 V ± 1.0% 3.0 V ± 1.0% S-1701B3430-M5T1x S-1701B3430-U5T1x
5.0 V ± 1.0% 4.0 V ± 1.0% S-1701B5040-M5T1x S-1701B5040-U5T1x
5.0 V ± 1.0% 4.1 V ± 1.0% S-1701B5041-M5T1x S-1701B5041-U5T1x
5.0 V ± 1.0% 4.2 V ± 1.0% S-1701B5042-M5T1x S-1701B5042-U5T1x
5.0 V ± 1.0% 4.3 V ± 1.0% S-1701B5043-M5T1x S-1701B5043-U5T1x
4. 3 S-1701 Series C type
ON/OFF pin : Provided ON/OFF logic : Active high
SENSE pin : VIN connection Release delay time : 100 ms
Table 4
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701C1815-M5T1x S-1701C1815-U5T1x
1.8 V ± 1.0% 3.0 V ± 1.0% − S-1701C1830-U5T1x
2.5 V ± 1.0% 2.0 V ± 1.0% S-1701C2520-M5T1x S-1701C2520-U5T1x
2.5 V ± 1.0% 2.1 V ± 1.0% S-1701C2521-M5T1x S-1701C2521-U5T1x
2.5 V ± 1.0% 2.2 V ± 1.0% S-1701C2522-M5T1x S-1701C2522-U5T1x
3.0 V ± 1.0% 2.4 V ± 1.0% S-1701C3024-M5T1x S-1701C3024-U5T1x
3.0 V ± 1.0% 2.5 V ± 1.0% S-1701C3025-M5T1x S-1701C3025-U5T1x
3.0 V ± 1.0% 2.6 V ± 1.0% S-1701C3026-M5T1x S-1701C3026-U5T1x
3.3 V ± 1.0% 2.6 V ± 1.0% S-1701C3326-M5T1x S-1701C3326-U5T1x
3.3 V ± 1.0% 2.7 V ± 1.0% S-1701C3327-M5T1x S-1701C3327-U5T1x
3.3 V ± 1.0% 2.8 V ± 1.0% S-1701C3328-M5T1x S-1701C3328-U5T1x
3.3 V ± 1.0% 3.0 V ± 1.0% S-1701C3330-M5T1x −
3.4 V ± 1.0% 3.0 V ± 1.0% S-1701C3430-M5T1x S-1701C3430-U5T1x
5.0 V ± 1.0% 4.0 V ± 1.0% S-1701C5040-M5T1x S-1701C5040-U5T1x
5.0 V ± 1.0% 4.1 V ± 1.0% S-1701C5041-M5T1x S-1701C5041-U5T1x
5.0 V ± 1.0% 4.2 V ± 1.0% S-1701C5042-M5T1x S-1701C5042-U5T1x
5.0 V ± 1.0% 4.3 V ± 1.0% S-1701C5043-M5T1x S-1701C5043-U5T1x
Remark 1. Please contact our sales office for products with an output voltage or detection voltage other than those
specified above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 9
4. 4 S-1701 Series D type
ON/OFF pin : Provided ON/OFF logic : Active high
SENSE pin : VOUT connection Release delay time : No delay (60 μs)
Table 5
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701D1815-M5T1x S-1701D1815-U5T1x
1.8 V ± 1.0% 1.6 V ± 1.0% S-1701D1816-M5T1x −
1.8 V ± 1.0% 1.7 V ± 1.0% S-1701D1817-M5T1x −
2.5 V ± 1.0% 2.0 V ± 1.0% S-1701D2520-M5T1x S-1701D2520-U5T1x
2.5 V ± 1.0% 2.1 V ± 1.0% S-1701D2521-M5T1x S-1701D2521-U5T1x
2.5 V ± 1.0% 2.2 V ± 1.0% S-1701D2522-M5T1x S-1701D2522-U5T1x
2.5 V ± 1.0% 2.3 V ± 1.0% S-1701D2523-M5T1x −
2.5 V ± 1.0% 2.4 V ± 1.0% S-1701D2524-M5T1x −
2.5 V ± 1.0% 2.6 V ± 1.0% S-1701D2526-M5T1x −
2.7 V ± 1.0% 2.2 V ± 1.0% S-1701D2722-M5T1x −
3.0 V ± 1.0% 2.4 V ± 1.0% S-1701D3024-M5T1x S-1701D3024-U5T1x
3.0 V ± 1.0% 2.5 V ± 1.0% S-1701D3025-M5T1x S-1701D3025-U5T1x
3.0 V ± 1.0% 2.6 V ± 1.0% S-1701D3026-M5T1x S-1701D3026-U5T1x
3.3 V ± 1.0% 2.6 V ± 1.0% S-1701D3326-M5T1x S-1701D3326-U5T1x
3.3 V ± 1.0% 2.7 V ± 1.0% S-1701D3327-M5T1x S-1701D3327-U5T1x
3.3 V ± 1.0% 2.8 V ± 1.0% S-1701D3328-M5T1x S-1701D3328-U5T1x
3.3 V ± 1.0% 3.0 V ± 1.0% S-1701D3330-M5T1x −
3.4 V ± 1.0% 3.0 V ± 1.0% S-1701D3430-M5T1x S-1701D3430-U5T1x
5.0 V ± 1.0% 4.0 V ± 1.0% S-1701D5040-M5T1x S-1701D5040-U5T1x
5.0 V ± 1.0% 4.1 V ± 1.0% S-1701D5041-M5T1x S-1701D5041-U5T1x
5.0 V ± 1.0% 4.2 V ± 1.0% S-1701D5042-M5T1x S-1701D5042-U5T1x
5.0 V ± 1.0% 4.3 V ± 1.0% S-1701D5043-M5T1x S-1701D5043-U5T1x
Remark 1. Please contact our sales office for products with an output voltage or detection voltage other than those
specified above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
10
4. 5 S-1701 Series E type
ON/OFF pin : Provided ON/OFF logic : Active high
SENSE pin : VOUT connection Release delay time : 50 ms
Table 6
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701E1815-M5T1x S-1701E1815-U5T1x
2.5 V ± 1.0% 2.0 V ± 1.0% S-1701E2520-M5T1x S-1701E2520-U5T1x
2.5 V ± 1.0% 2.1 V ± 1.0% S-1701E2521-M5T1x S-1701E2521-U5T1x
2.5 V ± 1.0% 2.2 V ± 1.0% S-1701E2522-M5T1x S-1701E2522-U5T1x
2.7 V ± 1.0% 2.2 V ± 1.0% S-1701E2722-M5T1x −
3.0 V ± 1.0% 2.4 V ± 1.0% S-1701E3024-M5T1x S-1701E3024-U5T1x
3.0 V ± 1.0% 2.5 V ± 1.0% S-1701E3025-M5T1x S-1701E3025-U5T1x
3.0 V ± 1.0% 2.6 V ± 1.0% S-1701E3026-M5T1x S-1701E3026-U5T1x
3.3 V ± 1.0% 2.6 V ± 1.0% S-1701E3326-M5T1x S-1701E3326-U5T1x
3.3 V ± 1.0% 2.7 V ± 1.0% S-1701E3327-M5T1x S-1701E3327-U5T1x
3.3 V ± 1.0% 2.8 V ± 1.0% S-1701E3328-M5T1x S-1701E3328-U5T1x
3.3 V ± 1.0% 3.0 V ± 1.0% S-1701E3330-M5T1x −
3.4 V ± 1.0% 3.0 V ± 1.0% S-1701E3430-M5T1x S-1701E3430-U5T1x
5.0 V ± 1.0% 4.0 V ± 1.0% S-1701E5040-M5T1x S-1701E5040-U5T1x
5.0 V ± 1.0% 4.1 V ± 1.0% S-1701E5041-M5T1x S-1701E5041-U5T1x
5.0 V ± 1.0% 4.2 V ± 1.0% S-1701E5042-M5T1x S-1701E5042-U5T1x
5.0 V ± 1.0% 4.3 V ± 1.0% S-1701E5043-M5T1x S-1701E5043-U5T1x
4. 6 S-1701 Series F type
ON/OFF pin : Provided ON/OFF logic : Active high
SENSE pin : VOUT connection Release delay time : 100 ms
Table 7
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701F1815-M5T1x S-1701F1815-U5T1x
2.5 V ± 1.0% 2.0 V ± 1.0% S-1701F2520-M5T1x S-1701F2520-U5T1x
2.5 V ± 1.0% 2.1 V ± 1.0% S-1701F2521-M5T1x S-1701F2521-U5T1x
2.5 V ± 1.0% 2.2 V ± 1.0% S-1701F2522-M5T1x S-1701F2522-U5T1x
2.7 V ± 1.0% 2.2 V ± 1.0% S-1701F2722-M5T1x −
3.0 V ± 1.0% 2.4 V ± 1.0% S-1701F3024-M5T1x S-1701F3024-U5T1x
3.0 V ± 1.0% 2.5 V ± 1.0% S-1701F3025-M5T1x S-1701F3025-U5T1x
3.0 V ± 1.0% 2.6 V ± 1.0% S-1701F3026-M5T1x S-1701F3026-U5T1x
3.3 V ± 1.0% 2.6 V ± 1.0% S-1701F3326-M5T1x S-1701F3326-U5T1x
3.3 V ± 1.0% 2.7 V ± 1.0% S-1701F3327-M5T1x S-1701F3327-U5T1x
3.3 V ± 1.0% 2.8 V ± 1.0% S-1701F3328-M5T1x S-1701F3328-U5T1x
3.4 V ± 1.0% 3.0 V ± 1.0% S-1701F3430-M5T1x S-1701F3430-U5T1x
5.0 V ± 1.0% 4.0 V ± 1.0% S-1701F5040-M5T1x S-1701F5040-U5T1x
5.0 V ± 1.0% 4.1 V ± 1.0% S-1701F5041-M5T1x S-1701F5041-U5T1x
5.0 V ± 1.0% 4.2 V ± 1.0% S-1701F5042-M5T1x S-1701F5042-U5T1x
5.0 V ± 1.0% 4.3 V ± 1.0% S-1701F5043-M5T1x S-1701F5043-U5T1x
Remark 1. Please contact our sales office for products with an output voltage or detection voltage other than those
specified above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 11
4. 7 S-1701 Series G type
ON/OFF pin : Provided ON/OFF logic : Active low
SENSE pin : VIN connection Release delay time : No delay (60 μs)
Table 8
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
2.5 V ± 1.0% 2.4 V ± 1.0% S-1701G2524-M5T1x −
3.3 V ± 1.0% 3.1 V ± 1.0% S-1701G3331-M5T1x −
4. 8 S-1701 Series H type
ON/OFF pin : Provided ON/OFF logic : Active low
SENSE pin : VIN connection Release delay time : 50 ms
Table 9
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
5.0 V ± 1.0% 4.5 V ± 1.0% − S-1701H5045-U5T1x
4. 9 S-1701 Series M type
ON/OFF pin : Provided ON/OFF logic : Active low
SENSE pin : VOUT connection Release delay time : 100 ms
Table 10
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701M1815-M5T1x −
4. 10 S-1701 Series N type
ON/OFF pin : VIN connection ON/OFF logic : None
SENSE pin : Provided Release delay time : No delay (60 μs)
Table 11
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.5 V ± 1.0% 1.5 V ± 1.0% S-1701N1515-M5T1x S-1701N1515-U5T1x
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701N1815-M5T1x S-1701N1815-U5T1x
1.8 V ± 1.0% 2.4 V ± 1.0% − S-1701N1824-U5T1x
1.8 V ± 1.0% 2.7 V ± 1.0% S-1701N1827-M5T1x −
2.5 V ± 1.0% 1.5 V ± 1.0% S-1701N2515-M5T1x S-1701N2515-U5T1x
2.7 V ± 1.0% 1.5 V ± 1.0% S-1701N2715-M5T1x S-1701N2715-U5T1x
2.7 V ± 1.0% 2.4 V ± 1.0% S-1701N2724-M5T1x S-1701N2724-U5T1x
3.0 V ± 1.0% 1.5 V ± 1.0% S-1701N3015-M5T1x S-1701N3015-U5T1x
3.3 V ± 1.0% 1.5 V ± 1.0% S-1701N3315-M5T1x S-1701N3315-U5T1x
3.3 V ± 1.0% 3.0 V ± 1.0% S-1701N3330-M5T1x S-1701N3330-U5T1x
5.0 V ± 1.0% 1.5 V ± 1.0% S-1701N5015-M5T1x S-1701N5015-U5T1x
Remark 1. Please contact our sales office for products with an output voltage or detection voltage other than those
specified above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
12
4. 11 S-1701 Series P type
ON/OFF pin : VIN connection ON/OFF logic : None
SENSE pin : Provided Release delay time : 50 ms
Table 12
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.5 V ± 1.0% 1.5 V ± 1.0% S-1701P1515-M5T1x S-1701P1515-U5T1x
1.5 V ± 1.0% 2.7 V ± 1.0% S-1701P1527-M5T1x −
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701P1815-M5T1x S-1701P1815-U5T1x
2.5 V ± 1.0% 1.5 V ± 1.0% S-1701P2515-M5T1x S-1701P2515-U5T1x
2.7 V ± 1.0% 1.5 V ± 1.0% S-1701P2715-M5T1x S-1701P2715-U5T1x
2.8 V ± 1.0% 4.3 V ± 1.0% − S-1701P2843-U5T1x
2.8 V ± 1.0% 4.4 V ± 1.0% − S-1701P2844-U5T1x
3.0 V ± 1.0% 1.5 V ± 1.0% S-1701P3015-M5T1x S-1701P3015-U5T1x
3.3 V ± 1.0% 1.5 V ± 1.0% S-1701P3315-M5T1x S-1701P3315-U5T1x
5.0 V ± 1.0% 1.5 V ± 1.0% S-1701P5015-M5T1x S-1701P5015-U5T1x
4. 12 S-1701 Series Q type
ON/OFF pin : VIN connection ON/OFF logic : None
SENSE pin : Provided Release delay time : 100 ms
Table 13
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.5 V ± 1.0% 1.5 V ± 1.0% S-1701Q1515-M5T1x S-1701Q1515-U5T1x
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701Q1815-M5T1x S-1701Q1815-U5T1x
2.5 V ± 1.0% 1.5 V ± 1.0% S-1701Q2515-M5T1x S-1701Q2515-U5T1x
2.7 V ± 1.0% 1.5 V ± 1.0% S-1701Q2715-M5T1x S-1701Q2715-U5T1x
3.0 V ± 1.0% 1.5 V ± 1.0% S-1701Q3015-M5T1x S-1701Q3015-U5T1x
3.2 V ± 1.0% 2.7 V ± 1.0% − S-1701Q3227-U5T1x
3.2 V ± 1.0% 4.2 V ± 1.0% − S-1701Q3242-U5T1x
3.3 V ± 1.0% 1.5 V ± 1.0% S-1701Q3315-M5T1x S-1701Q3315-U5T1x
5.0 V ± 1.0% 1.5 V ± 1.0% S-1701Q5015-M5T1x S-1701Q5015-U5T1x
Remark 1. Please contact our sales office for products with an output voltage or detection voltage other than those
specified above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 13
4. 13 S-1701 Series R type
ON/OFF pin : VDOUT connection ON/OFF logic : None
SENSE pin : Provided Release delay time : No delay (60 μs)
Table 14
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.5 V ± 1.0% 1.5 V ± 1.0% S-1701R1515-M5T1x S-1701R1515-U5T1x
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701R1815-M5T1x S-1701R1815-U5T1x
2.5 V ± 1.0% 1.5 V ± 1.0% S-1701R2515-M5T1x S-1701R2515-U5T1x
2.7 V ± 1.0% 1.5 V ± 1.0% S-1701R2715-M5T1x S-1701R2715-U5T1x
3.0 V ± 1.0% 1.5 V ± 1.0% S-1701R3015-M5T1x S-1701R3015-U5T1x
3.3 V ± 1.0% 1.5 V ± 1.0% S-1701R3315-M5T1x S-1701R3315-U5T1x
5.0 V ± 1.0% 1.5 V ± 1.0% S-1701R5015-M5T1x S-1701R5015-U5T1x
4. 14 S-1701 Series S type
ON/OFF pin : VDOUT connection ON/OFF logic : None
SENSE pin : Provided Release delay time : 50 ms
Table 15
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.5 V ± 1.0% 1.5 V ± 1.0% S-1701S1515-M5T1x S-1701S1515-U5T1x
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701S1815-M5T1x S-1701S1815-U5T1x
2.5 V ± 1.0% 1.5 V ± 1.0% S-1701S2515-M5T1x S-1701S2515-U5T1x
2.7 V ± 1.0% 1.5 V ± 1.0% S-1701S2715-M5T1x S-1701S2715-U5T1x
3.0 V ± 1.0% 1.5 V ± 1.0% S-1701S3015-M5T1x S-1701S3015-U5T1x
3.3 V ± 1.0% 1.5 V ± 1.0% S-1701S3315-M5T1x S-1701S3315-U5T1x
5.0 V ± 1.0% 1.5 V ± 1.0% S-1701S5015-M5T1x S-1701S5015-U5T1x
4. 15 S-1701 Series T type
ON/OFF pin : VDOUT connection ON/OFF logic : None
SENSE pin : Provided Release delay time : 100 ms
Table 16
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.5 V ± 1.0% 1.5 V ± 1.0% S-1701T1515-M5T1x S-1701T1515- U5T1x
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701T1815-M5T1x S-1701T1815- U5T1x
2.5 V ± 1.0% 1.5 V ± 1.0% S-1701T2515-M5T1x S-1701T2515- U5T1x
2.7 V ± 1.0% 1.5 V ± 1.0% S-1701T2715-M5T1x S-1701T2715- U5T1x
3.0 V ± 1.0% 1.5 V ± 1.0% S-1701T3015-M5T1x S-1701T3015- U5T1x
3.3 V ± 1.0% 1.5 V ± 1.0% S-1701T3315-M5T1x S-1701T3315- U5T1x
3.3 V ± 1.0% 2.5 V ± 1.0% S-1701T3325-M5T1x −
5.0 V ± 1.0% 1.5 V ± 1.0% S-1701T5015-M5T1x S-1701T5015- U5T1x
Remark 1. Please contact our sales office for products with an output voltage or detection voltage other than those
specified above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
14
4. 16 S-1701 Series U type
ON/OFF pin : VIN connection ON/OFF logic : None
SENSE pin : VOUT connection Release delay time : No delay (60 μs)
Table 17
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701U1815-M5T1x S-1701U1815-U5T1x
2.5 V ± 1.0% 2.0 V ± 1.0% S-1701U2520-M5T1x S-1701U2520-U5T1x
2.5 V ± 1.0% 2.1 V ± 1.0% S-1701U2521-M5T1x S-1701U2521-U5T1x
2.5 V ± 1.0% 2.2 V ± 1.0% S-1701U2522-M5T1x S-1701U2522-U5T1x
3.0 V ± 1.0% 2.4 V ± 1.0% S-1701U3024-M5T1x S-1701U3024-U5T1x
3.0 V ± 1.0% 2.5 V ± 1.0% S-1701U3025-M5T1x S-1701U3025-U5T1x
3.0 V ± 1.0% 2.6 V ± 1.0% S-1701U3026-M5T1x S-1701U3026-U5T1x
3.3 V ± 1.0% 2.6 V ± 1.0% S-1701U3326-M5T1x S-1701U3326-U5T1x
3.3 V ± 1.0% 2.7 V ± 1.0% S-1701U3327-M5T1x S-1701U3327-U5T1x
3.3 V ± 1.0% 2.8 V ± 1.0% S-1701U3328-M5T1x S-1701U3328-U5T1x
3.4 V ± 1.0% 3.0 V ± 1.0% S-1701U3430-M5T1x S-1701U3430-U5T1x
5.0 V ± 1.0% 4.0 V ± 1.0% S-1701U5040-M5T1x S-1701U5040-U5T1x
5.0 V ± 1.0% 4.1 V ± 1.0% S-1701U5041-M5T1x S-1701U5041-U5T1x
5.0 V ± 1.0% 4.2 V ± 1.0% S-1701U5042-M5T1x S-1701U5042-U5T1x
5.0 V ± 1.0% 4.3 V ± 1.0% S-1701U5043-M5T1x S-1701U5043-U5T1x
4. 17 S-1701 Series V type
ON/OFF pin : VIN connection ON/OFF logic : None
SENSE pin : VOUT connection Release delay time : 50 ms
Table 18
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701V1815-M5T1x S-1701V1815-U5T1x
2.5 V ± 1.0% 2.0 V ± 1.0% S-1701V2520-M5T1x S-1701V2520-U5T1x
2.5 V ± 1.0% 2.1 V ± 1.0% S-1701V2521-M5T1x S-1701V2521-U5T1x
2.5 V ± 1.0% 2.2 V ± 1.0% S-1701V2522-M5T1x S-1701V2522-U5T1x
3.0 V ± 1.0% 2.4 V ± 1.0% S-1701V3024-M5T1x S-1701V3024-U5T1x
3.0 V ± 1.0% 2.5 V ± 1.0% S-1701V3025-M5T1x S-1701V3025-U5T1x
3.0 V ± 1.0% 2.6 V ± 1.0% S-1701V3026-M5T1x S-1701V3026-U5T1x
3.2 V ± 1.0% 2.7 V ± 1.0% S-1701V3227-M5T1x −
3.3 V ± 1.0% 2.5 V ± 1.0% S-1701V3325-M5T1x −
3.3 V ± 1.0% 2.6 V ± 1.0% S-1701V3326-M5T1x S-1701V3326-U5T1x
3.3 V ± 1.0% 2.7 V ± 1.0% S-1701V3327-M5T1x S-1701V3327-U5T1x
3.3 V ± 1.0% 2.8 V ± 1.0% S-1701V3328-M5T1x S-1701V3328-U5T1x
3.4 V ± 1.0% 3.0 V ± 1.0% S-1701V3430-M5T1x S-1701V3430-U5T1x
5.0 V ± 1.0% 4.0 V ± 1.0% S-1701V5040-M5T1x S-1701V5040-U5T1x
5.0 V ± 1.0% 4.1 V ± 1.0% S-1701V5041-M5T1x S-1701V5041-U5T1x
5.0 V ± 1.0% 4.2 V ± 1.0% S-1701V5042-M5T1x S-1701V5042-U5T1x
5.0 V ± 1.0% 4.3 V ± 1.0% S-1701V5043-M5T1x S-1701V5043-U5T1x
Remark 1. Please contact our sales office for products with an output voltage or detection voltage other than those
specified above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 15
4. 18 S-1701 Series W type
ON/OFF pin : VIN connection ON/OFF logic : None
SENSE pin : VOUT connection Release delay time : 100 ms
Table 19
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.6 V ± 1.0% 2.6 V ± 1.0% S-1701W1626-M5T1x −
1.8 V ± 1.0% 1.5 V ± 1.0% S-1701W1815-M5T1x S-170 1W1815-U5T1x
2.5 V ± 1.0% 2.0 V ± 1.0% S-1701W2520-M5T1x S-170 1W2520-U5T1x
2.5 V ± 1.0% 2.1 V ± 1.0% S-1701W2521-M5T1x S-170 1W2521-U5T1x
2.5 V ± 1.0% 2.2 V ± 1.0% S-1701W2522-M5T1x S-170 1W2522-U5T1x
3.0 V ± 1.0% 2.4 V ± 1.0% S-1701W3024-M5T1x S-170 1W3024-U5T1x
3.0 V ± 1.0% 2.5 V ± 1.0% S-1701W3025-M5T1x S-170 1W3025-U5T1x
3.0 V ± 1.0% 2.6 V ± 1.0% S-1701W3026-M5T1x S-170 1W3026-U5T1x
3.2 V ± 1.0% 2.7 V ± 1.0% S-1701W3227-M5T1x −
3.3 V ± 1.0% 2.4 V ± 1.0% − S-1701W3324-U5T1x
3.3 V ± 1.0% 2.6 V ± 1.0% S-1701W3326-M5T1x S-170 1W3326-U5T1x
3.3 V ± 1.0% 2.7 V ± 1.0% S-1701W3327-M5T1x S-170 1W3327-U5T1x
3.3 V ± 1.0% 2.8 V ± 1.0% S-1701W3328-M5T1x S-170 1W3328-U5T1x
3.4 V ± 1.0% 3.0 V ± 1.0% S-1701W3430-M5T1x S-170 1W3430-U5T1x
5.0 V ± 1.0% 4.0 V ± 1.0% S-1701W5040-M5T1x S-170 1W5040-U5T1x
5.0 V ± 1.0% 4.1 V ± 1.0% S-1701W5041-M5T1x S-170 1W5041-U5T1x
5.0 V ± 1.0% 4.2 V ± 1.0% S-1701W5042-M5T1x S-170 1W5042-U5T1x
5.0 V ± 1.0% 4.3 V ± 1.0% S-1701W5043-M5T1x S-170 1W5043-U5T1x
4. 19 S-1701 Series X type
ON/OFF pin : VIN connection ON/OFF logic : None
SENSE pin : VIN connection Release delay time : No delay (60 μs)
Table 20
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.5 V ± 1.0% 2.5 V ± 1.0% S-1701X1525-M5T1x −
1.8 V ± 1.0% 2.5 V ± 1.0% S-1701X1825-M5T1x −
2.2 V ± 1.0% 1.9 V ± 1.0% S-1701X2219-M5T1x −
3.0 V ± 1.0% 2.5 V ± 1.0% S-1701X3025-M5T1x −
3.2 V ± 1.0% 2.8 V ± 1.0% S-1701X3228-M5T1x S-1701X3228-U5T1x
3.3 V ± 1.0% 1.5 V ± 1.0% S-1701X3315-M5T1x −
3.3 V ± 1.0% 3.0 V ± 1.0% − S-1701X3330-U5T1x
3.3 V ± 1.0% 4.2 V ± 1.0% − S-1701X3342-U5T1x
Remark 1. Please contact our sales office for products with an output voltage or detection voltage other than those
specified above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
16
4. 20 S-1701 Series Y type
ON/OFF pin : VIN connection ON/OFF logic : None
SENSE pin : VIN connection Release delay time : 50 ms
Table 21
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
3.2 V ± 1.0% 2.8 V ± 1.0% S-1701Y3228-M5T1x S-1701Y3228-U5T1x
3.3 V ± 1.0% 3.0 V ± 1.0% − S-1701Y3330-U5T1x
3.3 V ± 1.0% 4.0 V ± 1.0% − S-1701Y3340-U5T1x
3.3 V ± 1.0% 4.2 V ± 1.0% S-1701Y3342-M5T1x S-1701Y3342-U5T1x
4. 21 S-1701 Series Z type
ON/OFF pin : VIN connection ON/OFF logic : None
SENSE pin : VIN connection Release delay time : 100 ms
Table 22
Output Voltage Detection Voltage SOT-23-5 SOT-89-5
1.6 V ± 1.0% 2.6 V ± 1.0% S-1701Z1626-M5T1x −
1.8 V ± 1.0% 2.6 V ± 1.0% S-1701Z1826-M5T1x −
3.2 V ± 1.0% 2.8 V ± 1.0% S-1701Z3228-M5T1x S-1701Z3228-U5T1x
3.3 V ± 1.0% 3.0 V ± 1.0% S-1701Z3330-M5T1x −
Remark 1. Please contact our sales office for products with an output voltage or detection voltage other than those
specified above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 17
Pin Configurations
Table 23
Pin No. Symbol Description
1 VIN Input voltage pin
2 VSS GND pin
3 ON/OFF
Shutdown pin
(A, B, C, D, E, F, G, H, J, K, L, M types)
3 SENSE
Detector SENSE pin
(N, P, Q, R, S, T types)
3 NC*1 No connection
(U, V, W, X, Y, Z types)
5 4
1 3 2
SOT-23-5
Top view
4 VDOUT
Detector output voltage pin*2
5 VOUT Regulator output voltage pin
Figure 7
*1. The NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
*2. Due to Nch open drain produ cts, please use the pull-up resistor.
Table 24
Pin No. Symbol Description
1 VIN Input voltage pin
2 VSS GND pin
3 VOUT Regulator output voltage pin
4 VDOUT
Detector output voltage pin*2
5 ON/OFF
Shutdown pin
(A, B, C, D, E, F, G, H, J, K, L, M types)
5 SENSE
Detector SENSE pin
(N, P, Q, R, S, T types)
5 4
1 3 2
SOT-89-5
Top view
5 NC*1 No connection
(U, V, W, X, Y, Z types)
Figure 8 *1. T he NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
*2. Due to Nch open drain produ cts, please use the pull-up resistor.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
18
Absolute Maximum Ratings
Table 25
(Ta = 25°C unless otherwise specified)
Item Symbol Absolute Maximum Rating Unit
VIN V
SS − 0.3 to VSS + 7 V
VON/OFF V
SS − 0.3 to VIN + 0.3 V
Input voltage VSENSE V
SS − 0.3 to VSS + 7 V
Regulator output voltage VOUT V
SS − 0.3 to VIN + 0.3 V
Detector output voltage VSS − 0.3 to VSS + 7 V
R,S,T type
VDOUT VSS − 0.3 to VIN + 0.3 V
300 (When not mounted on b oard) mW
SOT-23-5 600*1 mW
500 (When not mounted on b oard) mW
Power
dissipation SOT-89-5 PD
1000*1 mW
Operating ambient temperature Topr −40 to +85 °C
Storage temperature Tstg −40 to +125 °C
*1. When mounted on board
[Mounted board]
(1) Board size : 114.3 mm × 76.2 mm × t1.6 mm
(2) Board name : JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
(1) When mounted on board
(2) When not mounted on board
0
50 100
150
1200
800
400
0
Power dissipation (P
D
) [mW]
SOT-89-5
Ambient temperature (Ta) [°C]
1000
600
200
SOT-23-5
050 100
150
1200
800
400
0
Power dissipation (P
D
) [mW]
SOT-89-5
Ambient temperature (Ta) [°C]
1000
600
200 SOT-23-5
Figure 9 Power Dissipation of Packag e
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 19
Electrical Characteristics
1. S-1701 Series A/B/C/G/H/J ty pes
Table 26 (1 / 2)
(Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Current consumption ISS V
IN = VOUT(S) + 1.0 V, no load − 85 110 μA 3
Regulator block
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Output voltage*1 VOUT(E) V
IN = VOUT(S) + 1.0 V, IOUT = 30 mA VOUT(S)
× 0.99 VOUT(S) VOUT(S)
× 1.01 V 1
Output current*2 IOUT VIN ≥ VOUT(S) + 2.0 V
When VOUT(S) = 4.5 V or higher,
VIN = 6.5 V 400*7 − − mA 2
1.5 V ≤ VOUT(S) ≤ 1.6 V 0.50 0.54 0.58 V 1
1.7 V ≤ VOUT(S) ≤ 1.8 V − 0.34 0.38 V 1
1.9 V ≤ VOUT(S) ≤ 2.3 V − 0.19 0.29 V 1
2.4 V ≤ VOUT(S) ≤ 2.7 V − 0.16 0.25 V 1
Dropout voltage*3 Vdrop I
OUT = 100 mA
2.8 V ≤ VOUT(S) ≤ 5.0 V − 0.14 0.21 V 1
Line regulation
Δ
V
OUT1
Δ
V
IN
•
V
OUT
VOUT(S) + 0.5 V ≤ VIN ≤ 6.5 V,
IOUT = 30 mA − 0.05 0.2 %/V 1
Load regulation ΔVOUT2 VIN = VOUT(S) + 1.0 V,
1.0 mA ≤ IOUT ≤ 100 mA − 20 40 mV 1
Output voltage
temperature coefficient*4
Δ
V
OUT
Δ
Ta
•
V
OUT
VIN = VOUT(S) + 1.0 V, IOUT = 30 mA
−40°C ≤ Ta ≤ +85°C*8 − ±100 ±350 ppm/°C1
Current consumption
during operation ISSR VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON,
no load − 80 103 μA 3
Input voltage VIN − 2 − 6.5 V −
ON/OFF pin
input voltage “H” VSH V
IN = VOUT(S) + 1.0 V, RL = 1.0 kΩ 1.5 − − V 4
ON/OFF pin
input voltage “L” VSL V
IN = VOUT(S) + 1.0 V, RL = 1.0 kΩ − − 0.3 V 4
ON/OFF pin
input current “H” ISH V
IN = 6.5 V, VON/OFF = 6.5 V −0.1 − 0.1 μA 4
ON/OFF pin
input current “L” ISL V
IN = 6.5 V, VON/OFF = 0 V −0.1 − 0.1 μA 4
Ripple rejection RR VIN = VOUT(S) + 1.0 V, f = 1.0 kHz,
ΔVrip = 0.5 Vrms, IOUT = 30 mA − 70 − dB 5
Short-circuit current Ishort VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON,
VOUT = 0 V − 160 − mA 2
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
20
Table 26 (2 / 2)
Detector block (Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Detection voltage*5 −VDET − −VDET(S)
× 0.99 −VDET(S) −VDET(S)
× 1.01 V 6
Hysteresis width VHYS − 3 5 7 % 6
VIN = 1.4 V
(1.5 V ≤ −VDET(S) ≤ 5.5 V) 1.0 3.0 − mA 7
VIN = 2.0 V
(2.1 V ≤ −VDET(S) ≤ 5.5 V) 2.0 4.5 − mA 7
VIN = 3.0 V
(3.1 V ≤ −VDET(S) ≤ 5.5 V) 3.0 5.5 − mA 7
VIN = 4.0 V
(4.1 V ≤ −VDET(S) ≤ 5.5 V) 4.0 6.0 − mA 7
Output current IDOUT Nch,
VDOUT = 0.5 V
VIN = 5.0 V
(5.1 V ≤ −VDET(S) ≤ 5.5 V) 5.0 6.5 − mA 7
Detection voltage
temperature coefficient*6
Δ−
V
DET
Δ
Ta
•−
V
DET
−40°C ≤ Ta ≤ +85°C*8 − ±140 ±550 ppm/°C6
No delay (tD = 60 μs) − 60 100 μs 6
tD = 50 ms tD × 0.65 tD t
D × 1.35 ms 6
Delay time tD
tD = 100 ms tD × 0.65 tD t
D × 1.35 ms 6
Current consumption
during operation ISSD VIN = VOUT(S) + 1.0 V, ON/OFF pin = OFF,
no load − 5 7 μA 8
Input voltage VIN − 0.8 − 6.5 V −
Current leakage of
output transistor ILEAK V
IN = 6.5 V, VDOUT = 6.5 V − − 0.1 μA 7
*1. V
OUT(S): Specified output voltage
V
OUT(E): Actual output voltage at the fixed load
The output voltage when fixing IOUT (= 30 mA) and inputting VOUT(S) + 1.0 V
*2. The output current at which the output voltage becomes lower than 95 % of VOUT(E) after gradually increasing the output
current.
*3. V
drop = VIN1 − (VOUT3 × 0.98)
VOUT3 is the output voltage when VIN = VOUT(S) + 1.0 V and IOUT = 100 mA.
VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input voltag e.
*4. The change in temperature [mV/°C] of the regulator outp ut voltag e is calculated using the follo wing equ ation.
ΔVOUT
ΔTa []
mV/°C *1 = VOUT(S)[]
V*2 × ΔVOUT
ΔTa•VOUT []
ppm/°C *3 ÷ 1000
*1. The change in temperature of the outp ut voltage
*2. Specified output voltage
*3. Output voltage temperature coefficient
*5. −VDET: Actual detection voltage, −VDET(S): Specified detection voltage
*6. The change in temperature [mV/°C] of the detector detection voltage is calculated using the following equation.
Δ − VDET
ΔTa []
mV/°C *1 = −VDET(S) (typ.)[]
V*2 × Δ − VDET
ΔTa• −VDET []
ppm/°C *3 ÷ 1000
*1. The change in temperature of the detection voltage
*2. Specified detection voltage
*3. Detection voltage temperature coefficient
*7. The output current can be at least this value.
Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the
power dissipation of the package when the output current is large. This specification is guaranteed by design.
*8. Since products are not screened at high and low temperatures, the specification for this temperature range is
guaranteed by design, not tested in production.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 21
2. S-1701 Series D/E/F/K/L/M types
Table 27 (1 / 2)
(Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Current consumption ISS V
IN = VOUT(S) + 1.0 V, no load − 85 110 μA 3
Regulator block
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Output voltage*1 VOUT(E) V
IN = VOUT(S) + 1.0 V, IOUT = 30 mA VOUT(S)
× 0.99 VOUT(S) VOUT(S)
× 1.01 V 1
Output current*2 IOUT VIN ≥ VOUT(S) + 2.0 V
When VOUT(S) = 4.5 V or higher,
VIN = 6.5 V 400*7 − − mA 2
1.5 V ≤ VOUT(S) ≤ 1.6 V 0.50 0.54 0.58 V 1
1.7 V ≤ VOUT(S) ≤ 1.8 V − 0.34 0.38 V 1
1.9 V ≤ VOUT(S) ≤ 2.3 V − 0.19 0.29 V 1
2.4 V ≤ VOUT(S) ≤ 2.7 V − 0.16 0.25 V 1
Dropout voltage*3 Vdrop I
OUT = 100 mA
2.8 V ≤ VOUT(S) ≤ 5.0 V − 0.14 0.21 V 1
Line regulation
Δ
V
OUT1
Δ
V
IN
•
V
OUT
VOUT(S) + 0.5 V ≤ VIN ≤ 6.5 V,
IOUT = 30 mA − 0.05 0.2 %/V 1
Load regulation ΔVOUT2 VIN = VOUT(S) + 1.0 V,
1.0 mA ≤ IOUT ≤ 100 mA − 20 40 mV 1
Output voltage
temperature coefficient*4
Δ
V
OUT
Δ
Ta
•
V
OUT
VIN = VOUT(S) + 1.0 V, IOUT = 30 mA
−40°C ≤ Ta ≤ +85°C*8 − ±100 ±350 ppm/°C1
Current consumption
during operation ISSR VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON,
no load − 80 103 μA 3
Input voltage VIN − 2 − 6.5 V −
ON/OFF pin
input voltage “H” VSH V
IN = VOUT(S) + 1.0 V, RL = 1.0 kΩ 1.5 − − V 4
ON/OFF pin
input voltage “L” VSL V
IN = VOUT(S) + 1.0 V, RL = 1.0 kΩ − − 0.3 V 4
ON/OFF pin
input current “H” ISH V
IN = 6.5 V, VON/OFF = 6.5 V −0.1 − 0.1 μA 4
ON/OFF pin
input current “L” ISL V
IN = 6.5 V, VON/OFF = 0 V −0.1 − 0.1 μA 4
Ripple rejection RR VIN = VOUT(S) + 1.0 V, f = 1.0 kHz,
ΔVrip = 0.5 Vrms, IOUT = 30 mA − 70 − dB 5
Short-circuit current Ishort VIN = VOUT(S) + 1.0 V,
ON/OFF pin = ON, VOUT = 0 V − 160 − mA 2
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
22
Table 27 (2 / 2)
Detector block (Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Detection voltage*5 −VDET − −VDET(S)
× 0.99 −VDET(S) −VDET(S)
× 1.01 V 9
Hysteresis width VHYS − 3 5 7 % 9
VIN = 1.4 V
(1.5 V ≤ −VDET(S) ≤ 5.5 V) 1.0 3.0 − mA 7
VIN = 2.0 V
(2.1 V ≤ −VDET(S) ≤ 5.5 V) 2.0 4.5 − mA 7
VIN = 3.0 V
(3.1 V ≤ −VDET(S) ≤ 5.5 V) 3.0 5.5 − mA 7
VIN = 4.0 V
(4.1 V ≤ −VDET(S) ≤ 5.5 V) 4.0 6.0 − mA 7
Output current IDOUT Nch,
VDOUT = 0.5 V
VIN = 5.0 V
(5.1 V ≤ −VDET(S) ≤ 5.5 V) 5.0 6.5 − mA 7
Detection voltage
temperature coefficient*6
Δ−
V
DET
Δ
Ta
•−
V
DET
−40°C ≤ Ta ≤ +85°C*8 − ±140 ±550 ppm/°C9
No delay (tD = 60 μs) − 60 100 μs 9
tD = 50 ms tD × 0.65 tD t
D × 1.35 ms 9
Delay time tD
tD = 100 ms tD × 0.65 tD t
D × 1.35 ms 9
Current consumption
during operation ISSD VIN = VOUT(S) + 1.0 V, ON/OFF pin = OFF,
no load − 5 7 μA 8
Input voltage VIN − 0.8 − 6.5 V −
Current leakage of
output transistor ILEAK V
IN = 6.5 V, VDOUT = 6.5 V − − 0.1 μA 7
*1. V
OUT(S): Specified output voltage
V
OUT(E): Actual output voltage at the fixed load
The output voltage when fixing IOUT (= 30 mA) and inputting VOUT(S) + 1.0 V
*2. The output current at which the output voltage becomes lower than 95 % of VOUT(E) after gradually increasing the output
current.
*3. V
drop = VIN1 − (VOUT3 × 0.98)
VOUT3 is the output voltage when VIN = VOUT(S) + 1.0 V and IOUT = 100 mA.
VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input voltag e.
*4. The change in temperature [mV/°C] of the regulator outp ut voltag e is calculated using the follo wing equ ation.
ΔVOUT
ΔTa []
mV/°C *1 = VOUT(S)[]
V*2 × ΔVOUT
ΔTa•VOUT []
ppm/°C *3 ÷ 1000
*1. The change in temperature of the outp ut voltage
*2. Specified output voltage
*3. Output voltage temperature coefficient
*5. −VDET: Actual detection voltage, −VDET(S): Specified detection voltage
*6. The change in temperature [mV/°C] of the detector detection voltage is calculated using the following equation.
Δ − VDET
ΔTa []
mV/°C *1 = −VDET(S) (typ.)[]
V*2 × Δ − VDET
ΔTa• −VDET []
ppm/°C *3 ÷ 1000
*1. The change in temperature of the detection voltage
*2. Specified detection voltage
*3. Detection voltage temperature coefficient
*7. The output current can be at least this value.
Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the
power dissipation of the package when the output current is large. This specification is guaranteed by design.
*8. Since products are not screened at high and low temperatures, the specification for this temperature range is
guaranteed by design, not tested in production.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 23
3. S-1701 Series N/P/Q types
Table 28 (1 / 2)
(Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Current consumption ISS V
IN = VOUT(S) + 1.0 V, no load − 85 110 μA 12
Regulator block
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Output voltage*1 VOUT(E) V
IN = VOUT(S) + 1.0 V, IOUT = 30 mA VOUT(S)
× 0.99 VOUT(S) VOUT(S)
× 1.01 V 10
Output current*2 IOUT VIN ≥ VOUT(S) + 2.0 V
When VOUT(S) = 4.5 V or higher,
VIN = 6.5 V 400*7 − − mA 11
1.5 V ≤ VOUT(S) ≤ 1.6 V 0.50 0.54 0.58 V 10
1.7 V ≤ VOUT(S) ≤ 1.8 V − 0.34 0.38
V 10
1.9 V ≤ VOUT(S) ≤ 2.3 V − 0.19 0.29
V 10
2.4 V ≤ VOUT(S) ≤ 2.7 V − 0.16 0.25
V 10
Dropout voltage*3 Vdrop I
OUT = 100 mA
2.8 V ≤ VOUT(S) ≤ 5.0 V − 0.14 0.21
V 10
Line regulation
Δ
V
OUT1
Δ
V
IN
•
V
OUT
VOUT(S) + 0.5 V ≤ VIN ≤ 6.5 V,
IOUT = 30 mA − 0.05 0.2 %/V 10
Load regulation ΔVOUT2 VIN = VOUT(S) + 1.0 V,
1.0 mA ≤ IOUT ≤ 100 mA − 20 40 mV 10
Output voltage
temperature coefficient*4
Δ
V
OUT
Δ
Ta
•
V
OUT
VIN = VOUT(S) + 1.0 V, IOUT = 30 mA
−40°C ≤ Ta ≤ +85°C*8 − ±100 ±350 ppm/°C 10
Input voltage VIN − 2 − 6.5 V −
Ripple rejection RR VIN = VOUT(S) + 1.0 V, f = 1.0 kHz,
ΔVrip = 0.5 Vrms, IOUT = 30 mA − 70 − dB 13
Short-circuit current Ishort V
IN = VOUT(S) + 1.0 V, VOUT = 0 V − 160 − mA 11
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
24
Table 28 (2 / 2)
Detector block (Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Detection voltage*5 −VDET − −VDET(S)
× 0.99 −VDET(S) −VDET(S)
× 1.01 V 14
Hysteresis width VHYS − 3 5 7 % 14
VIN = 1.4 V
(1.5 V ≤ −VDET(S) ≤ 5.5 V) 1.0 3.0 − mA 15
VIN = 2.0 V
(2.1 V ≤ −VDET(S) ≤ 5.5 V) 2.0 4.5 − mA 15
VIN = 3.0 V
(3.1 V ≤ −VDET(S) ≤ 5.5 V) 3.0 5.5 − mA 15
VIN = 4.0 V
(4.1 V ≤ −VDET(S) ≤ 5.5 V) 4.0 6.0 − mA 15
Output current IDOUT Nch,
VDOUT = 0.5 V
VIN = 5.0 V
(5.1 V ≤ −VDET(S) ≤ 5.5 V) 5.0 6.5 − mA 15
Detection voltage
temperature coefficient*6
Δ−
V
DET
Δ
Ta
•−
V
DET
−40°C ≤ Ta ≤ +85°C*8 − ±140 ±550 ppm/°C 14
No delay (tD = 60 μs) − 60 100 μs 14
tD = 50 ms tD × 0.65 tD t
D × 1.35 ms 14
Delay time tD
tD = 100 ms tD × 0.65 tD t
D × 1.35 ms 14
Input voltage VIN − 0.8 − 6.5 V −
Current leakage of
output transistor ILEAK V
IN = 6.5 V, VDOUT = 6.5 V − − 0.1 μA 15
*1. V
OUT(S): Specified output voltage
V
OUT(E): Actual output voltage at the fixed load
The output voltage when fixing IOUT (= 30 mA) and inputting VOUT(S) + 1.0 V
*2. The output current at which the output voltage becomes lower than 95 % of VOUT(E) after gradually increasing the output
current.
*3. V
drop = VIN1 − (VOUT3 × 0.98)
VOUT3 is the output voltage when VIN = VOUT(S) + 1.0 V and IOUT = 100 mA.
VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input voltag e.
*4. The change in temperature [mV/°C] of the regulator outp ut voltag e is calculated using the follo wing equ ation.
ΔVOUT
ΔTa []
mV/°C *1 = VOUT(S)[]
V*2 × ΔVOUT
ΔTa•VOUT []
ppm/°C *3 ÷ 1000
*1. The change in temperature of the outp ut voltage
*2. Specified output voltage
*3. Output voltage temperature coefficient
*5. −VDET: Actual detection voltage, −VDET(S): Specified detection voltage
*6. The change in temperature [mV/°C] of the detector detection voltage is calculated using the following equation.
Δ − VDET
ΔTa []
mV/°C *1 = −VDET(S) (typ.)[]
V*2 × Δ − VDET
ΔTa• −VDET []
ppm/°C *3 ÷ 1000
*1. The change in temperature of the detection voltage
*2. Specified detection voltage
*3. Detection voltage temperature coefficient
*7. The output current can be at least this value.
Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the
power dissipation of the package when the output current is large. This specification is guaranteed by design.
*8. Since products are not screened at high and low temperatures, the specification for this temperature range is
guaranteed by design, not tested in production.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 25
4. S-1701 Series R/S/T types
Table 29 (1 / 2)
(Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Current consumption ISS V
IN = VOUT(S) + 1.0 V, no load − 85 110 μA 12
Regulator block
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Output voltage*1 VOUT(E) V
IN = VOUT(S) + 1.0 V, IOUT = 30 mA VOUT(S)
× 0.99 VOUT(S) VOUT(S)
× 1.01 V 10
Output current*2 IOUT VIN ≥ VOUT(S) + 2.0 V
When VOUT(S) = 4.5 V or higher,
VIN = 6.5 V 400*7 − − mA 11
1.5 V ≤ VOUT(S) ≤ 1.6 V 0.50 0.54 0.58 V 10
1.7 V ≤ VOUT(S) ≤ 1.8 V − 0.34 0.38
V 10
1.9 V ≤ VOUT(S) ≤ 2.3 V − 0.19 0.29
V 10
2.4 V ≤ VOUT(S) ≤ 2.7 V − 0.16 0.25
V 10
Dropout voltage*3 Vdrop I
OUT = 100 mA
2.8 V ≤ VOUT(S) ≤ 5.0 V − 0.14 0.21
V 10
Line regulation
Δ
V
OUT1
Δ
V
IN
•
V
OUT
VOUT(S) + 0.5 V ≤ VIN ≤ 6.5 V,
IOUT = 30 mA − 0.05 0.2 %/V 10
Load regulation ΔVOUT2 VIN = VOUT(S) + 1.0 V,
1.0 mA ≤ IOUT ≤ 100 mA − 20 40 mV 10
Output voltage
temperature coefficient*4
Δ
V
OUT
Δ
Ta
•
V
OUT
VIN = VOUT(S) + 1.0 V, IOUT = 30 mA
−40°C ≤ Ta ≤ +85°C*8 − ±100 ±350 ppm/°C 10
Input voltage VIN − 2 − 6.5 V −
Ripple rejection RR VIN = VOUT(S) + 1.0 V, f = 1.0 kHz,
ΔVrip = 0.5 Vrms, IOUT = 30 mA − 70 − dB 13
Short-circuit current Ishort V
IN = VOUT(S) + 1.0 V, VOUT = 0 V − 160 − mA 11
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
26
Table 29 (2 / 2)
Detector block (Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Detection voltage*5 −VDET − −VDET(S)
× 0.99 −VDET(S) −VDET(S)
× 1.01 V 14
Hysteresis width VHYS − 3 5 7 % 14
VIN = 1.4 V
(1.5 V ≤ −VDET(S) ≤ 5.5 V) 1.0 3.0 − mA 15
VIN = 2.0 V
(2.1 V ≤ −VDET(S) ≤ 5.5 V) 2.0 4.5 − mA 15
VIN = 3.0 V
(3.1 V ≤ −VDET(S) ≤ 5.5 V) 3.0 5.5 − mA 15
VIN = 4.0 V
(4.1 V ≤ −VDET(S) ≤ 5.5 V) 4.0 6.0 − mA 15
Output current IDOUT Nch,
VDOUT = 0.5 V
VIN = 5.0 V
(5.1 V ≤ −VDET(S) ≤ 5.5 V) 5.0 6.5 − mA 15
Detection voltage
temperature coefficient*6
Δ−
V
DET
Δ
Ta
•−
V
DET
−40°C ≤ Ta ≤ +85°C*8 − ±140 ±550 ppm/°C 14
No delay (tD = 60 μs) − 60 100 μs 14
tD = 50 ms tD × 0.65 tD t
D × 1.35 ms 14
Delay time tD
tD = 100 ms tD × 0.65 tD t
D × 1.35 ms 14
Input voltage VIN − 0.8 − 6.5 V −
Current leakage of
output transistor ILEAK V
IN = 6.5 V, VDOUT = 6.5 V − − 0.1 μA 15
*1. V
OUT(S): Specified output voltage
V
OUT(E): Actual output voltage at the fixed load
The output voltage when fixing IOUT (= 30 mA) and inputting VOUT(S) + 1.0 V
*2. The output current at which the output voltage becomes lower than 95 % of VOUT(E) after gradually increasing the output
current.
*3. V
drop = VIN1 − (VOUT3 × 0.98)
VOUT3 is the output voltage when VIN = VOUT(S) + 1.0 V and IOUT = 100 mA.
VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input voltag e.
*4. The change in temperature [mV/°C] of the regulator outp ut voltag e is calculated using the follo wing equ ation.
ΔVOUT
ΔTa []
mV/°C *1 = VOUT(S)[]
V*2 × ΔVOUT
ΔTa•VOUT []
ppm/°C *3 ÷ 1000
*1. The change in temperature of the outp ut voltage
*2. Specified output voltage
*3. Output voltage temperature coefficient
*5. −VDET: Actual detection voltage, −VDET(S): Specified detection voltage
*6. The change in temperature [mV/°C] of the detector detection voltage is calculated using the following equation.
Δ − VDET
ΔTa []
mV/°C *1 = −VDET(S) (typ.)[]
V*2 × Δ − VDET
ΔTa• −VDET []
ppm/°C *3 ÷ 1000
*1. The change in temperature of the detection voltage
*2. Specified detection voltage
*3. Detection voltage temperature coefficient
*7. The output current can be at least this value.
Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the
power dissipation of the package when the output current is large. This specification is guaranteed by design.
*8. Since products are not screened at high and low temperatures, the specification for this temperature range is
guaranteed by design, not tested in production.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 27
5. S-1701 Series U/V/W types
Table 30 (1 / 2)
(Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Current consumption ISS V
IN = VOUT(S) + 1.0 V, no load − 85 110 μA 12
Regulator block
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circu
it
Output voltage*1 VOUT(E) V
IN = VOUT(S) + 1.0 V, IOUT = 30 mA VOUT(S)
× 0.99 VOUT(S) VOUT(S)
× 1.01 V 10
Output current*2 IOUT VIN ≥ VOUT(S) + 2.0 V
When VOUT(S) = 4.5 V or higher,
VIN = 6.5 V 400*7 − − mA 11
1.5 V ≤ VOUT(S) ≤ 1.6 V 0.50 0.54 0.58 V 10
1.7 V ≤ VOUT(S) ≤ 1.8 V − 0.34 0.38 V 10
1.9 V ≤ VOUT(S) ≤ 2.3 V − 0.19 0.29 V 10
2.4 V ≤ VOUT(S) ≤ 2.7 V − 0.16 0.25 V 10
Dropout voltage*3 Vdrop I
OUT = 100 mA
2.8 V ≤ VOUT(S) ≤ 5.0 V − 0.14 0.21 V 10
Line regulation
Δ
V
OUT1
Δ
V
IN
•
V
OUT
VOUT(S) + 0.5 V ≤ VIN ≤ 6.5 V,
IOUT = 30 mA − 0.05 0.2 %/V 10
Load regulation ΔVOUT2 VIN = VOUT(S) + 1.0 V,
1.0 mA ≤ IOUT ≤ 100 mA − 20 40 mV 10
Output voltage
temperature coefficient*4
Δ
V
OUT
Δ
Ta
•
V
OUT
VIN = VOUT(S) + 1.0 V, IOUT = 30 mA
−40°C ≤ Ta ≤ +85°C*8 − ±100 ±350 ppm/°C 10
Input voltage VIN − 2 − 6.5 V −
Ripple rejection RR VIN = VOUT(S) + 1.0 V, f = 1.0 kHz,
ΔVrip = 0.5 Vrms, IOUT = 30 mA − 70 − dB 13
Short-circuit current Ishort V
IN = VOUT(S) + 1.0 V, VOUT = 0 V − 160 − mA 11
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
28
Table 30 (2 / 2)
Detector block (Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Detection voltage*5 −VDET − −VDET(S)
× 0.99 −VDET(S) −VDET(S)
× 1.01 V 16
Hysteresis width VHYS − 3 5 7 % 16
VIN = 1.4 V
(1.5 V ≤ −VDET(S) ≤ 5.5 V) 1.0 3.0 − mA 15
VIN = 2.0 V
(2.1 V ≤ −VDET(S) ≤ 5.5 V) 2.0 4.5 − mA 15
VIN = 3.0 V
(3.1 V ≤ −VDET(S) ≤ 5.5 V) 3.0 5.5 − mA 15
VIN = 4.0 V
(4.1 V ≤ −VDET(S) ≤ 5.5 V) 4.0 6.0 − mA 15
Output current IDOUT Nch,
VDOUT = 0.5 V
VIN = 5.0 V
(5.1 V ≤ −VDET(S) ≤ 5.5 V) 5.0 6.5 − mA 15
Detection voltage
temperature coefficient*6
Δ−
V
DET
Δ
Ta
•−
V
DET
−40°C ≤ Ta ≤ +85°C*8 − ±140 ±550 ppm/°C 16
No delay (tD = 60 μs) − 60 100 μs 16
tD = 50 ms tD × 0.65 tD t
D × 1.35 ms 16
Delay time tD
tD = 100 ms tD × 0.65 tD t
D × 1.35 ms 16
Input voltage VIN − 0.8 − 6.5 V −
Current leakage of
output transistor ILEAK V
IN = 6.5 V, VDOUT = 6.5 V − − 0.1 μA 15
*1. V
OUT(S): Specified output voltage
V
OUT(E): Actual output voltage at the fixed load
The output voltage when fixing IOUT (= 30 mA) and inputting VOUT(S) + 1.0 V
*2. The output current at which the output voltage becomes lower than 95 % of VOUT(E) after gradually increasing the output
current.
*3. V
drop = VIN1 − (VOUT3 × 0.98)
VOUT3 is the output voltage when VIN = VOUT(S) + 1.0 V and IOUT = 100 mA.
VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input voltag e.
*4. The change in temperature [mV/°C] of the regulator outp ut voltag e is calculated using the follo wing equ ation.
ΔVOUT
ΔTa []
mV/°C *1 = VOUT(S)[]
V*2 × ΔVOUT
ΔTa•VOUT []
ppm/°C *3 ÷ 1000
*1. The change in temperature of the outp ut voltage
*2. Specified output voltage
*3. Output voltage temperature coefficient
*5. −VDET: Actual detection voltage, −VDET(S): Specified detection voltage
*6. The change in temperature [mV/°C] of the detector detection voltage is calculated using the following equation.
Δ − VDET
ΔTa []
mV/°C *1 = −VDET(S) (typ.)[]
V*2 × Δ − VDET
ΔTa• −VDET []
ppm/°C *3 ÷ 1000
*1. The change in temperature of the detection voltage
*2. Specified detection voltage
*3. Detection voltage temperature coefficient
*7. The output current can be at least this value.
Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the
power dissipation of the package when the output current is large. This specification is guaranteed by design.
*8. Since products are not screened at high and low temperatures, the specification for this temperature range is
guaranteed by design, not tested in production.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 29
6. S-1701 Series X/Y/Z types
Table 31 (1 / 2)
(Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Current consumption ISS V
IN = VOUT(S) + 1.0 V, no load − 85 110 μA 12
Regulator block
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Output voltage*1 VOUT(E) V
IN = VOUT(S) + 1.0 V, IOUT = 30 mA VOUT(S)
× 0.99 VOUT(S) VOUT(S)
× 1.01 V 10
Output current*2 IOUT VIN ≥ VOUT(S) + 2.0 V
When VOUT(S) = 4.5 V or higher,
VIN = 6.5 V 400*7 − − mA 11
1.5 V ≤ VOUT(S) ≤ 1.6 V 0.50 0.54 0.58 V 10
1.7 V ≤ VOUT(S) ≤ 1.8 V − 0.34 0.38
V 10
1.9 V ≤ VOUT(S) ≤ 2.3 V − 0.19 0.29
V 10
2.4 V ≤ VOUT(S) ≤ 2.7 V − 0.16 0.25
V 10
Dropout voltage*3 Vdrop I
OUT = 100 mA
2.8 V ≤ VOUT(S) ≤ 5.0 V − 0.14 0.21
V 10
Line regulation
Δ
V
OUT1
Δ
V
IN
•
V
OUT
VOUT(S) + 0.5 V ≤ VIN ≤ 6.5 V,
IOUT = 30 mA − 0.05 0.2 %/V 10
Load regulation ΔVOUT2 VIN = VOUT(S) + 1.0 V,
1.0 mA ≤ IOUT ≤ 100 mA − 20 40 mV 10
Output voltage
temperature coefficient*4
Δ
V
OUT
Δ
Ta
•
V
OUT
VIN = VOUT(S) + 1.0 V, IOUT = 30 mA
−40°C ≤ Ta ≤ +85°C*8 − ±100 ±350 ppm/°C 10
Input voltage VIN − 2 − 6.5 V −
Ripple rejection RR VIN = VOUT(S) + 1.0 V, f = 1.0 kHz,
ΔVrip = 0.5 Vrms, IOUT = 30 mA − 70 − dB 13
Short-circuit current Ishort V
IN = VOUT(S) + 1.0 V, VOUT = 0 V − 160 − mA 11
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
30
Table 31 (2 / 2)
Detector block (Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Detection voltage*5 −VDET − −VDET(S)
× 0.99 −VDET(S) −VDET(S)
× 1.01 V 14
Hysteresis width VHYS − 3 5 7 % 14
VIN = 1.4 V
(1.5 V ≤ −VDET(S) ≤ 5.5 V) 1.0 3.0 − mA 15
VIN = 2.0 V
(2.1 V ≤ −VDET(S) ≤ 5.5 V) 2.0 4.5 − mA 15
VIN = 3.0 V
(3.1 V ≤ −VDET(S) ≤ 5.5 V) 3.0 5.5 − mA 15
VIN = 4.0 V
(4.1 V ≤ −VDET(S) ≤ 5.5 V) 4.0 6.0 − mA 15
Output current IDOUT Nch,
VDOUT = 0.5 V
VIN = 5.0 V
(5.1 V ≤ −VDET(S) ≤ 5.5 V) 5.0 6.5 − mA 15
Detection voltage
temperature coefficient*6
Δ−
V
DET
Δ
Ta
•−
V
DET
−40°C ≤ Ta ≤ +85°C*8 − ±140 ±550 ppm/°C 14
No delay (tD = 60 μs) − 60 100 μs 14
tD = 50 ms tD × 0.65 tD t
D × 1.35 ms 14
Delay time tD
tD = 100 ms tD × 0.65 tD t
D × 1.35 ms 14
Input voltage VIN − 0.8 − 6.5 V −
Current leakage of
output transistor ILEAK V
IN = 6.5 V, VDOUT = 6.5 V − − 0.1 μA 15
*1. V
OUT(S): Specified output voltage
V
OUT(E): Actual output voltage at the fixed load
The output voltage when fixing IOUT (= 30 mA) and inputting VOUT(S) + 1.0 V
*2. The output current at which the output voltage becomes lower than 95 % of VOUT(E) after gradually increasing the output
current.
*3. V
drop = VIN1 − (VOUT3 × 0.98)
VOUT3 is the output voltage when VIN = VOUT(S) + 1.0 V and IOUT = 100 mA.
VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input voltag e.
*4. The change in temperature [mV/°C] of the regulator outp ut voltag e is calculated using the follo wing equ ation.
ΔVOUT
ΔTa []
mV/°C *1 = VOUT(S)[]
V*2 × ΔVOUT
ΔTa•VOUT []
ppm/°C *3 ÷ 1000
*1. The change in temperature of the outp ut voltage
*2. Specified output voltage
*3. Output voltage temperature coefficient
*5. −VDET: Actual detection voltage, −VDET(S): Specified detection voltage
*6. The change in temperature [mV/°C] of the detector detection voltage is calculated using the following equation.
Δ − VDET
ΔTa []
mV/°C *1 = −VDET(S) (typ.)[]
V*2 × Δ − VDET
ΔTa• −VDET []
ppm/°C *3 ÷ 1000
*1. The change in temperature of the detection voltage
*2. Specified detection voltage
*3. Detection voltage temperature coefficient
*7. The output current can be at least this value.
Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the
power dissipation of the package when the output current is large. This specification is guaranteed by design.
*8. Since products are not screened at high and low temperatures, the specification for this temperature range is
guaranteed by design, not tested in production.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 31
Test Circuits
1.
ON/OFF
VDOUT
VOUT
VSS
VIN
V
+
A
+
Set to
power on
100 k
Ω
2.
ON/OFF
VDOUT
VOUT
VSS
V
+
A
+
Set to
power on
VIN
100 k
Ω
Figure 10 Figure 11
3.
ON/OFF
VDOUT
VOUT
VSS
A
+
Set to
power on
VIN
100 k
Ω
4.
ON/OFF
VDOUT
VOUT
VSS
V
+
A
+
VIN
100 k
Ω
R
L
Figure 12 Figure 13
5.
ON/OFF
VDOUT
VOUT
VSS
V
+
Set to
power on
VIN
100 k
Ω
R
L
6.
ON/OFF
VDOUT
VOUT
VSS
V
+
Set to
power off
VIN
100 k
Ω
Figure 14 Figure 15
7.
ON/OFF
VDOUT
VOUT
VSS
Set to
power off
A
+
VIN
8.
ON/OFF
VDOUT
VOUT
VSS
A
+
Set to
power off
VIN
100 k
Ω
Figure 16 Figure 17
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
32
9.
VIN
VOUT
VDOUT
VSS
V
+
Set to
power off
100 k
Ω
ON/OFF
10.
(SENSE)
VDOUT
VOUT
VSS
V
+
A
+
VIN
100 k
Ω
Figure 18 Figure 19
11.
(SENSE)
VDOUT
VOUT
VSS
V
+
A
+
VIN
100 k
Ω
12.
(SENSE)
VDOUT
VOUT
VSS
A
+
VIN
100 k
Ω
Figure 20 Figure 21
13.
(SENSE)
VDOUT
VOUT
VSS
V
+
VIN
100 k
Ω
R
L
14.
(SENSE)
VDOUT
VOUT
VSS
V
+
VIN
100 k
Ω
Figure 22 Figure 23
15.
(SENSE)
VDOUT
VOUT
VSS
A
+
VIN
16.
VIN
VOUT
VDOUT
VSS
V
+
100 k
Ω
Figure 24 Figure 25
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 33
Standard Circuit
1. S-1701 Series A/B/C/D/E/F/G/H/J/K/L/ M types
VSS
VDOUT
ON/OFF
VIN
CIN
*1
CL*2
Input VD output
GND
Single GND
VOUT VR output
*1. C
IN is a capacitor for stabilizing the input.
*2. A ceramic capacitor of 1.0 μF or more can be used for CL.
Figure 26
2. S-1701 Series N/P/Q/R/S/T/U/V/W/X/Y/Z types
VSS
VDOUT
(SENSE)
*3
VIN
CIN*1 CL*2
Input VD output
GND
Single GND
VOUT VR output
*1. C
IN is a capacitor for stabilizing the input.
*2. A ceramic capacitor of 1.0 μF or more can be used for CL.
*3. U/V/W/X/Y/Z types of S-1701 series are no connection.
Figure 27
Caution The above connection diagrams and constants will not guarantee successful operation. Perform
thorough evaluation using the actual application to set the constants.
Application Conditions
Input capacitor (CIN): 1.0 μF or more
Output capacitor (CL): 1.0 μF or more
ESR of output capacitor: 10 Ω or less
Caution A general series regulator may oscillate, depending on the external components selected. Check
that no oscillation occurs in an application that uses the above capacitor.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
34
Selection of Input and Output Capacitors (CIN, CL)
The S-1701 Series requires an output capacitor between the VOUT and VSS pins for phase compensation. A ceramic
capacitor with a capacitance of 1.0 μF or more provi des a stable operation in all temper ature ranges. W hen using an OS
capacitor, tantalum cap acitor, or alum inum electrol ytic c apacitor, a capac itor with a capacitance of 1.0 μF or more a nd an
ESR of 10 Ω or less is required.
The output overshoot and u ndershoot values, which are transient resp onse characteristics, var y depending on the output
capacitor value. The required capacitance value for the in put capacitor differs depending on the application.
The recommended application values are CIN = 1.0 μF or more and CL = 1.0 μF or more, however, perform thorough
evaluation using the actual device, including evaluation of temperature characteristics.
Explanation of Terms
Regulator block
1. Low dropout voltage regulator
The low dropout voltage regulator is a voltage regulator whose dropout voltage is low due to its built-in low on-
resistance transistor.
2. Low ESR
A capacitor whose ESR (Equivalent Series R esistance) is lo w. T he S-17 01 Series e nables use of a l o w ESR capacitor ,
such as a ceramic capacitor, for the output-side capacitor (CL). A capacitor whos e ESR is 10 Ω or less can be use d.
3. Output voltage (VOUT)
The accuracy of the output voltage is ensured at ±1.0% under the specified conditions of fixed input voltage*1, fixed
output current, and fixed temperature.
*1. Differs depending on the product.
Caution If the above conditions change, the output voltage value may vary and exceed the accuracy range of
the output voltage. Please see the electrical characteristics and attached characteristics data for
details.
4. Line regulation
⎝
⎛⎠
⎞
ΔVOUT1
ΔVIN•VOUT
Indicates the dependency of the output voltage on the input voltage. That is, the values show how much the output
voltage changes due to a change in the input voltage with the output curre nt remaining unchanged.
5. Load regulation (ΔVOUT2)
Indicates the dependency of the output voltage on the output current. That is, the values show how much the output
voltage changes due to a change in the output current with the input voltage remaining unchanged.
6. Dropout voltage (Vdrop)
Indicates the difference between the input voltage VIN1, which is the input voltage (VIN) at the point where the output
voltage has fallen to 98% of the output voltage value VOUT3 after VIN was gradually decreased from VIN = VOUT(S) + 1.0
V, and the output voltage at that point (VOUT3 × 0.98).
Vdrop = VIN1 − (VOUT3 × 0.98)
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 35
7. Temperature coefficient of the output voltage ⎝
⎛⎠
⎞
ΔVOUT
ΔTa•VOUT
The shaded area in Figure 28 is the range where VOUT varies in the operating temperature range when the
temperature coefficient of the output voltage is ±100 ppm/°C.
V
OUT(E)*1
Example of products with V
OUT
= 3.0 V typ.
−40 25
+0.30 mV/°C
V
OUT
[V]
*1. V
OUT(E)
is the value of the output voltage me asure d at 25°C.
85 Ta [°C]
−0.30 mV/°C
Figure 28
A change in the temperature of the output voltag e [mV/ °C] is calculated using the following eq uation.
ΔVOUT
ΔTa []
mV/°C *1 = VOUT(S)[]
V*2 × ΔVOUT
ΔTa•VOUT []
ppm/°C *3 ÷ 1000
*1. Change in temperature of output voltage
*2. Specified output voltage
*3. Output voltage temperature coefficient
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
36
Detector block
1. Detection voltage (−VDET), Release voltage (+VDET)
The detection voltage ( −VDET) is the voltage at which the output switches to low. The de tection voltage varies slightly
among products of the same specification. T he variation of detection voltage between the specified minimum ( −VDET)
Min. and the maximum (−VDET) Max. is called the detectio n voltag e range (refer to Figure 29).
e.g. F or a product with −VDET = 3.0 V, the detection voltage is a valu e in the range of 2.97 V ≤ (−VDET) ≤ 3.03 V.
This means that some products have 2.97 V for −VDET and some have 3.03 V.
The release voltage (+VDET) is the voltage at which the output switches to high. The release voltage varies slightly
among products of the same specification. The variation of release voltages between the specified minimum (+VDET)
Min. and the maximum (+VDET) Max. is called the release voltage range (ref er to Figure 30).
e.g. F or a product with −VDET = 3.0 V, the release voltage is a v alu e in the range of 3.059 V ≤ (+VDET) ≤ 3.242 V.
This means that some products have 3.059 V for +VDET and some have 3.242 V.
Detect ion
voltage
Detection
voltage range
V
IN
(−V
DET
) Min.
(−V
DET
) Max.
V
DOUT
Delay time
Release voltage
Release
voltage range
V
IN
(+V
DET
) Min.
(+V
DET
) Max.
V
DOUT
Figure 29 Detection Voltage Figure 30 Release Voltag e
Remark The above figures sho w the detection voltage and release voltage when the SENSE pin is connected to VIN.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 37
2. Hysteresis width (VHYS)
The hysteresis width is the voltage differ ence bet ween the detection v oltage and the rel ease voltag e. The existence of
the hysteresis width prevents malfunction caused by noise on the input voltage.
3. Delay time (tD)
The delay time is a time internally measured from the instant at which the voltage input to the VDD pin exceeds the
release voltage (+VDET) to the point at which the output of the OUT pin inverts.
S-1701 Series A/D/G/K/N/R/U/X types: No delay (60 μs typ.)
S-1701 Series B/E/H/L/P/S/V/Y types: 50 ms typ.
S-1701 Series C/F/J/M/Q/T/W/Z types: 100 ms typ.
t
D
V
IN
or
V
SENSE
V
DOUT
When t
D
= 60 μs
V
+V
DET
t
D
Remark The figure shows the case when the SENSE pin is conn ecte d to VIN.
When t
D
= 50 ms, 100 ms
Figure 31
4. Through-type current
The through-type current refers to the current that flows instantaneously when the voltage detector detects and
releases a voltage. The through-type current flows at a frequency of 20 kHz during the release delay time since the
internal logic circuit operates.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
38
5. Oscillation
In applications where a resisto r is connected to the input sid e (Figure 32), the through-type current which is generated
when the output goes from low to high (release) causes a voltage drop equal to [through-type current] × [input
resistance] across the resistor. When the input voltage drops below the detection voltage as a result, the output
voltage goes from high to lo w. In this state, the through-type current stops, its resultant v oltage drop disappears, and
the output goes from low to high. The through-type current is then generated again, a voltage drop appears, and
repeating the process finall y induces oscillation.
VDOUT
VSS
VIN
Rb
Ra
VIN
S-1701
detector
block
Figure 32 Example of Bad Implementation of Detectio n Voltage Changer
6. Other characteristics
6. 1 Temperature characteristics of detection voltage
The shaded area in Figure 33 is the range where −VDET varies within the operating tem perature range when the
temperature coefficient of the output voltage is ±140 ppm/°C.
−40
25
+0.42 mV/°C
−V
DET
[V]
3.000
85 Ta [°C]
−0.42 mV/°C
Example of products with −V
DET
= 3.0 V
Figure 33 Detection Voltage Temperature Characteristics
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 39
6. 2 Temperature characteristics of release voltage
The temperature change Δ+VDET
ΔTa of the release voltage is calcul ated by the temperature change Δ−VDET
ΔTa of the
detection voltage as follows:
Δ+VDET
ΔTa = +VDET
−VDET × Δ−VDET
ΔTa
The temperature changes of the release v oltage and the detection voltage consequently have the same sign.
6. 3 Temperature characteristics of hysteresis voltage
The temperature change of the hysteresis voltage is expressed as Δ+VDET
ΔTa − Δ−VDET
ΔTa and is calculated as
follows:
Δ+VDET
ΔTa − Δ − VDET
ΔTa = VHYS
−VDET × Δ − VDET
ΔTa
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
40
Operation
Regulator block
1. Basic operation
Figure 34 shows the block diagram of the regulator block.
The error amplifier compares the reference voltage (Vref) with Vfb, which is the output voltage resistance divided by
feedback resistors Rs and Rf. It supplies the output transistor with the gate voltage necessary to ensure a certain
output voltage free of any fluctuations of i nput voltage and temperature.
Output voltage is selectable from the range of 1.5 to 5.0 V in the S-1701 Se ries.
Vfb
Vref
VIN
VOUT
Rf
Rs
Current
supply
−
+
*1
Error amplifier
Reference voltage
circuit
*1. Parasitic diode
VSS
Figure 34 Block Diagram (Regulator Block)
2. Output transistor
The S-1701 Series uses a low on-resistance P-channel MOS FET as the output transistor .
Be sure that VOUT does not exceed VIN + 0.3 V to prevent the voltage regulator from being damaged due to inverse
current flowing from the VOUT pin through a paras itic diode to the VIN pin.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 41
3. Shutdown pin (ON/OFF pin) (S-1701 Series A/B/C/D/E/F/G/H/J/K/L/M types)
This pin starts and stops the regulator.
When the ON/OFF pin is set to the shutdo wn level, the operatio n of all internal c ircuits stop, and the bu ilt-in P-channel
MOS FET output transistor between the VIN pin and VOUT pin is turned off to substantially reduce the current
consumption. At this time, the current consumption equals that consumed by the detector block, because the internal
circuits of the detector are operating. The VOUT pin becomes the VSS level due to the internally divided resistance of
several hundred kΩ bet ween the VOUT pin and VSS pin.
The structure of the ON/OFF pin is as shown in Figure 35. Since the ON/OFF pin is neit her pulled do wn nor pu lled up
internally, do not use it in the floating state. In additi on, note that the current consumption increas es if a voltage of 0.3
V to VIN − 0.3 V is applied to the ON/OFF pin. When the ON/OFF pin is not used, connect it as follows according to the
product type.
S-1701 Series A/B/C/D/E/F types: Connect to the VIN pin.
S-1701 Series G/H/J/K/L/M types: Connect to the VSS pin.
Table 32
Product Type ON/OFF Pin Internal Circuits VOUT Pin Voltage Current Consumption
A/B/C/D/E/F “H”: Power on Operating Set value ISS
A/B/C/D/E/F “L”: Shutdown Stopped VSS level ISSD
G/H/J/K/L/M “H”: Shutdown Stopped VSS level ISSD
G/H/J/K/L/M “L”: Power on Operating Set value ISS
VSS
ON/OFF
VIN
Figure 35
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
42
Detector block
1. Basic operation
Figure 36 shows a block diagram of the detector block.
Ra
Rb
Rc
*1
*1. Parasitic diode
VSS
Current
supply
+
−
VIN VSENSE
Vref
N1
VDOU
T
Nch
Delay circuit
Figure 36 Block Diagram (Detector Block)
(1) When the SENSE voltage (VSENSE) is higher than the release voltage (+VDET), the Nch transistor is OFF and VIN
(high) is output. Since the Nch transistor N1 in Figure 36 is OFF, the comparator input voltage is
(Rb+Rc) • VSENSE
Ra+Rb+Rc.
(2) When VSENSE goes below +VDET, VIN is output, as long as VSENSE remains above the detection voltage (−VDET).
When the VSENSE falls below −VDET, the Nch transistor becomes ON and VSS is output. At this time, the Nch
transistor N1 in Figure 36 becomes ON, and the comparator input voltage i s changed to Rb • VSENSE
Ra+Rb.
(3) When VIN falls below the minimum operating voltage, the output becomes undefined. In this case the output
becomes VIN because it is pulled up.
(4) VSS is output when VIN rises above t he minimum operating voltage. T he VSS level still a ppears even when V SENSE
surpasses −VDET, as long as it does not exceed the release voltage +VDET. When VSENSE rises above +VDET, the
Nch transistor becomes OFF and VIN is output. VIN at the VDOUT pin is delayed for tD due to the delay circuit.
(5) In the S-1701 Series, the detection voltage can be set within the ran ge of 1.5 V to 5.5 V (operating v oltage range:
0.8 V to 6.5 V).
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 43
A BV
DD
t
D
V
SS
Minimum operating voltage
Output from VDOUT pin
V
IN
(V
SENSE
)
V
SS
(1) (2) (3) (5) (4)
Hysteresis width (V
HYS
)Release vol tag e ( +V
DET
)
Detection voltage (−V
DET
)
Remark The above figure shows the case when the SENSE pin is connected to VIN.
Figure 37 Operation
2. Delay circuit
The delay circu it delays t he ou tput signal from the time when the SENSE voltage (V SENSE) exceeds the release voltage
(+VDET) when VSENSE is turned on (refer to point B in Figure 37). The output signal is not de layed when VSENSE goes
below the detection voltage (−VDET) (refer to point A in Figure 37).
The delay time (tD) is a fixed value that is determined by a counter and a built-in clock generator which consists of
constant current and a capacitor.
3. Delay circuit output voltage detection type (S-1701 Series D/E/F/K/L/M/U/V/W types)
If the input voltage or load current changes transi ently, an undershoot or overshoot occurs in the output voltage of th e
regulator. In the product types in which the output voltage of the regulator is detected by the detector, if the output
voltage is the detection voltage or lower due to the undershoot, the detector operates and a reset signal may be
output. To prevent this, set the value of the input-and-output capacitor of a regulator so that the undershoot is the
minimum value or set a voltage range that allows the difference between the output voltage an d detection voltage to be
equal to or greater than the undershoot.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
44
Explanation for Each Type
1. S-1701 Series A/B/C types
The S-1701 Series A/B/C t ypes provide a regulator block standby m ode realized by an ON/OFF function that is active
high. The internal c ircuit of the detector oper ates in the standb y mode, so onl y the curre nt that the detector cons umes
flows.
The SENSE pin is connected to the VIN pin in the internal circuit of the detector block, so the voltage applied to the
VIN pin is monitored and a reset signal is output from the VDOUT pin. The built-in counter timer allows selection of the
release delay time from three settings (A: No delay (60 μs), B: 50 ms, C: 100 ms).
The power supply is shared by the regul ator block and detector block and supplied from the VIN pin, so care must be
taken concerning VIN pin inp ut impedance*1.
2. S-1701 Series D/E/F types
The S-1701 Se ries D/E/F types provide a reg ulator block standby mod e realized by an ON/OFF function that is active
high. The internal c ircuit of the detector oper ates in the standb y mode, so onl y the curre nt that the detector cons umes
flows.
The SENSE pin is connected to the VOUT pi n, which is an output of the regulator, in the internal circuit of the detector
block, so the output voltage of the regulator (VOUT) is monitored and a reset signal is output from the VDOUT pin*2.
The built-in counter tim er allows selectio n of the rele ase delay time from three settings ( D: No dela y (60 μs), E: 50 ms,
F: 100 ms).
The power supply is shared by the regul ator block and detector block and supplied from the VIN pin, so care must be
taken concerning the VIN pin input impedance*1.
3. S-1701 Series G/H/J types
The S-1701 Se ries G/H/J types provide a regulator block standby mode r ealized by an ON/OFF function t hat is active
low. The internal c ircuit of the detector operates in the sta ndby mode, so only t he current that the detector consum es
flows.
The SENSE pin is connected to the VIN pin in the internal circuit of the detector block, so the voltage applied to the
VIN pin is monitored and a reset signal is output from the VDOUT pin. The built-in counter timer allows selection of the
release delay time from three settings (G: No delay (60 μs), H: 50 ms, J: 100 ms).
The power supply is shared by the regul ator block and detector block and supplied from the VIN pin, so care must be
taken concerning the VIN pin input impedance*1.
4. S-1701 Series K/L/M types
The S-1701 Series K/L/M t ypes provide a regulator block standby m ode realized by an ON/OFF function that is active
low. The internal c ircuit of the detector operates in the sta ndby mode, so only t he current that the detec tor consumes
flows.
The SENSE pin is connected to the VOUT pin, which is an output of the regulator in the internal circuit of the detector
block, so the output voltage of the regulator (VOUT) is monitored and a reset signal is output from the VDOUT pin*2.
The built-in counter timer allows selectio n of the release delay time from three settings (K: No dela y (60 μs), L: 50 ms,
M: 100 ms).
The power supply is shared by the regul ator block and detector block and supplied from the VIN pin, so care must be
taken concerning the VIN pin input impedance*1.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 45
5. S-1701 Series N/P/Q types
The S-1701 Series N/P/Q types do not provide an ON/OFF function because the ON/OFF pin is connected to the VIN
pin in the circuit.
The detector block features the external SEN SE pin, which allo ws monitoring of oth er power sup plies. T he SENSE p in
is configured onl y by a resistor, so instanta neous current such as through-type current does not flow through this pin.
This allows pre cise monitoring of the in put power supply by connecting the SENSE pin to the input power supply even
when a resistor (RIN) is connected bet ween the input po wer supply and the VIN pin. The bui lt-in counter timer allows
selection of the release dela y time from three settings (N: No delay (60 μs), P: 50 ms, Q: 100 ms).
The power supply is shared by the regul ator block and detector block and supplied from the VIN pin, so care must be
taken concerning the VIN pin input impedance*1.
6. S-1701 Series R/S/T types
In the S-1701 Series R/S/T types, the VDOUT pin, which is the output pin of the detector, is c onnected to the ON/OFF
pin of the regulator in the circuit. This allows setting of the regulator to the standby mode at the same time as the
VDOUT pin outputs a RESET signal.
The detector block featur es an external SEN SE pin, which allows monitoring of other power suppl ies. The SENSE pi n
is configured onl y by a resistor, so instanta neous current such as through-type current does not flow through this pin.
This allows pre cise monitoring of the in put power supply by connecting the SENSE pin to the input power supply even
when a resistor (RIN) is connected bet ween the input po wer supply and the VIN pin. The bui lt-in counter timer allows
selection of the release dela y time from three settings (R: No delay (60 μs), S: 50 ms, T: 100 ms).
The power supply is shared by the regul ator block and detector block and supplied from the VIN pin, so care must be
taken concerning the VIN pin input impedance*1.
7. S-1701 Series U/V/W types
The S-1701 Series U/V/W t ypes do not provide an ON/OFF function because the ON/OF F pin is connec ted to the VIN
pin in the circuit.
The SENSE pin is connected to the VOUT pin, which is an output pin of the regulator, in the internal circuit of the
detector block, so the output voltage of the regulator (VOUT) is monitored a nd a reset signal is output from the VDOUT
pin*2. The built-in counter timer allo ws selection of the release delay time from three settings (U: No de lay (60 μs), V:
50 ms, W: 100 ms).
The power supply is shared by the regul ator block and detector block and supplied from the VIN pin, so care must be
taken concerning the VIN pin input impedance*1.
8. S-1701 Series X/Y/Z types
The S-1701 Series X/Y/Z types do not provide an ON/OFF f unction because the ON/OFF pin is connected to the VIN
pin in the circuit.
The SENSE pin is connected to the VIN pin in the internal circuit of the detector block, so the voltage applied to the
VIN pin is monitored and a reset signal is output from the VDOUT pin. The built-in counter timer allows selection of the
release delay time from three settings ( X: No dela y (60 μs), Y: 50 ms, Z: 100 ms).
The power supply is shared by the regul ator block and detector block and supplied from the VIN pin, so care must be
taken concerning the VIN pin input impedance*1.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
46
*1. In S-1701 series, when connecting the resistance RIN between an input power supply pin and a VIN pin, and
defining the current which flows into RIN as IIN, VIN pin volt age falls by ΔVIN = IIN×RIN at the time of overload, and
changes by ΔVIN = IIN×RIN at the time of load change. Thereby, keep in mind that phenomena, such as output
voltage falls and an output oscillation, occur.
*2. If the input voltage or load current chang es transiently, an undershoot or o vershoot occurs in the output voltage of
the regulator. In the product types in which the output voltage of the regulator is detected by the detector, if the
output voltage is the detection voltage or lower due to the undershoot, the detector operates and a reset signal
may be output. To prevent this, set the value of the input-and-output capacitor of a regulator so that the
undershoot is the minimum v alue or set a voltage ra nge that allo ws the difference between the output v oltage and
detection voltage to be equal to or greater than the u ndershoot.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 47
Precautions
• Wiring patterns for the VIN, VOUT and GND pins s hou ld be desi gned so th at the imped ance is low. When mounting an
output capacitor between the VOUT and VSS pins (CL) and a capacitor for stabilizing the input between the VIN and
VSS pins (CIN), the distance from the capacitors to these pins shou ld be as short as possible.
• Note that the output voltage may increase whe n a series regu lator is used at low load current (1.0 mA or less).
• Generally, a series regulator may cause oscillation depending on the selection of external parts. The following
conditions are recommended for this IC. However, be sure to perform sufficient evaluation under the actual usage
conditions for selection, includ ing evaluation of temperature characteristics.
Input capacitor (CIN): 1.0 μF or more
Output capacitor (CL): 1.0 μF or more
Equivalent series resistance (ESR): 10 Ω or less
• The voltage regulator may oscillate when the impedanc e of the p ower supply is high and the input capacitor is sma ll or
an input capacitor is not connected.
• The application conditions for the input voltage, output voltage, and load current sho uld not exceed the package power
dissipation.
• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic
protection circuit.
• In determining the output current, attention s hould be paid t o the output current value specified in Tables 26 to 31 in the
electrical characteristics and footnote *7 of the table.
• SII claims no responsibility for any disputes arising out of or in connection with any infringement by products including
this IC of patents owned by a third party.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
48
Application Circuit
If the desired detection voltage range is other than those provided by the S-1701 Series, the detection voltage can be
changed by using a divided resistor or diode in the SENSE pin products (N/P/Q/R/S/T types) as shown in Figures 38 and
39.
In the case shown in Figure 38, the hysteresis width also changes at the same time.
1. Changing detection v oltage using divided resistor s
R
a*1
VDOUT
SENSE
VSS
VDD
S-1701 Series
N to T types
R
b
(R
a
≤ 75 kΩ)
VDD
Detection voltage = Ra+Rb
Rb • −VDET
Hysteresis width = Ra+Rb
Rb • VHYS
*1. Set Ra to 75 kΩ or lower to prevent oscillation.
Figure 38
Caution If Ra and Rb are larger, the hysteresis ma y be greater than the result o f the above formula due to the
through current of the IC.
2. Changing detection v oltage using diode
V
f1
VDOUT
SENSE
VSS
VDD
S-1701 Series
N to T types
V
f2
VDD
Detection voltage = Vf1 + Vf2 + (−VDET)
Figure 39
Caution The above connection diagrams (Figures 38 and 39) and constants will not guarantee successful
operation. Perform thorough evaluation using the actual application to set the constants.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 49
Characteristics (Typical Data)
1. Regulator block
(1) Output voltage vs. Output current (when load current increases)
S-1701x15xx (VOUT = 1.5 V, Ta = 25°C) S-1701x30xx (VOUT = 3.0 V, Ta = 25°C)
VOUT [V]
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0 0 200 400 600 800
2.0 V
V
IN
= 1.8 V 2.5 V
6.5 V
3.5 V
VOUT [V]
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0400
600
800
2000
3.5 V
V
IN
= 3.3 V
4.0 V
6.5 V
5.0 V
I
OUT [mA]
I
OUT [mA]
S-1701x50xx (VOUT = 5.0 V, Ta = 25°C)
VOUT [V]
6
5
4
3
2
1
0 400 600
800200
0
5.5 V
V
IN
= 5.3 V
6.0 V
6.5 V
Remark In determining the output current, attention should
be paid to the following.
1. The minimum output current value and footnote
*7 in Table 26 to 31 in the “Electrical
Characteristics”.
2. The package power dissipation
I
OUT [mA]
(2) Output voltage vs. Input voltage
S-1701x15xx (VOUT = 1.5 V, Ta = 25°C) S-1701x30xx (VOUT = 3.0 V, Ta = 25°C)
VOUT [V]
1.60
1.55
1.50
1.45
1.40
3.53.0
2.5
2.0
1.5
1.0
I
OUT
= 1 mA
30 mA
100 mA
VOUT [V]
3.10
3.05
3.00
2.95
2.90 5.04.5
4.0
3.53.02.5
I
OUT
= 1 mA
30 mA
100 mA
VIN [V]
VIN [V]
S-1701x50xx (VOUT = 5.0 V, Ta = 25°C)
VOUT [V]
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
7.06.5
6.0
5.5
5.0
4.5
I
OUT
= 1 mA
30 mA
100 mA
VIN [V]
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
50
(3) Dropout voltage vs. Output current
S-1701x15xx (VOUT = 1.5 V) S-1701x30xx (VOUT = 3.0 V)
Vdrop [V]
1.2
1.0
0.8
0.6
0.4
0.2
0
0
50
200 300
450
100
150
250
350
400
–40°C
25°C
Ta = 85°C
Vdrop [V]
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
00
50
200
300
450
100 150 250
350
400
−40°C
25°C
Ta = 85°C
I
OUT [mA]
I
OUT [mA]
S-1701x50xx (VOUT = 5.0 V)
Vdrop [V]
0.6
0.5
0.4
0.3
0.2
0.1
0
0
50
200 300
450
100
150
250
350
400
−40°C
25°C
Ta =85°C
I
OUT [mA]
(4) Output voltage vs. Ambient temperature
S-1701x15xx (VOUT = 1.5 V, IOUT = 30 mA) S-1701x30xx (VOUT = 3.0 V, IOUT = 30 mA)
VOUT [V]
1.7
1.6
1.5
1.4
1.3 25
−25 75 85
−40 0 50
VOUT [V]
3.2
3.1
3.0
2.9
2.8 25
−25 75 85
−40 0 50
Ta [°C]
Ta [°C]
S-1701x50xx (VOUT = 5.0 V, IOUT = 30 mA)
VOUT [V]
5.2
5.1
5.0
4.9
4.8
25
−25
75
85
−40
0
50
Ta [°C]
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 51
(5) Current consumption vs. Input voltage
S-1701x15xx (VOUT = 1.5 V) S-1701x30xx (VOUT = 3.0 V)
ISS [μA]
90
80
70
60
50
40
30
20
10
0 6
4
2
0 1 3 5 7
–40°C
25°C
Ta = 85°C
ISS [μA]
90
80
70
60
50
40
30
20
10
06
4
2
0 1 3 5 7
−40°C
25°C
Ta = 85°C
VIN [V] VIN [V]
S-1701x50xx (VOUT = 5.0 V)
ISS [μA]
90
80
70
60
50
40
30
20
10
0 6
4
2
0 1 3 5 7
−40°C
25°C
Ta = 85 °C
VIN [V]
(6) Ripple rejection ratio
S-1701x15xx (VOUT = 1.5 V, Ta = 25°C) S-1701x30xx (VOUT = 3.0 V, Ta = 25°C)
VIN = 2.5 V, CL = 1.0 μF, IOUT = 30 mA VIN = 4.0 V, CL = 1.0 μF, IOUT = 30 mA
Ripple Rejection [dB]
1M
100
80
60
40
20
0 100
1k
10k
100k
10
Ripple Rejection [dB]
1M
100
80
60
40
20
0100 1k
10k
100k
10
Frequency [Hz]
Frequency [Hz]
S-1701x50xx (VOUT = 5.0 V, Ta = 25°C)
VIN = 6.0 V, CL = 1.0 μF, IOUT = 30 mA
Ripple Rejection [dB]
1M
100
80
60
40
20
0 100 1k 10k 100k
10
Frequency [Hz]
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
52
2. Detector block
(1) Detection voltage vs. Ambient temperature
S-1701xxx15 (−VDET = 1.5 V) S-1701xxx55 (−VDET = 5.5 V)
VDET [V]
1.70
1.65
1.60
1.55
1.50
1.45
1.40
25
–25
75 85
–40
0
50
–V
DET
+V
DET
VDET [V]
6.2
6.0
5.8
5.6
5.4
5.2
5.0 25
–25 75 85
–40 0
50
–VDET
+VDET
Ta [°C]
Ta [°C]
(2) Hysteresis width vs. Ambient temperature
S-1701xxx15 (−VDET = 1.5 V) S-1701xxx55 (−VDET = 5.5 V)
VHYS [%]
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
25
−25
75
85
−40
0
50
VHYS [%]
25
−25 75
85
−40 0
50
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
Ta [°C]
Ta [°C]
(3) Detector block current consumption vs. Input voltage
S-1701xxx15 (−VDET = 1.5 V) S-1701xxx55 (−VDET = 5.5 V)
ISSD [μA]
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
6
4
2
0
1
3
5
7
−40°C
25°C
Ta = 85°C
ISSD [μA]
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
06
4
2
0
1
3
5
7
−40°C
25°C
Ta = 85°C
VIN [V]
VIN [V]
(4) Nch transistor output current vs. VDS characteristics
S-1701xxx55 (−VDET = 5.5 V, Ta = 25°C)
IDOUT [mA]
25
20
15
10
5
0
6
4
2
0
1
3
5
V
IN
= 1.4 V
2.0 V
3.0 V
4.0 V
5.0 V
VDS [V]
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 53
(5) Release delay time vs. Ambient temperature
S-1701xxx15 (VIN = 1.5 V, −VDET = 1.5 V, tD = 50 ms) S-1701xxx55 (VIN = 5.5 V, −VDET = 5.5 V, tD = 100 ms)
tD [ms]
100
90
80
70
60
50
40
30
20
10
0 25
−25
75
85
−40
0
50
tD [ms]
200
180
160
140
120
100
80
60
40
20
025
−25 75
85−40 0
50
Ta [°C]
Ta [°C]
S-1701xxx45 (VIN = 4.5 V, −VDET = 4.5 V, tD = 60 μs)
tD [μs]
100
90
80
70
60
50
40
30
20
10
0 25
−25
75
85
−40
0
50
Ta [°C]
(6) Minimum operating voltage vs. Input voltage
S-1701xxx15 (5 V pull up: 100 kΩ, −VDET = 1.5 V) S-1701xxx15 (VIN pull up: 100 kΩ, −VDET = 1.5 V)
VDOUT [V]
6
5
4
3
2
1
0 0.60.2
1.0
1.2
0
0.4
0.8
1.4
−40°C
25°C
Ta = 85°C
VDOUT [V]
0.6
0.5
0.4
0.3
0.2
0.1
00.6
0.2 1.0
1.2
0
0.4 0.8
1.4
−40°C
25°C
Ta = 85°C
VIN [V] VIN [V]
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
54
Reference Data
(1) Input transient response ch aracteristics
S-1701x15xx (VIN = 2.5 V ↔ 3.5 V, VOUT =1.5 V, Ta = 25°C) S-1701x30xx (VIN = 4.0 V ↔ 5.0 V, VOUT = 3.0 V, Ta = 25°C)
IOUT = 100 mA, tr = tf = 5.0 μs, CL = 1.0 μF, CIN = 1.0 μF IOUT = 100 mA, tr = tf = 5.0 μs, CL = 1.0 μF, CIN = 1.0 μF
VOUT [V]
–40 0 20 100
1.62
1.60
1.58
1.56
1.54
1.52
1.50
1.48
1.46
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–20 40 80
60 140 120 160 180
V
IN
V
OUT
VIN [V]
VOUT [V]
–40 020 100
3.08
3.06
3.04
3.02
3.00
2.98
2.96
6.0
5.0
4.0
3.0
2.0
1.0
0
–20 40 60 140 120 160 180
V
IN
V
OUT
80
VIN [V]
t [μs]
t [μs]
S-1701x50xx (VIN = 6.0 V ↔ 6.5 V, VOUT = 5.0 V, Ta = 25°C)
IOUT = 100 mA, tr = tf = 5.0 μs, CL = 1.0 μF, CIN = 1.0 μF
VOUT [V]
–40 0 20 100
5.12
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
–20 40 80
60 140 120 160 180
V
IN
V
OUT
VIN [V]
t [μs]
(2) Load transient response characteristics
S-1701x15xx (VOUT =1.5 V, Ta = 25°C) S-1701x30xx (VOUT = 3.0 V, Ta = 25°C)
V
IN
= 2.5 V, t
r
= t
f
= 5.0
μ
s, C
L
= 1.0
μ
F, C
IN
= 1.0
μ
F, I
OUT
= 50
↔
100 mA V
IN
= 4.0 V, t
r
= t
f
= 5.0
μ
s, C
L
= 1.0
μ
F, C
IN
= 1.0
μ
F, I
OUT
= 50
↔
100 mA
VOUT [V]
1.70
1.65
1.60
1.55
1.50
1.45
1.40
150
100
50
0
−50
−10
0
0
20
100
−20
40
80
60
140
120
160
I
OUT
V
OUT
IOUT [mA]
VOUT [V]
3.20
3.15
3.10
3.05
3.00
2.95
2.90
150
100
50
0
−50
−10
0
I
OUT
V
OUT
020 100
−20 40 80
60 140
120
160
IOUT [mA]
t [μs] t [μs]
S-1701x50xx (VOUT = 5.0 V, Ta = 25°C)
V
IN
= 6.0 V, t
r
= t
f
= 5.0
μ
s, C
L
= 1.0
μ
F, C
IN
= 1.0
μ
F, I
OUT
= 50
↔
100 mA
VOUT [V]
5.20
5.15
5.10
5.05
5.00
4.95
4.90
150
100
50
0
−50
−10
0
I
OUT
V
OUT
0
20
100
−20
40
80
60
140
120
160
IOUT [mA]
t [μs]
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 55
(3) ON/OFF pin transient respon se characteristics
S-1701x15xx (VOUT = 1.5 V, Ta = 25°C) S-170 1x30xx (VOUT = 3.0 V, Ta = 25°C)
V
IN
= 2.5 V, t
r
= t
f
= 5.0
μ
s, C
L
= 1.0
μ
F, C
IN
= 1.0
μ
F, I
OUT
= 100 mA V
IN
= 4.0 V, t
r
= t
f
= 5.0
μ
s, C
L
= 1.0
μ
F, C
IN
= 1.0
μ
F, I
OUT
= 100 mA
VOUT [V]
3
2
1
0
−1
−2
−3
5
4
3
2
1
0
−1
0
10
20
30
40
50
60
70
−10
80
90
V
ON/OFF
V
OUT
VON/OFF [V]
VOUT [V]
6
4
2
0
−2
−4
−6
7
6
5
4
3
2
1
0
−1
010 20 30
40
50
60
70
−10 80
90
V
ON/OFF
V
OUT
VON/OFF [V]
t [μs]
t [μs]
S-1701x50xx (VOUT = 5.0 V, Ta = 25°C)
V
IN
= 6.0 V, t
r
= t
f
= 5.0
μ
s, C
L
= 1.0
μ
F, C
IN
= 1.0
μ
F, I
OUT
= 100 mA
VOUT [V]
6
3
0
−3
−6
9
7
5
3
1
−1
0
10
20
30
40
50
60
70
−10
80
90
V
ON/OFF
V
OUT
VON/OFF [V]
t [μs]
(4) Dynamic response char acteristics vs. CDOUT
S-1701xxx15 (VIN pull up: 100 kΩ, −VDET = 1.5 V, Ta = 25°C) S-1701xxx5 5 (VIN pull up: 100 kΩ, −VDET = 5.5 V, Ta = 25°C)
Response time [ms]
1000
100
10
1
0.1
0.01
0.001
0.0001 0.001 0.01 0.1
0.00001
t
PHL
t
PLH
Response time [ms]
1000
100
10
1
0.1
0.01
0.001
t
PHL
t
PLH
0.0001 0.001 0.01 0.1
0.00001
CDOUT [μF] CDOUT [μF]
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
56
(a) Measurement conditions of dynamic response vs. CDOUT
1 μs 1 μs
V
IH
t
PHL
V
IN
× 90%
t
PLH
V
IH
= 6.5 V, V
IL
= 1.3 V
V
IN
× 10%
V
IL
V
IN
Input voltage
Output voltage
Figure 40
(b) Measurement circuit of the dynamic response for S-1701 Series A/B/C/G/H/J/X/Y/Z types
VSS
VOUT
(ON/OFF)
VIN
V
Set to
power off.
+
VDOUT
100 kΩ
V
+
CDOUT
Figure 41
(c) Measurement circuit of the dynamic response for S-1701 Series D/E/F/K/L/M/U/V/W types
VSS
VOUT
(ON/OFF)
VIN
V
+
VDOUT
100 kΩ
V
+
CDOUT
Set to
power off.
Figure 42
(d) Measurement circuit of the dynamic response for S-1701 Series N/P/Q/R/S/T types
VSS
VOUT
SENSE
VIN
V
+
VDOUT
100 kΩ
V
+
CDOUT
Figure 43
Caution The above connection diagrams will not guarantee successful operation. Perform thorough
evaluation using the actual application to set the constants.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 57
Marking Specifications
(1) SOT-23-5
(1) to (3): Product code (Refer to Product name vs. Product code)
(4): Lot number
5 4
1 3
2
(1) (2) (3) (4)
SOT-23-5
Top view
Product name vs. Product code
(a) S-1701 Series A Type (b) S-1701 Series B Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701A1541-M5T1x T B E S-1701B1815-M5T1x P 6 R
S-1701A1815-M5T1x P 6 A S-1701B1823-M5T1x P 6 9
S-1701A2520-M5T1x P 6 B S-1701B1828-M5T1x T E A
S-1701A2521-M5T1x P 6 C S-1701B2520-M5T1x P 6 S
S-1701A2522-M5T1x P 6 D S-1701B2521-M5T1x P 6 T
S-1701A2728-M5T1x P 6 Q S-1701B2522-M5T1x P 6 U
S-1701A2825-M5T1x T B A S-1701B3024-M5T1x P 6 V
S-1701A2833-M5T1x T B D S-1701B3025-M5T1x P 6 W
S-1701A3024-M5T1x P 6 E S-1701B3026-M5T1x P 6 X
S-1701A3025-M5T1x P 6 F S-1701B3326-M5T1x P 6 Y
S-1701A3026-M5T1x P 6 G S-1701B3327-M5T1x P 6 Z
S-1701A3326-M5T1x P 6 H S-1701B3328-M5T1x P 6 3
S-1701A3327-M5T1x P 6 I S-1701B3430-M5T1x P 8 Y
S-1701A3328-M5T1x P 6 J S-1701B5040-M5T1x P 6 4
S-1701A3330-M5T1x P 6 P S-1701B5041-M5T1x P 6 5
S-1701A3331-M5T1x T B C S-1701B5042-M5T1x P 6 6
S-1701A3430-M5T1x P 6 K S-1701B5043-M5T1x P 6 7
S-1701A5040-M5T1x P 6 L
S-1701A5041-M5T1x P 6 M
S-1701A5042-M5T1x P 6 N
S-1701A5043-M5T1x P 6 O
Remark 1. Please contact our sales office for products with specifications other than the above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
58
(c) S-1701 Series C Type (d) S-1701 Series D Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701C1815-M5T1x P 9 A S-1701D1815-M5T1x P V A
S-1701C2520-M5T1x P 9 B S-1701D1816-M5T1x T C C
S-1701C2521-M5T1x P 9 C S-1701D1817-M5T1x T C B
S-1701C2522-M5T1x P 9 D S-1701D2520-M5T1x P V B
S-1701C3024-M5T1x P 9 E S-1701D2521-M5T1x P V C
S-1701C3025-M5T1x P 9 F S-1701D2522-M5T1x P V D
S-1701C3026-M5T1x P 9 G S-1701D2523-M5T1x P V P
S-1701C3326-M5T1x P 9 H S-1701D2524-M5T1x P V Q
S-1701C3327-M5T1x P 9 I S-1701D2526-M5T1x P V R
S-1701C3328-M5T1x P 9 J S-1701D2722-M5T1x P V S
S-1701C3330-M5T1x P 9 P S-1701D3024-M5T1x P V E
S-1701C3430-M5T1x P 9 K S-1701D3025-M5T1x P V F
S-1701C5040-M5T1x P 9 L S-1701D3026-M5T1x P V G
S-1701C5041-M5T1x P 9 M S-1701D3326-M5T1x P V H
S-1701C5042-M5T1x P 9 N S-1701D3327-M5T1x P V I
S-1701C5043-M5T1x P 9 O S-1701D3328-M5T1x P V J
S-1701D3330-M5T1x T C A
S-1701D3430-M5T1x P V O
S-1701D5040-M5T1x P V K
S-1701D5041-M5T1x P V L
S-1701D5042-M5T1x P V M
S-1701D5043-M5T1x P V N
(e) S-1701 Series E Type (f) S-1701 Series F Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701E1815-M5T1x P V T S-1701F1815-M5T1x P W F
S-1701E2520-M5T1x P V U S-1701F2520-M5T1x P W G
S-1701E2521-M5T1x P V V S-1701F2521-M5T1x P W H
S-1701E2522-M5T1x P V W S-1701F2522-M5T1x P W I
S-1701E2722-M5T1x P W C S-1701F2722-M5T1x P W U
S-1701E3024-M5T1x P V X S-1701F3024-M5T1x P W J
S-1701E3025-M5T1x P V Y S-1701F3025-M5T1x P W K
S-1701E3026-M5T1x P V Z S-1701F3026-M5T1x P W L
S-1701E3326-M5T1x P V 3 S-1701F3326-M5T1x P W M
S-1701E3327-M5T1x P V 4 S-1701F3327-M5T1x P W N
S-1701E3328-M5T1x P V 5 S-1701F3328-M5T1x P W O
S-1701E3330-M5T1x P W B S-1701F3430-M5T1x P W T
S-1701E3430-M5T1x P W A S-1701F5040-M5T1x P W P
S-1701E5040-M5T1x P V 6 S-1701F5041-M5T1x P W Q
S-1701E5041-M5T1x P V 7 S-1701F5042-M5T1x P W R
S-1701E5042-M5T1x P V 8 S-1701F5043-M5T1x P W S
S-1701E5043-M5T1x P V 9
Remark 1. Please contact our sales office for products with specifications other than the above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 59
(g) S-1701 Series G Type (h) S-1701 Series M Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701G2524-M5T1x T A N S-1701M1815-M5T1x T D A
S-1701G3331-M5T1x T A O
(i) S-1701 Series N Type (j) S-1701 Series P Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701N1515-M5T1x P W Y S-1701P1515-M5T1x P X I
S-1701N1815-M5T1x P W Z S-1701P1527-M5T1x P X P
S-1701N1827-M5T1x P W 9 S-1701P1815-M5T1x P X J
S-1701N2515-M5T1x P W 3 S-1701P2515-M5T1x P X K
S-1701N2715-M5T1x P W 4 S-1701P2715-M5T1x P X L
S-1701N2724-M5T1x P X D S-1701P3015-M5T1x P X M
S-1701N3015-M5T1x P W 5 S-1701P3315-M5T1x P X N
S-1701N3315-M5T1x P W 6 S-1701P5015-M5T1x P X O
S-1701N3330-M5T1x P X F
S-1701N5015-M5T1x P W 7
(k) S-1701 Series Q Type (l) S-1701 Series R Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701Q1515-M5T1x P X Z S-1701R1515-M5T1x P Y E
S-1701Q1815-M5T1x P X 3 S-1701R1815-M5T1x P Y F
S-1701Q2515-M5T1x P X 4 S-1701R2515-M5T1x P Y G
S-1701Q2715-M5T1x P X 5 S-1701R2715-M5T1x P Y H
S-1701Q3015-M5T1x P X 6 S-1701R3015-M5T1x P Y I
S-1701Q3315-M5T1x P X 7 S-1701R3315-M5T1x P Y J
S-1701Q5015-M5T1x P X 8 S-1701R5015-M5T1x P Y K
(m) S-1701 Series S Type (n) S-1701 Series T Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701S1515-M5T1x P Y Q S-1701T1515-M5T1x P Z A
S-1701S1815-M5T1x P Y R S-1701T1815-M5T1x P Z B
S-1701S2515-M5T1x P Y S S-1701T2515-M5T1x P Z C
S-1701S2715-M5T1x P Y T S-1701T2715-M5T1x P Z D
S-1701S3015-M5T1x P Y U S-1701T3015-M5T1x P Z E
S-1701S3315-M5T1x P Y V S-1701T3315-M5T1x P Z F
S-1701S5015-M5T1x P Y W S-1701T3325-M5T1x P Z H
S-1701T5015-M5T1x P Z G
Remark 1. Please contact our sales office for products with specifications other than the above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
60
(o) S-1701 Series U Type (p) S-1701 Series V Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701U1815-M5T1x P Z R S-1701V1815-M5T1x P 7 E
S-1701U2520-M5T1x P Z S S-1701V2520-M5T1x P 7 F
S-1701U2521-M5T1x P Z T S-1701V2521-M5T1x P 7 G
S-1701U2522-M5T1x P Z U S-1701V2522-M5T1x P 7 H
S-1701U3024-M5T1x P Z V S-1701V3024-M5T1x P 7 I
S-1701U3025-M5T1x P Z W S-1701V3025-M5T1x P 7 J
S-1701U3026-M5T1x P Z X S-1701V3026-M5T1x P 7 K
S-1701U3326-M5T1x P Z Y S-1701V3227-M5T1x P 7 U
S-1701U3327-M5T1x P Z Z S-1701V3325-M5T1x P 7 T
S-1701U3328-M5T1x P Z 3 S-1701V3326-M5T1x P 7 L
S-1701U3430-M5T1x P Z 8 S-1701V3327-M5T1x P 7 M
S-1701U5040-M5T1x P Z 4 S-1701V3328-M5T1x P 7 N
S-1701U5041-M5T1x P Z 5 S-1701V3430-M5T1x P 7 S
S-1701U5042-M5T1x P Z 6 S-1701V5040-M5T1x P 7 O
S-1701U5043-M5T1x P Z 7 S-1701V5041-M5T1x P 7 P
S-1701V5042-M5T1x P 7 Q
S-1701V5043-M5T1x P 7 R
(q) S-1701 Series W Type (r) S-1701 Series X Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701W1626-M5T1x P 8 H S-1701X1525-M5T1x P 8 M
S-1701W1815-M5T1x P 7 X S-1701X1825-M5T1x P 8 3
S-1701W2520-M5T1x P 7 Y S-1701X2219-M5T1x P 8 K
S-1701W2521-M5T1x P 7 Z S-1701X3025-M5T1x P 8 4
S-1701W2522-M5T1x P 7 3 S-1701X3228-M5T1x P 8 J
S-1701W3024-M5T1x P 7 4 S-1701X3315-M5T1x P 8 N
S-1701W3025-M5T1x P 7 5
S-1701W3026-M5T1x P 7 6
S-1701W3227-M5T1x P 8 G
S-1701W3326-M5T1x P 7 7
S-1701W3327-M5T1x P 7 8
S-1701W3328-M5T1x P 7 9
S-1701W3430-M5T1x P 8 E
S-1701W5040-M5T1x P 8 A
S-1701W5041-M5T1x P 8 B
S-1701W5042-M5T1x P 8 C
S-1701W5043-M5T1x P 8 D
(s) S-1701 Series Y Type (t) S-1701 Series Z Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701Y3228-M5T1x P 8 O S-1701Z1626-M5T1x P 8 U
S-1701Y3342-M5T1x P 8 Q S-1701Z1826-M5T1x P 8 V
S-1701Z3228-M5T1x P 8 T
S-1701Z3330-M5T1x P 8 W
Remark 1. Please contact our sales office for products with specifications other than the above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 61
(2) SOT-89-5
(1) to (3): Product code (Refer to Product name vs. Product code)
(4) to (6): Lot number
5 4
1 3
2
(2)
SOT-89-5
Top view
(1) (3)
(5) (4) (6)
Product name vs. Product code
(a) S-1701 Series A Type (b) S-1701 Series B Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701A1815-U5T1x P 6 A S-1701B1815-U5T1x P 6 R
S-1701A2520-U5T1x P 6 B S-1701B2520-U5T1x P 6 S
S-1701A2521-U5T1x P 6 C S-1701B2521-U5T1x P 6 T
S-1701A2522-U5T1x P 6 D S-1701B2522-U5T1x P 6 U
S-1701A3024-U5T1x P 6 E S-1701B3024-U5T1x P 6 V
S-1701A3025-U5T1x P 6 F S-1701B3025-U5T1x P 6 W
S-1701A3026-U5T1x P 6 G S-1701B3026-U5T1x P 6 X
S-1701A3326-U5T1x P 6 H S-1701B3326-U5T1x P 6 Y
S-1701A3327-U5T1x P 6 I S-1701B3327-U5T1x P 6 Z
S-1701A3328-U5T1x P 6 J S-1701B3328-U5T1x P 6 3
S-1701A3430-U5T1x P 6 K S-1701B3342-U5T1x P 6 8
S-1701A5040-U5T1x P 6 L S-1701B3430-U5T1x P 8 Y
S-1701A5041-U5T1x P 6 M S-1701B5040-U5T1x P 6 4
S-1701A5042-U5T1x P 6 N S-1701B5041-U5T1x P 6 5
S-1701A5043-U5T1x P 6 O S-1701B5042-U5T1x P 6 6
S-1701B5043-U5T1x P 6 7
(c) S-1701 Series C Type (d) S-1701 Series D Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701C1815-U5T1x P 9 A S-1701D1815-U5T1x P V A
S-1701C1830-U5T1x P 9 Q S-1701D2520-U5T1x P V B
S-1701C2520-U5T1x P 9 B S-1701D2521-U5T1x P V C
S-1701C2521-U5T1x P 9 C S-1701D2522-U5T1x P V D
S-1701C2522-U5T1x P 9 D S-1701D3024-U5T1x P V E
S-1701C3024-U5T1x P 9 E S-1701D3025-U5T1x P V F
S-1701C3025-U5T1x P 9 F S-1701D3026-U5T1x P V G
S-1701C3026-U5T1x P 9 G S-1701D3326-U5T1x P V H
S-1701C3326-U5T1x P 9 H S-1701D3327-U5T1x P V I
S-1701C3327-U5T1x P 9 I S-1701D3328-U5T1x P V J
S-1701C3328-U5T1x P 9 J S-1701D3430-U5T1x P V O
S-1701C3430-U5T1x P 9 K S-1701D5040-U5T1x P V K
S-1701C5040-U5T1x P 9 L S-1701D5041-U5T1x P V L
S-1701C5041-U5T1x P 9 M S-1701D5042-U5T1x P V M
S-1701C5042-U5T1x P 9 N S-1701D5043-U5T1x P V N
S-1701C5043-U5T1x P 9 O
Remark 1. Please contact our sales office for products with specifications other than the above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
62
(e) S-1701 Series E Type (f) S-1701 Series F Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701E1815-U5T1x P V T S-1701F1815-U5T1x P W F
S-1701E2520-U5T1x P V U S-1701F2520-U5T1x P W G
S-1701E2521-U5T1x P V V S-1701F2521-U5T1x P W H
S-1701E2522-U5T1x P V W S-1701F2522-U5T1x P W I
S-1701E3024-U5T1x P V X S-1701F3024-U5T1x P W J
S-1701E3025-U5T1x P V Y S-1701F3025-U5T1x P W K
S-1701E3026-U5T1x P V Z S-1701F3026-U5T1x P W L
S-1701E3326-U5T1x P V 3 S-1701F3326-U5T1x P W M
S-1701E3327-U5T1x P V 4 S-1701F3327-U5T1x P W N
S-1701E3328-U5T1x P V 5 S-1701F3328-U5T1x P W O
S-1701E3430-U5T1x P W A S-1701F3430-U5T1x P W T
S-1701E5040-U5T1x P V 6 S-1701F5040-U5T1x P W P
S-1701E5041-U5T1x P V 7 S-1701F5041-U5T1x P W Q
S-1701E5042-U5T1x P V 8 S-1701F5042-U5T1x P W R
S-1701E5043-U5T1x P V 9 S-1701F5043-U5T1x P W S
(g) S-1701 Series H Type (h) S-1701 Series N Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701H5045-U5T1x T A A S-1701N1515-U5T1x P W Y
S-1701N1815-U5T1x P W Z
S-1701N1824-U5T1x P X C
S-1701N2515-U5T1x P W 3
S-1701N2715-U5T1x P W 4
S-1701N2724-U5T1x P X D
S-1701N3015-U5T1x P W 5
S-1701N3315-U5T1x P W 6
S-1701N3330-U5T1x P X F
S-1701N5015-U5T1x P W 7
(i) S-1701 Series P Type (j) S-1701 Series Q Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701P1515-U5T1x P X I S-1701Q1515-U5T1x P X Z
S-1701P1815-U5T1x P X J S-1701Q1815-U5T1x P X 3
S-1701P2515-U5T1x P X K S-1701Q2515-U5T1x P X 4
S-1701P2715-U5T1x P X L S-1701Q2715-U5T1x P X 5
S-1701P2843-U5T1x P X Q S-1701Q3015-U5T1x P X 6
S-1701P2844-U5T1x P X R S-1701Q3227-U5T1x P X 9
S-1701P3015-U5T1x P X M S-1701Q3242-U5T1x P Y A
S-1701P3315-U5T1x P X N S-1701Q3315-U5T1x P X 7
S-1701P5015-U5T1x P X O S-1701Q5015-U5T1x P X 8
Remark 1. Please contact our sales office for products with specifications other than the above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.3.0_00 S-1701 Series
Seiko Instruments Inc. 63
(k) S-1701 Series R Type (l) S-1701 Series S Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701R1515-U5T1x P Y E S-1701S1515-U5T1x P Y Q
S-1701R1815-U5T1x P Y F S-1701S1815-U5T1x P Y R
S-1701R2515-U5T1x P Y G S-1701S2515-U5T1x P Y S
S-1701R2715-U5T1x P Y H S-1701S2715-U5T1x P Y T
S-1701R3015-U5T1x P Y I S-1701S3015-U5T1x P Y U
S-1701R3315-U5T1x P Y J S-1701S3315-U5T1x P Y V
S-1701R5015-U5T1x P Y K S-1701S5015-U5T1x P Y W
(m) S-1701 Series T Type (n) S-1701 Series U Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701T1515-U5T1x P Z A S-1701U1815-U5T1x P Z R
S-1701T1815-U5T1x P Z B S-1701U2520-U5T1x P Z S
S-1701T2515-U5T1x P Z C S-1701U2521-U5T1x P Z T
S-1701T2715-U5T1x P Z D S-1701U2522-U5T1x P Z U
S-1701T3015-U5T1x P Z E S-1701U3024-U5T1x P Z V
S-1701T3315-U5T1x P Z F S-1701U3025-U5T1x P Z W
S-1701T5015-U5T1x P Z G S-1701U3026-U5T1x P Z X
S-1701U3326-U5T1x P Z Y
S-1701U3327-U5T1x P Z Z
S-1701U3328-U5T1x P Z 3
S-1701U3430-U5T1x P Z 8
S-1701U5040-U5T1x P Z 4
S-1701U5041-U5T1x P Z 5
S-1701U5042-U5T1x P Z 6
S-1701U5043-U5T1x P Z 7
(o) S-1701 Series V Type (p) S-1701 Series W Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701V1815-U5T1x P 7 E S-1701W1815-U5T1x P 7 X
S-1701V2520-U5T1x P 7 F S-1701W2520-U5T1x P 7 Y
S-1701V2521-U5T1x P 7 G S-1701W2521-U5T1x P 7 Z
S-1701V2522-U5T1x P 7 H S-1701W2522-U5T1x P 7 3
S-1701V3024-U5T1x P 7 I S-1701W3024-U5T1x P 7 4
S-1701V3025-U5T1x P 7 J S-1701W3025-U5T1x P 7 5
S-1701V3026-U5T1x P 7 K S-1701W3026-U5T1x P 7 6
S-1701V3326-U5T1x P 7 L S-1701W3324-U5T1x P 8 F
S-1701V3327-U5T1x P 7 M S-1701W3326-U5T1x P 7 7
S-1701V3328-U5T1x P 7 N S-1701W3327-U5T1x P 7 8
S-1701V3430-U5T1x P 7 S S-1701W3328-U5T1x P 7 9
S-1701V5040-U5T1x P 7 O S-1701W3430-U5T1x P 8 E
S-1701V5041-U5T1x P 7 P S-1701W5040-U5T1x P 8 A
S-1701V5042-U5T1x P 7 Q S-1701W5041-U5T1x P 8 B
S-1701V5043-U5T1x P 7 R S-1701W5042-U5T1x P 8 C
S-1701W5043-U5T1x P 8 D
Remark 1. Please contact our sales office for products with specifications other than the above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series Rev.3.0_00
Seiko Instruments Inc.
64
(q) S-1701 Series X Type (r) S-1701 Series Y Type
Product Code Product Code
Product Name (1) (2) (3) Product Name (1) (2) (3)
S-1701X3228-U5T1x P 8 J S-1701Y3228-U5T1x P 8 O
S-1701X3330-U5T1x P 8 L S-1701Y3330-U5T1x P 8 S
S-1701X3342-U5T1x P 8 5 S-1701Y3340-U5T1x P 8 P
S-1701Y3342-U5T1x P 8 Q
(s) S-1701 Series Z Type
Product Code
Product Name (1) (2) (3)
S-1701Z3228-U5T1x P 8 T
Remark 1. Please contact our sales office for products with specifications other than the above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
2.9±0.2
1.9±0.2
0.95±0.1
0.4±0.1
0.16 +0.1
-0.06
123
4
5
No. MP005-A-P-SD-1.2
MP005-A-P-SD-1.2
SOT235-A-PKG Dimensions
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
ø1.5 +0.1
-0 2.0±0.05
ø1.0 +0.2
-0 4.0±0.1
1.4±0.2
0.25±0.1
3.2±0.2
123
45
No. MP005-A-C-SD-2.1
MP005-A-C-SD-2.1
SOT235-A-Carrier Tape
Feed direction
4.0±0.1(10 pitches:40.0±0.2)
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
12.5max.
9.0±0.3
ø13±0.2
(60°) (60°)
QTY. 3,000
No. MP005-A-R-SD-1.1
MP005-A-R-SD-1.1
SOT235-A-Reel
Enlarged drawing in the central part
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
1.5±0.1 1.5±0.1
1.6±0.2
4.5±0.1
132
1.5±0.1
0.4±0.05
0.4±0.1
0.45±0.1
0.4±0.1
45°
0.3
54
No. UP005-A-P-SD-1.1
UP005-A-P-SD-1.1
SOT895-A-PKG Dimensions
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
2.0±0.1
0.3±0.05
8.0±0.1
ø1.5+0.1
-0
2.0±0.05
ø1.5+0.1
-0
4.75±0.1
5° max.
1
32
54
No. UP005-A-C-SD-1.1
UP005-A-C-SD-1.1
SOT895-A-Carrier Tape
Feed direction
4.0±0.1(10 pitches : 40.0±0.2)
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
16.5max.
13.0±0.3
QTY. 1,000
(60°)
(60°)
No. UP005-A-R-SD-1.1
UP005-A-R-SD-1.1
SOT895-A-Reel
Enlarged drawing in the central part
www.sii-ic.com
• The information described herein is subject to change without notice.
• Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described herein
whose related industrial properties, patents, or other rights belong to third parties. The application circuit
examples explain typical applications of the products, and do not guarantee the success of any specific
mass-production design.
• When the products described herein are regulated products subject to the Wassenaar Arrangement or other
agreements, they may not be exported without authorization from the approp riate governmental authority.
• Use of the information described herein for other purposes and/or reproduction or copying without the
express permissi on of Seiko Instruments Inc. is strictly prohibited.
• The products described herein cannot be used as part of any device or equipment affecting the human
body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus
installed in airplanes and other vehicle s, without prior written permission of Seiko Instruments Inc.
• The products described herein are n ot de signed to be radiation-proof.
• Although Seiko Instruments Inc. exerts the greatest possible effort to ensure high quality and reliability, the
failure or malfunction of semiconductor products may occur. The user of these products should therefore
give thorough consideration to safety design, including redundancy, fire-prevention measures, and
malfunction prevention, to prevent any accidents, fires, or comm unity damage that may ensue.
