R1160x SERIES
3-MODE 200mA LDO REGULATOR
NO.EA-083-130415
1
OUTLINE
The R1160x Series consist of CMOS-based voltage regulator ICs with high output voltage accuracy, low
supply current, and low ON-resistance. Each of these voltage regulator ICs consists of a voltage reference unit,
an error amplifier, resistors for setting Output Voltage, a current limit circuit, and a chip enable circuit.
These ICs perform with low dropout voltage and a chip enable function. To prevent the destruction by over
current, current limit circuit is included. The R1160x Series have 3-mode. One is standby mode with CE or
standby control pin. Other two modes are realized with ECO pin™. Fast Transient Mode (FT mode) and Low
Power Mode (LP mode) are alternative with ECO pin™. Consumption current is reduced to 1/10 at Low Power
Mode compared with Fast Transient Mode. Output voltage is maintained between FT mode and LP mode.
The output voltage of these ICs is internally fixed with high accuracy. Since the packages for these ICs are
SOT-23-5 and SON-6 (Non-promotion) packages, high density mounting of the ICs on boards is possible.
FEATURES
• Supply Current (Low Power Mode)............................... Typ. 3.5μA (VOUT ≤ 1.5V)
• Supply Current (Fast Transient Mode).......................... Typ. 40μA
• Supply Current (Standby Mode).................................... Typ. 0.1μA
• Dropout Voltage ............................................................ Typ. 0.14V (IOUT=200mA, VOUT=2.8V)
• Ripple Rejection............................................................ Typ. 70dB (f=1kHz, FT Mode)
• Temperature-Drift Coefficient of Output Voltage ........... Typ. ±100ppm/°C
• Line Regulation ............................................................. Typ. 0.05%/V
• Output Voltage Accuracy............................................... ±2.0% (±3.0% at LP Mode)
• Output Voltage Range................................................... 0.8V to 3.3V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
• Input Voltage Range ..................................................... 1.4V to 6.0V
• Built-in Fold Back Protection Circuit ............................. Typ. 50mA (Current at short mode)
• Packages ..................................................................... SOT-23-5, SON-6 (Non-promotion)
APPLICATIONS
• Precision Voltage References.
• Power source for electrical appliances such as cameras, VCRs and hand-held communication equipment.
• Power source for battery-powered equipment.
R1160x
2
BLOCK DIAGRAMS
R1160xxx1A R1160xxx1B
VDD
GND
VOUT
ECO
Vref
Current
Limit
CE
V
DD
CE GND
V
OUT
ECO
Vref
Current
Limit
SELECTION GUIDE
The output voltage, chip enable polarity, and package, etc. for the ICs can be selected at the user’s request.
Product Name Package Quantity per Reel Pb Free Halogen Free
R1160Nxx1∗-TR-FE SOT-23-5 3,000 pcs Yes Yes
R1160Dxx1∗-TR-FE SON-6
(Non-promotion) 3,000 pcs Yes Yes
xx : The output voltage can be designated in the range from 0.8V(08) to 3.3V(33) in 0.1V steps.
(For other voltages, please refer to MARK INFORMATIONS.)
∗ : CE pin polarity are options as follows.
(A) "L" active type.
(B) "H" active type.
The products scheduled to be discontinued : "Non-promotion"
These products will be discontinued in the future. We advise you to select other products.
R1160x
3
PIN CONFIGURATION
• SOT-23-5 • SON-6
1
4
5
2 3
(mark side)
654
123
Top View Bottom View
4 5 6
3 2 1
∗
PIN DESCRIPTIONS
• SOT-23-5
Pin No Symbol Pin Description
1 VDD Input Pin
2 GND Ground Pin
3 CE or CE Chip Enable Pin
4 ECO MODE alternative pin
5 VOUT Output Pin
• SON-6 (Non-promotion)
Pin No Symbol Pin Description
1 VDD Input Pin
2 NC No Connection
3 VOUT Output Pin
4 ECO MODE alternative pin
5 GND Ground Pin
6 CE or CE Chip Enable Pin
∗) Tab suspension leads are GND level. (They are connected to the reverse side of this IC.)
The tab suspension leads should be open and do not connect to other wires or land patterns.
R1160x
4
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
VIN Input Voltage 6.5 V
VECO Input Voltage ( ECO Pin) −0.3 to VIN+0.3 V
VCE Input Voltage (CE or CE Pin) −0.3 to VIN+0.3 V
VOUT Output Voltage −0.3 to VIN+0.3 V
IOUT Output Current 250 mA
Power Dissipation (SOT-23-5)∗ 420 mW
PD
Power Dissipation (SON-6) (Non-promotion)∗ 500 mW
Topt Operating Temperature Range −40 to 85 °C
Tstg Storage Temperature Range −55 to 125 °C
∗) For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field.
The functional operation at or over these absolute maximum ratings is not assured.
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the
recommended operating conditions, even if when they are used over such conditions by momentary
electronic noise or surge. And the semiconductor devices may receive serious damage when they continue
to operate over the recommended operating conditions.
R1160x
5
ELECTRICAL CHARACTERISTICS
• R1160xxx1A
Topt=25°C
Symbol Item Conditions Min. Typ. Max. Unit
Output Voltage (FT Mode) VIN=Set VOUT+1V, VECO=VIN
1μA ≤ IOUT ≤ 30mA∗1
×0.98
(-30mV) ×1.02
(30mV) V
VOUT
Output Voltage (LP Mode) VIN=Set VOUT+1V, VECO=GND
1μA ≤ IOUT ≤ 30mA∗2
×0.97
(-45mV) ×1.03
(45mV) V
IOUT Output Current VIN −VOUT=1V 200 mA
Load Regulation (FT Mode) VIN=Set VOUT+1V, VECO=VIN
1mA ≤ IOUT ≤ 200mA 20 40 mV
ΔVOUT/ΔIOUT
Load Regulation (LP Mode) VIN=Set VOUT+1V, VECO=GND
1mA ≤ IOUT ≤ 100mA 10 40 mV
VDIF Dropout Voltage Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT
VOLTAGE
ISS1 Supply Current (FT Mode) VIN=Set VOUT+1V, VECO=VIN, 40 70
μA
VIN=Set VOUT+1V,
VOUT ≤ 1.5V, VECO=GND 3.5 6.0
μA
ISS2 Supply Current (LP Mode) VIN=Set VOUT+1V,
VOUT ≥ 1.6V, VECO=GND 4.5 8.0
μA
Istandby Supply Current (Standby) VIN=VCE=Set VOUT+1V
VECO=GND or VIN 0.1 1.0
μA
Line Regulation (FT Mode)
Set VOUT+0.5V ≤ VIN ≤ 6V
IOUT=30mA, VECO=VIN
(In case that VOUT ≤ 0.9V,
1.4V ≤ VIN ≤ 6V)
0.05 0.20 %/V
ΔVOUT/ΔVIN
Line Regulation (LP Mode)
Set VOUT+0.5V ≤ VIN ≤ 6V
IOUT=30mA, VECO=GND
(In case that VOUT ≤ 0.9V,
1.4V ≤ VIN ≤ 6V)
0.10 0.30 %/V
RR Ripple Rejection (FT Mode)
f=1kHz, Ripple 0.2Vp-p
VIN=Set VOUT+1V
IOUT=30mA, VECO=VIN
70 dB
VIN Input Voltage 1.4 6.0 V
ΔVOUT/
ΔTopt
Output Voltage
Temperature Coefficient
IOUT=30mA
−40°C ≤ Topt ≤ 85°C ±100 ppm
/°C
ISC Short Current Limit VOUT=0V 50 mA
RPUC CE Pull-up Resistance 2.0 5.0 14.0
MΩ
RPDE ECO Pull-down Resistance 1.5 5.0 14.0
MΩ
VCEH CE ,ECO Input Voltage "H" 1.0 VIN V
VCEL CE ,ECO Input Voltage "L" 0 0.3 V
∗1 : ±30mV Tolerance for VOUT ≤ 1.5V
∗2 : ±45mV Tolerance for VOUT ≤ 1.5V
R1160x
6
• R1160xxx1B
Topt=25°C
Symbol Item Conditions Min. Typ. Max. Unit
Output Voltage (FT Mode) VIN=Set VOUT+1V, VECO=VIN
1μA ≤ IOUT ≤ 30mA∗1
×0.980
(-30mV) ×1.020
(30mV) V
VOUT
Output Voltage (LP Mode) VIN=Set VOUT+1V,VECO=GND
1μA ≤ IOUT ≤ 30mA∗2
×0.970
(-45mV) ×1.030
(45mV) V
IOUT Output Current VIN−VOUT=1V 200 mA
Load Regulation (FT Mode) VIN=Set VOUT+1V, VECO=VIN
1mA ≤ IOUT ≤ 200mA 20 40 mV
ΔVOUT/ΔIOUT
Load Regulation (LP Mode) VIN=Set VOUT+1V, VECO=GND
1mA ≤ IOUT ≤ 100mA 10 40 mV
VDIF Dropout Voltage Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT
VOLTAGE
ISS1 Supply Current (FT Mode) VIN=Set VOUT+1V, VECO=VIN 40 70
μA
VIN=Set VOUT+1V,
VOUT ≤ 1.5V, VECO=GND 3.5 6.0
μA
ISS2 Supply Current (LP Mode) VIN=Set VOUT+1V,
VOUT ≥ 1.6V, VECO=GND 4.5 8.0
μA
Istandby Supply Current (Standby) VIN=Set VOUT+1V
VCE=GND, VECO=GND or VIN 0.1 1.0
μA
Line Regulation (FT Mode)
Set VOUT+0.5V ≤ VIN ≤ 6.0V
IOUT=30mA, VECO=VIN
(In case that VOUT ≤ 0.9V,
1.4V ≤ VIN ≤ 6V)
0.05 0.20 %/V
ΔVOUT/ΔVIN
Line Regulation (LP Mode)
Set VOUT+0.5V ≤ VIN ≤ 6.0V
IOUT=30mA, VECO=GND
(In case that VOUT ≤ 0.9V,
1.4V ≤ VIN ≤ 6V)
0.10 0.30 %/V
RR Ripple Rejection (FT Mode)
f=1kHz, Ripple 0.2Vp-p
VIN=Set VOUT+1V
IOUT=30mA, VECO=VIN
70 dB
VIN Input Voltage 1.4 6.0 V
ΔVOUT/
ΔTopt
Output Voltage
Temperature Coefficient
IOUT=30mA
−40°C ≤ Topt ≤ 85°C ±100 ppm
/°C
ISC Short Current Limit VOUT=0V 50 mA
RPDC CE Pull-down Resistance 2.0 5.0 14.0
MΩ
RPDE ECO Pull-down Resistance 1.5 5.0 14.0
MΩ
VCEH CE, ECO Input Voltage "H" 1.0 VIN V
VCEL CE, ECO Input Voltage "L" 0 0.3 V
∗1 : ±30mV Tolerance for VOUT ≤ 1.5V
∗2 : ±45mV Tolerance for VOUT ≤ 1.5V
R1160x
7
• ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt=25°C
Dropout Voltage VDIF (V)
Output Voltage
V
OUT (V) Condition Typ. Max.
0.8 ≤ VOUT ≤ 0.9 0.40 0.70
1.0 ≤ VOUT ≤ 1.4 0.30 0.50
1.5 ≤ VOUT ≤ 2.5 0.20 0.30
2.6 ≤ VOUT
IOUT=200mA
0.14 0.20 (ECO="H")
0.25 (ECO="L")
TEST CIRCUITS
GND
OUT
R1160xxx1x
SERIES
VDD
C1 C2
CE ECO
IOUT
C1=Tantal 1.0μF
C2=Tantal 2.2μF
VIN
A
Fig.1 Output Voltage v s. Output Current Test Circuit
GND
OUT
R1160xxx1x
SERIES
V
DD
C1 C2
CE ECO
I
OUT
V
OUT
V
IN
V
C1=Tantal 1.0μF
C2=Tantal 2.2μF
Fig.2 Output Voltage vs. Input Volt age Test Circuit
R1160x
8
GND
OUT
R1160xxx1x
SERIES
V
DD
C1 C2
CE ECO
V
IN
AC1=Tantal 1.0μF
C2=Tantal 2.2μF
Fig.3 Supply Current vs. Input Voltage Test Circuit
GND
OUT
R1160xxx1x
SERIES
V
DD
C1 C2
CE ECO
I
OUT
=30mA
V
OUT
VIN
V
C1=Tantal 1.0μF
C2=Tantal 2.2μF
Fig.4 Output Voltage vs. Temperature Test Circuit
GND
OUT
R1160xxx1x
SERIES
V
DD
C1 C2
CE ECO
I
SO
V
OUT
C1=Tantal 1.0μF
C2=Tantal 2.2μF
V
IN
A
A
Fig.5 Supply Current vs. Temperature Test Circuit
R1160x
9
GND
OUT
R1160xxx1x
SERIES
VDD
C1 C2
CE ECO VOUT
VDIF
V
V
C1=Tantal 1.0μF
C2=Tantal 2.2μF
Fig. 6 Dropout Voltage vs. Output Current/ Set Output Voltage Test Circuit
GND
OUT
R1160xxx1x
SERIES
VDD
C2
CE ECO
IOUT
VOUT
VIN
Pulse
Generator
C2=Tantalum Capacitor
Fig. 7 Ripple Rejection Test Circuit
GND
OUT
R1160xxx1x
SERIES
VDD
C2
CE ECO
IOUT
VOUT
VIN
Pulse
Generator
C2=Tantalum Capacitor
Fig.8 Input Transient Response Test Circuit
R1160x
10
GND
OUT
R1160xxx1x
SERIES
V
DD
C2
C1
I2I1
CE ECO
V
OUT
V
IN
C1=Tantal 1.0μF
C2=Tantalum Capacitor
Fig.9 Load Transient Response Test Circuit
GND
OUT
R1160xxx1x
SERIES
V
DD
C1 C2
Function
Generator
CE ECO
C1=Tantal 1.0μF
C2=Tantal 2.2μF
V
IN
Fig.10 Turn on S peed with CE pin Test Circuit
GND
OUT
R1160xxx1x
SERIES
VDD
C2
C1
CE ECO
IOUT
VOUT
VIN
Pulse
Generator
C1=Tantalum 1.0μF
C2=Tantalum 2.2μF
Fig.11 MODE Transient Respon se Test Circuit
R1160x
11
GND
OUT
R1160xxx1x
SERIES
VDD
C2
SR
C1
CE ECO
VIN S.A.
Spectrum
Analyzer
C1=Ceramic 1.0μF
C2=Ceramic Capacitor
IOUT
Fig.12 Output Noise Test Circuit ( IOUT vs. ESR )
TYPICAL APPLICATION
GND
OUT
R1160xxx1x
SERIES
V
DD
C1 C2
CE ECO
C1=1.0μF
C2=2.2μF
(External Components)
C1: Ceramic Capacitor 1μF
C2: Tantalum Capacitor 2.2μF
R1160x
12
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
R1160x081x R1160x081x
0.9
0.8
0.7
0.5
0.4
0.6
0.3
0.2
0.1
0.0
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
0100 200 300 400
ECO=H
VIN=2.8V
1.4V
0.9
0.7
0.8
0.6
0.4
0.3
0.5
0.2
0.1
0.0
Output Current I
OUT(mA)
Output Voltage VOUT(V)
0 100 200 300 400
ECO=L
V
IN
=2.8V
1.4V
R1160x151x R1160x151x
1.6
1.4
1.2
0.8
0.6
1.0
0.4
0.2
0.0
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
0 100 200 300 400
ECO=H
V
IN
=3.5V
1.8V
1.6
1.4
1.2
0.8
0.6
1.0
0.4
0.2
0.0
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
0 100 200 300 400
ECO=L
1.8V
V
IN
=3.5V
R1160x261x R1160x261x
3.0
2.0
2.5
1.5
0.0
0.5
1.0
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
0 100 200 300 400
ECO=H
2.9V
V
IN
=4.6V
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
0 100 200 300 400
ECO=L
2.9V
V
IN
=4.6V
R1160x
13
R1160x331x R1160x331x
3.5
2.5
3.0
2.0
1.5
0.5
1.0
0.0
Output Current IOUT(mA)
Output Voltage V
OUT
(V)
0 100 200 300 400
3.6V
V
IN
=5.3V
ECO=H
3.5
2.0
2.5
3.0
1.5
1.0
0.5
0.0
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
0 100 200 300 400
3.6V
V
IN
=5.3V
ECO=L
2) Output Voltage vs. Input Voltage
R1160x081x R1160x081x
1.0
0.8
0.9
0.7
0.6
0.4
0.3
0.5
0.2
0.1
0.0
Input Voltage VIN(V)
Output Voltage VOUT(V)
012 4563
I
OUT
= 1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=H
1.0
0.8
0.9
0.7
0.6
0.4
0.3
0.5
0.2
0.1
0.0
Input Voltage VIN(V)
Output Voltage VOUT(V)
012 4563
I
OUT
= 1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=L
R1160x151x R1160x151x
1.0
1.2
1.4
1.6
0.8
0.6
0.4
0.2
0.0
Input Voltage VIN(V)
Output Voltage VOUT(V)
012 4563
I
OUT
= 1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=H
1.0
1.2
1.4
1.6
0.8
0.6
0.4
0.2
0.0
Input Voltage VIN(V)
Output Voltage VOUT(V)
012 4563
I
OUT
= 1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=L
R1160x
14
R1160x261x R1160x261x
1.5
2.5
2.0
3.0
1.0
0.5
0.0
Input Voltage VIN(V)
Output Voltage VOUT(V)
012 4563
I
OUT
= 1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=H
1.5
2.5
2.0
3.0
1.0
0.5
0.0
Input Voltage VIN(V)
Output Voltage VOUT(V)
012 4563
I
OUT
= 1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=L
R1160x331x R1160x331x
2.0
1.5
3.0
2.5
3.5
1.0
0.5
0.0
Input Voltage VIN(V)
Output Voltage VOUT(V)
012 4563
IOUT= 1mA
IOUT=30mA
IOUT=50mA
ECO=H
2.0
1.5
3.0
2.5
3.5
1.0
0.5
0.0
Input Voltage VIN(V)
Output Voltage VOUT(V)
012 4563
IOUT= 1mA
IOUT=30mA
IOUT=50mA
ECO=L
3) Supply Current vs. Input Voltage
R1160x081x R1160x081x
40
30
60
50
70
20
10
0
Input Voltage VIN(V)
Supply Current ISS(μA)
012 4563
ECO=H
4
3
6
5
7
8
2
1
0
Input Voltage VIN(V)
Supply Current ISS(μA)
012 4563
ECO=L
R1160x
15
R1160x151x R1160x151x
70
60
40
30
50
20
10
0
Input Voltage VIN(V)
Supply Current ISS(μA)
012 4563
ECO=H
8
7
6
4
3
5
2
1
0
Input Voltage V
IN
(V)
Supply Current I
SS
(μA)
012 4563
ECO=L
R1160x261x R1160x261x
70
60
40
30
50
20
10
0
Input Voltage V
IN
(V)
Supply Current I
SS
(μA)
012 4563
ECO=H
8
7
6
4
3
5
2
1
0
Input Voltage VIN(V)
ECO=L
Supply Current ISS(μA)
012 4563
R1160x331x R1160x331x
70
60
40
30
50
20
10
0
Input Voltage VIN(V)
Supply Current ISS(μA)
012 4563
ECO=H
8
7
6
4
3
5
2
1
0
Input Voltage VIN(V)
Supply Current ISS(μA)
012 4563
ECO=L
R1160x
16
4) Output Voltage vs. Temperature
R1160x081x R1160x081x
0.83
0.81
0.80
0.82
0.79
0.78
0.77
Temperature Topt(
°
C)
Output Voltage V
OUT
(V)
-50 -25 0 50 75 10025
ECO=H
0.83
0.81
0.80
0.82
0.79
0.78
0.77
Temperature Topt(
°
C)
Output Voltage V
OUT
(V)
-50 -25 0 50 75 10025
ECO=L
R1160x151x R1160x151x
1.53
1.50
1.49
1.51
1.52
1.48
1.47
1.46
Temperature Topt(°C)
Output Voltage V
OUT
(V)
-50 -25 0 50 75 10025
ECO=H
1.53
1.50
1.49
1.51
1.52
1.48
1.47
1.46
Temperature Topt(
°
C)
Output Voltage V
OUT
(V)
-50 -25 0 50 75 10025
ECO=L
R1160x261x R1160x261x
2.65
2.61
2.60
2.62
2.63
2.64
2.59
2.58
2.57
Temperature Topt(
°
C)
Output Voltage VOUT(V)
-50 -25 0 50 75 10025
ECO=H
2.65
2.61
2.60
2.62
2.63
2.64
2.59
2.58
2.57
Temperature Topt(
°
C)
Output Voltage V
OUT
(V)
-50 -25 0 50 75 10025
ECO=L
R1160x
17
R1160x331x R1160x331x
3.37
3.33
3.31
3.35
3.29
3.27
3.25
3.23
Temperature Topt(
°
C)
Output Voltage V
OUT
(V)
-50 -25 0 50 75 10025
ECO=H
3.37
3.33
3.31
3.35
3.29
3.27
3.25
3.23
Temperature Topt(
°
C)
Output Voltage VOUT(V)
-50 -25 0 50 75 10025
ECO=L
5) Supply Current vs. Input Voltage
R1160x081x R1160x081x
70
50
40
60
30
20
10
0
Temperature Topt(
°
C)
Supply Current I
SS
(
μ
A)
-50 -25 0 50 75 10025
ECO=H
8
6
5
7
4
3
2
1
0
Temperature Topt(
°
C)
Supply Current ISS(
μ
A)
-50 -25 0 50 75 10025
ECO=L
R1160x151x R1160x151x
70
50
40
60
30
20
10
0
Temperature Topt(
°
C)
Supply Current I
SS
(
μ
A)
-50 -25 0 50 75 10025
ECO=H
8
6
5
7
4
3
2
1
0
Temperature Topt(°C)
Supply Current I
SS
(μA)
-50 -25 0 50 75 10025
ECO=L
R1160x
18
R1160x261x R1160x261x
70
50
40
60
30
20
10
0
Temperature Topt(
°
C)
Supply Current ISS(
μ
A)
-50 -25 0 50 75 10025
ECO=H
8
6
5
7
4
3
2
1
0
Temperature Topt(
°
C)
Supply Current I
SS
(
μ
A)
-50 -25 0 50 75 10025
ECO=L
R1160x331x R1160x331x
70
50
40
60
30
20
10
0
Temperature Topt(°C)
Supply Current ISS(μA)
-50 -25 0 50 75 10025
ECO=H
8
6
5
7
4
3
2
1
0
Temperature Topt(
°
C)
Supply Current I
SS
(
μ
A)
-50 -25 0 50 75 10025
ECO=L
6) Dropout Voltage vs. Output Current
R1160x081x R1160x081x
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(V)
0 25 50 100 125 150 175 20075
85°C
25°C
-40°C
ECO=H
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(V)
0 25 50 100 125 150 175 20075
85°C
25°C
-40°C
ECO=L
R1160x
19
R1160x101x R1160x101x
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(V)
0 25 50 100 125 150 175 20075
85°C
25°C
-40°C
ECO=H
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(V)
0 25 50 100 125 150 175 20075
85°C
25°C
-40°C
ECO=L
R1160x151x R1160x151x
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(V)
0 25 50 100 125 150 175 20075
85°C
25°C
-40°C
ECO=H
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(V)
0 25 50 100 125 150 175 20075
85°C
25°C
-40°C
ECO=L
R1160x261x R1160x261x
0.20
0.15
0.10
0.05
0.00
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(V)
0 25 50 100 125 150 175 20075
85°C
25°C
-40°C
ECO=H
0.20
0.15
0.10
0.05
0.00
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(V)
0 25 50 100 125 150 175 20075
85°C
25°C
-40°C
ECO=L
R1160x
20
R1160x331x R1160x331x
0.20
0.15
0.10
0.05
0.00
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(V)
0 25 50 100 125 150 175 20075
85°C
25°C
-40°C
ECO=H
0.20
0.15
0.10
0.05
0.00
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(V)
0 25 50 100 125 150 175 20075
85°C
25°C
-40°C
ECO=L
7) Dropout Voltage vs. Set Output Voltage (Topt=25°C)
R1160xxx1x R1160xxx1x
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Set Output Voltage V
REG
(V)
Dropout Voltage V
DIF
(V)
0.5 1.0 2.0 2.5 3.0 3.51.5
I
OUT
=10mA
30mA
50mA
120mA
200mA
ECO=H
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Set Output Voltage VREG(V)
Dropout Voltage V
DIF
(V)
0.5 1.0 2.0 2.5 3.0 3.51.5
I
OUT
=10mA
30mA
50mA
120mA
200mA
ECO=L
8) Ripple Rejection vs. Input Bias (Topt=25°C)
R1160x261x R1160x261x
80
70
60
50
40
30
20
10
0
Input Voltage VIN(V)
Ripple Rejection RR(dB)
2.60 2.70 2.90 3.00 3.102.80
f=400Hz
f=1kHz
f=10kHz
f=100kHz
Ripple 0.2Vp-p, IOUT=1mA,
CIN; none, COUT=Tantal 2.2μF
80
70
60
50
40
30
20
10
0
Input Voltage VIN(V)
Ripple Rejection RR(dB)
2.60 2.70 2.90 3.00 3.102.80
f=400Hz
f=1kHz
f=10kHz
f=100kHz
Ripple 0.5Vp-p, I
OUT
=1mA,
C
IN
; none, C
OUT
=Tantal 2.2μF
R1160x
21
R1160x261x R1160x261x
80
70
60
50
40
30
20
10
0
Input Voltage VIN(V)
Ripple Rejection RR(dB)
2.60 2.70 2.90 3.00 3.102.80
f=400Hz
f=1kHz
f=10kHz
f=100kHz
Ripple 0.2Vp-p, I
OUT
=30mA,
C
IN
; none, C
OUT
=Tantal 2.2μF
80
70
60
50
40
30
20
10
0
Input Voltage VIN(V)
Ripple Rejection RR(dB)
2.60 2.70 2.90 3.00 3.102.80
f=400Hz
f=1kHz
f=10kHz
f=100kHz
Ripple 0.5Vp-p, IOUT=30mA,
CIN; none, COUT=Tantal 2.2μF
R1160x261x R1160x261x
80
70
60
50
40
30
20
10
0
Input Voltage VIN(V)
Ripple Rejection RR(dB)
2.60 2.70 2.90 3.00 3.102.80
f=400Hz
f=1kHz
f=10kHz
f=100kHz
Ripple 0.2Vp-p, IOUT=50mA,
CIN; none, COUT=Tantal 2.2μF
80
70
60
50
40
30
20
10
0
Input Voltage VIN(V)
Ripple Rejection RR(dB)
2.60 2.70 2.90 3.00 3.102.80
f=400Hz
f=1kHz
f=10kHz
f=100kHz
Ripple 0.5Vp-p, IOUT=50mA,
CIN; none, COUT=Tantal 2.2μF
9) Ripple Rejection vs. Frequency
R1160x081x R1160x081x
90
70
80
60
50
40
30
20
10
0
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1 10 100
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=H, V
IN
1.8V
DC
+0.2Vp-p,
C
IN
; none, C
OUT
=Tantal 2.2μF
90
70
80
60
50
40
30
20
10
0
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1 10 100
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=L, V
IN
1.8V
DC
+0.2Vp-p,
C
IN
; none, C
OUT
=Tantal 2.2μF
R1160x
22
R1160x151x R1160x151x
90
70
80
60
50
40
30
20
10
0
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1 10 100
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=H, V
IN
2.5V
DC
+0.2Vp-p,
C
IN
; none, C
OUT
=Tantal 2.2μF
90
70
80
60
50
40
30
20
10
0
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1 10 100
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=L, V
IN
2.5V
DC
+0.2Vp-p,
C
IN
; none, C
OUT
=Tantal 2.2μF
R1160x261x R1160x261x
90
70
80
60
50
40
30
20
10
0
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1 10 100
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=H, V
IN
3.6V
DC
+0.2Vp-p,
C
IN
; none, C
OUT
=Tantal 1.0μF
90
70
80
60
50
40
30
20
10
0
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1 10 100
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=L, V
IN
3.6V
DC
+0.2Vp-p,
C
IN
; none, C
OUT
=Tantal 1.0μF
R1160x261x R1160x261x
90
70
80
60
50
40
30
20
10
0
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1 10 100
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=H, V
IN
3.6V
DC
+0.2Vp-p,
C
IN
; none, C
OUT
=Tantal 2.2μF
90
70
80
60
50
40
30
20
10
0
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1 10 100
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=L, V
IN
3.6V
DC
+0.2Vp-p,
C
IN
; none, C
OUT
=Tantal 2.2μF
R1160x
23
R1160x331x R1160x331x
90
70
80
60
50
40
30
20
10
0
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1 10 100
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=H, V
IN
4.3V
DC
+0.2Vp-p,
C
IN
; none, C
OUT
=Tantal 1.0μF
90
70
80
60
50
40
30
20
10
0
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1 10 100
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=L, V
IN
4.3V
DC
+0.2Vp-p,
C
IN
; none, C
OUT
=Tantal 1.0μF
R1160x331x R1160x331x
90
70
80
60
50
40
30
20
10
0
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1 10 100
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=H, V
IN
4.3V
DC
+0.2Vp-p,
C
IN
; none, C
OUT
=Tantal 2.2μF
90
70
80
60
50
40
30
20
10
0
Frequency f(kHz)
Ripple Rejection RR(dB)
0.1 1 10 100
I
OUT
=1mA
I
OUT
=30mA
I
OUT
=50mA
ECO=L, V
IN
4.3V
DC
+0.2Vp-p,
C
IN
; none, C
OUT
=Tantal 2.2μF
10) Input Transient Response
R1160x261x R1160x261x
2.68
2.66
2.64
2.62
2.60
2.58
2.56
Time T(μs)
Output Voltage VOUT(V)
5
4
3
2
1
0
Input Voltage VIN(V)
0 102030405060708090100
Input Voltage
Output Voltage
ECO=H, I
OUT
=30mA,
tr=tf=5μs, C
OUT
=Tantal 1.0μF
5.00
4.50
4.00
3.50
3.00
2.50
2.00
Time T(ms)
Output Voltage VOUT(V)
5
4
3
2
1
0
Input Voltage VIN(V)
0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0
Input Voltage
Output Voltage
ECO=L, I
OUT
=10mA,
tr=tf=5μs, C
OUT
=Tantal 1.0μF
R1160x
24
11) Load Transient Response
R1160x261x R1160x261x
3
2.9
2.8
2.7
2.6
2.5
2.4
Time T(μs)
Output Voltage V
OUT
(V)
150
100
50
0
Load Current I
OUT
(mA)
-2024681012141618
Load Current
Output Voltage
ECO=H, VIN=3.6V,
CIN=Tantal 1.0μF, COUT=Tantal 1.0μF
4.5
4
3.5
3
2.5
2
1.5
Time T(ms)
Output Voltage V
OUT
(V)
20
10
0
Load Current I
OUT
(mA)
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0
Load Current
Output Voltage
ECO=L, V
IN
=3.6V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 1.0μF
R1160x261x R1160x261x
3
2.9
2.8
2.7
2.6
2.5
2.4
Time T(μs)
Output Voltage V
OUT
(V)
150
100
50
0
Load Current I
OUT
(mA)
024681012141618
Load Current
Output Voltage
ECO=H, V
IN
=3.6V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 2.2μF
4.5
4
3.5
3
2.5
2
1.5
Time T(ms)
Output Voltage V
OUT
(V)
20
10
0
Load Current I
OUT
(mA)
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0
Load Current
Output Voltage
ECO=L, V
IN
=3.6V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 2.2μF
R1160x261x R1160x261x
3
2.9
2.8
2.7
2.6
2.5
2.4
Time T(μs)
Output Voltage V
OUT
(V)
150
100
50
0
Load Current I
OUT
(mA)
024681012141618
Load Current
Output Voltage
ECO=H, V
IN
=3.6V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 4.7μF
4.5
4
3.5
3
2.5
2
1.5
Time T(ms)
Output Voltage V
OUT
(V)
20
10
0
Load Current I
OUT
(mA)
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0
Load Current
Output Voltage
ECO=L, V
IN
=3.6V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 4.7μF
R1160x
25
12) Turn on speed with CE pin
R1160x081B R1160x081B
2.4
1.8
1.2
0.6
0.0
Time T(μs)
CE Input Voltage V
CE
(V)
2.5
2.0
1.5
1.0
0.5
0.0
Output Voltage V
OUT
(V)
0 10203040506070
VCE=0V→1.8V
IOUT=200mA
ECO=H, V
IN
=1.8V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 2.2μF
2.4
1.8
1.2
0.6
0.0
2.5
2.0
1.5
1.0
0.5
0.0
0 100200300400500600700
V
CE
=0V→1.8V
I
OUT
=200mA
ECO=L, VIN=1.8V,
CIN=Tantal 1.0μF, COUT=Tantal 2.2μF
Time T(μs)
CE Input Voltage V
CE
(V)
Output Voltage V
OUT
(V)
R1160x151B R1160x151B
3.2
2.4
1.6
0.8
0.0
Time T(μs)
CE Input Voltage V
CE
(V)
2.5
2.0
1.5
1.0
0.5
0.0
Output Voltage V
OUT
(V)
0 10203040506070
V
CE
=0V→2.5V
I
OUT
=200mA
ECO=H, V
IN
=2.5V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 2.2μF
3.2
2.4
1.6
0.8
0.0
Time T(μs)
CE Input Voltage V
CE
(V)
2.5
2.0
1.5
1.0
0.5
0.0
Output Voltage V
OUT
(V)
0 100200300400500600700
VCE=0V→2.5V
IOUT=200mA
ECO=L, V
IN
=2.5V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 2.2μF
R1160x261B R1160x261B
4.0
3.0
2.0
1.0
0.0
Time T(μs)
CE Input Voltage V
CE
(V)
5.0
4.0
3.0
2.0
1.0
0.0
Output Voltage V
OUT
(V)
0 10203040506070
VCE=0V→3.6V
IOUT=200mA
ECO=H, V
IN
=3.6V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 2.2μF
4.0
3.0
2.0
1.0
0.0
Time T(μs)
CE Input Voltage V
CE
(V)
5.0
4.0
3.0
2.0
1.0
0.0
Output Voltage V
OUT
(V)
0 100200300400500600700
V
CE
=0V→3.6V
I
OUT
=200mA
ECO=L, VIN=3.6V,
CIN=Tantal 1.0μF, COUT=Tantal 2.2μF
R1160x
26
R1160x331B R1160x331B
5.0
4.0
3.0
2.0
1.0
0.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Time T(μs)
CE Input Voltage V
CE
(V)
Output Voltage V
OUT
(V)
0 10203040506070
VCE=0V→4.3V
IOUT=200mA
ECO=H, V
IN
=4.3V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 2.2μF
5.0
4.0
3.0
2.0
1.0
0.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Time T(μs)
CE Input Voltage V
CE
(V)
Output Voltage V
OUT
(V)
0 100200300400500600700
V
CE
=0V→4.3V
I
OUT
=200mA
ECO=L, V
IN
=4.3V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 2.2μF
13) Output Voltage at Mode alternative point
R1160x101x R1160x101x
1.05
0.99
1.00
0.98
0.99
1.01
1.00
0.99
1.00
1.01
0.99
1.00
1.01
1.02
1.03
1.04
0.99
1.00
3.0
0.0
1.0
2.0
0.98
-
-
-
-
1.01
1.00
0.99
Time T(ms)
Output Voltage VOUT(V)
ECO Input Voltage ECO-IN(V)
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
IOUT=200mA
IOUT=100mA
IOUT=50mA
IOUT=10mA
IOUT=1mA
IOUT=0mA
VECO-0V←→1.3V
V
IN
=1.3V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 2.2μF
1.05
0.99
1.00
0.98
0.99
1.00
0.99
1.00
1.01
0.99
0.99
1.00
1.01
1.00
1.01
1.02
1.03
1.04 3.0
0.0
1.0
2.0
0.98
-
-
-
-
1.01
1.00
0.99
0.98
Time T(ms)
Output Voltage V
OUT
(V)
ECO Input Voltage ECO-IN(V)
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
V
ECO
-0V←→2.0V
I
OUT
=0mA
I
OUT
=1mA
I
OUT
=10mA
I
OUT
=50mA
I
OUT
=100mA
I
OUT
=200mA
VIN=2.0V,
CIN=Tantal 1.0μF, COUT=Tantal 2.2μF
R1160x
27
R1160x261x R1160x261x
2.67
2.60
2.61
2.59
2.60
2.61
2.59
2.60
2.60
2.61
2.61
2.62
2.60
2.61
2.62
2.63
2.64
2.65
2.66 4.0
0.0
1.0
2.0
3.0
2.59
-
-
-
-
2.60
2.59
Time T(ms)
Output Voltage V
OUT
(V)
ECO Input Voltage ECO-IN(V)
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
2.58
VECO-0V←→2.9V
IOUT=0mA
IOUT=1mA
IOUT=10mA
IOUT=50mA
IOUT=100mA
IOUT=200mA
V
IN
=2.9V,
C
IN
=Tantal 1.0μF, C
OUT
=Tantal 2.2μF
2.67
2.60
2.61
2.59
2.60
2.61
2.59
2.60
2.60
2.61
2.61
2.62
2.60
2.61
2.62
2.63
2.64
2.65
2.66 4.0
0.0
1.0
2.0
3.0
2.59
-
-
-
-
Time T(ms)
Output Voltage V
OUT
(V)
ECO Input Voltage ECO-IN(V)
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
2.60
2.59
2.58
V
ECO
-0V←→3.6V
I
OUT
=0mA
I
OUT
=1mA
I
OUT
=10mA
I
OUT
=50mA
I
OUT
=100mA
I
OUT
=200mA
VIN=3.6V,
CIN=Tantal 1.0μF, COUT=Tantal 2.2μF
R1160x
28
TECHNICAL NOTES
C1
R1160x
Series
VDD VOUT
ECO GND
C2
CE
(External Components)
C1: Ceramic Capacitor 1μF
C2: Tantalum Capacitor 2.2μF
When using these ICs, consider the following points:
1. PCB Layout
Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result.
Connect a capacitor C1 with a capacitance value as much as 1.0μF or more between VDD and GND pin, and as
close as possible to the pins.
Set external components, especially the output capacitor C2, as close as possible to the ICs, and make wiring
as short as possible.
2. Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
this purpose, use a capacitor C2 with 2.2μF or more and good ESR (Equivalent Series Resistance).
(Note: If additional ceramic capacitors are connected with parallel to the output pin with an output capacitor for
phase compensation, the operation might be unstable. Because of this, test these ICs with as same external
components as ones to be used on the PCB.)
If you use a tantalum type capacitor and ESR value of the capacitor is large, output might be unstable.
Evaluate your circuit with considering frequency characteristics.
If you use a ceramic type output capacitor, please connect about 1Ω resistor in series for the stability of output
voltage.
Depending on the capacitor size, manufacturer, and part number, the bias characteristics and temperature
characteristics are different. Evaluate the circuit with actual using capacitors.
R1160x
29
ESR vs. Output Current
When using these ICs, consider the following points:
The relations between IOUT (Output Current) and ESR of an output capacitor are shown below.
The conditions when the white noise level is under 40μV (Avg.) are marked as the hatched area in the graph.
Measurement conditions
Frequency Band : 10Hz to 2MHz
Temperature : 25°C
R1160x261x R1160x261x
100
10
1
0.1
0.01
Output Current I
OUT
(mA)
ESR(Ω)
020 6040 120 140 160 180 20080 100
ECO=H, V
IN
=3.6V,
C
IN
=Ceramic 1.0μF, C
OUT
=Ceramic 1.0μF
100
10
1
0.1
0.01
Output Current I
OUT
(mA)
ESR(Ω)
020 6040 120 140 160 180 20080 100
ECO=L, V
IN
=3.6V,
C
IN
=Ceramic 1.0μF, C
OUT
=Ceramic 1.0μF
R1160x261x R1160x261x
100
10
1
0.1
0.01
Output Current IOUT(mA)
ESR(Ω)
020 6040 120 140 160 180 20080 100
ECO=H, V
IN
=3.6V,
C
IN
=Ceramic 1.0μF, C
OUT
=Ceramic 2.2μF
100
10
1
0.1
0.01
Output Current IOUT(mA)
ESR(Ω)
020 6040 120 140 160 180 20080 100
ECO=L, V
IN
=3.6V,
C
IN
=Ceramic 1.0μF, C
OUT
=Ceramic 2.2μF
R1160x
30
R1160x081x R1160x081x
100
10
1
0.1
0.01
Output Current IOUT(mA)
ESR(Ω)
020 6040 120 140 160 180 20080 100
ECO=H, V
IN
=1.8V,
C
IN
=Ceramic 1.0μF, C
OUT
=Ceramic 2.2μF
100
10
1
0.1
0.01
Output Current IOUT(mA)
ESR(Ω)
020 6040 120 140 160 180 20080 100
ECO=L, V
IN
=1.8V,
C
IN
=Ceramic 1.0μF, C
OUT
=Ceramic 2.2μF
RICOHCOMPANY,LTD.
ElectronicDevicesCompany
http://www.ricoh.com/LSI/
For the conservation of the global environment, Ricoh is advancing the decrease of the negative environmental impact material.
After Apr. 1, 2006, we will ship out the lead free products only. Thus, all products that will be shipped from now on comply with RoHS Directive.
Basically after Apr. 1, 2012, we will ship out the Power Management ICs of the Halogen Free products only. (Ricoh Halogen Free products are
also Antimony Free.)
Halogen Free
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