R1131x Series
Low Voltage 300mA LDO
No.EK-116-100119 CMOS LDO Regulator
The R1131x Series are CMOS-based LDO regulators featuring 300mA output. The input voltage (VIN) is as low as Min. 1.4V and the
output voltage can be set from 0.8V. The CE pin can switch the regulator into standby mode. Ceramic capacitors can be used.
(VOUT
>
=
1.0V)
FEATURES
• Supply Current (ISS)························Typ. 80μA (VIN=SET VOUT+1V, VOUT<1.8V)
Typ. 60μA (Same as above, VOUT
>
=
1.8V)
• Standby Current (Istandby) ·················Typ. 0.1μA (Same as above, in standby)
• Dropout Voltage (VDIF) ····················Typ. 0.23V (IOUT=300mA, VOUT=2.8V)
• Ripple Rejection (RR)·····················Typ. 65dB (f=1kHz)
• Input Voltage Range (VIN)···············1.4V to 6.0V
• Output Voltage Range (VOUT)··········0.8V to 3.3V (internally fixed)
• Output Voltage Accuracy ················± 2%
• Temp. coeff. of Output Voltage ·······Typ. ± 100ppm/°C
• Line Regulation·······························Typ. 0.01%/V
• Fold-back Protection Circuit············Current limit Typ. 50mA
• Auto-Discharge function ·················D Version
• Packages········································
SON-6, SOT-23-5 , HSON- 6
• Ceramic capacitors can be used. ···1μF or more (VOUT
>
=
1.0V)
BLOCK DIAGRAMS
R1131xxxxA
(CE pin "L" active)
V
OUT
GND
V
DD
CE
Vref
Current Limit
+
-
R1131xxxxB
(CE pin "H" active)
V
OUT
GND
V
DD
CE
Vref
Current Limit
+
-
R1131xxxxD
(With Auto-Discharge function)
V
OUT
GND
V
DD
CE
Vref
Current Limit
+
-
SELECTION GUIDES
Package Quantity per Reel Part No.
SON-6 3,000 pcs R1131D
.
xx
.
1
.
∗
-TR-F
SOT-23-5 3,000 pcs R1131N
.
xx
.
1
.
∗
-TR-F
HSON-6 3,000 pcs R1131D
.
xx
.
2
.
∗
-TR-F
.
xx
.
: Specify the output voltage within the range 0.8V (
.
08
.
) to 3.3V (
.
33
.
)
in 0.1V steps.
.
∗
.
: Select the polarity of the CE pin from (
.
A
.
) "L" active, (
.
B
.
) "H" active or
(
.
D
.
)
"H" active with auto-discharge function
.
PACKAGES (Top View) TYPICAL CHARACT ERISTIC
SON-6 SOT-23-5 HSON-6
6 5 4
1 2 3
∗
1 3
5 4
2
1 3
6 4
2
5
∗
1 VDD
2 NC
3 VOUT
4 NC
5 GND
6 CE or CE
1 VDD
2 GND
3 CE or CE
4 NC
5 VOUT
1 VDD
2 NC
3 VOUT
4 NC
5 GND
6 CE or CE
R1131x33xx Dropout Voltage vs. Output Current
0
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0 50 100 150 200 250 300
Dropout Voltage V
DIF
(V)
Output Current I
OUT
(mA)
85°C
25°C
-40°C
∗) The tab and tab suspension leads on back side are substrate level (GND).
APPLICATIONS
• Power source for hand-held com munication equipment, cameras, and VCRs
• Power source for home appliances • Power source for battery-powered equipment
