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ABLIC Electronic Components Datasheet

S-1137 Datasheet

CMOS VOLTAGE REGULATOR

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S-1137 Series
www.ablic.com
© ABLIC Inc., 2009-2018
5.5 V INPUT, 300 mA VOLTAGE REGULATOR
WITH SOFT-START FUNCTION
Rev.2.2_00
The S-1137 Series, developed using the CMOS technology, is a positive voltage regulator IC which has the low dropout
voltage, the high-accuracy output voltage and the soft-start function (300 mA output current).
A 1.0 μF small ceramic capacitor can be used. It operates with low current consumption of 45 μA typ.
The overcurrent protection circuit prevents the load current from exceeding the current capacity of the output transistor.
The ON / OFF circuit ensures longer battery life.
Compared to the conventional CMOS technology regulator ICs, various capacitors including small ceramic capacitors can be
used for this IC.
Furthermore, small SOT-89-5, SOT-23-5, and SNT-6A(H) packages realize high-density mounting.
Features
Output voltage:
Input voltage:
Output voltage accuracy:
Dropout voltage:
Current consumption:
Output current:
Input and output capacitors:
Ripple rejection:
Built-in soft-start circuit:
Built-in overcurrent protection circuit:
Built-in ON / OFF circuit:
Operation temperature range:
Lead-free, Sn 100%, halogen-free*2
1.2 V to 3.5 V, selectable in 0.05 V step
1.7 V to 5.5 V
±1.0% (1.2 V to 1.45 V output product : ±15 mV)
210 mV typ. (2.8 V output product, IOUT = 300 mA)
During operation: 45 μA typ., 65 μA max.
During power-off: 0.1 μA typ., 1.0 μA max.
Possible to output 300 mA (VIN VOUT(S) + 1.0 V)*1
A ceramic capacitor of 1.0 μF or more can be used.
70 dB typ. (f = 1.0 kHz)
Soft-start time : 0.7 ms typ. (CSS = 1.0 nF)
Limits overcurrent of output transistor.
Ensures long battery life.
Discharge shunt function “available” / “unavailable” is selectable.
Pull-down function “available” / “unavailable” is selectable.
Ta = 40°C to +85°C
*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
Constant-voltage power supply for battery-powered device
Constant-voltage power supply for cellular phone, portable device
Constant-voltage power supply for digital still camera, TV, DVD recorder
Packages
SOT-89-5
SOT-23-5
SNT-6A(H)
1


ABLIC Electronic Components Datasheet

S-1137 Datasheet

CMOS VOLTAGE REGULATOR

No Preview Available !

5.5 V INPUT, 300 mA VOLTAGE REGULATOR WITH SOFT-START FUNCTION
S-1137 Series
Rev.2.2_00
Block Diagrams
1. S-1137 Series A type
VIN
Overcurrent
protection circuit
*1
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Status
Active “H”
Available
Available
ON / OFF
SSC
ON / OFF
circuit
Soft-start
circuit
+
Reference
voltage circuit
*1
*1
VSS
*1. Parasitic diode
Figure 1
2. S-1137 Series B type
VIN
Overcurrent
protection circuit
*1
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Status
Active “H”
Available
Unavailable
ON / OFF
SSC
ON / OFF
circuit
Soft-start
circuit
+
Reference
voltage circuit
*1
*1
VSS
*1. Parasitic diode
Figure 2
2


Part Number S-1137
Description CMOS VOLTAGE REGULATOR
Maker ABLIC
Total Page 30 Pages
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