S-1137 Datasheet PDF - ABLIC


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S-1137
ABLIC

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

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S-1137 Series
www.ablicinc.com
© ABLIC Inc., 2009-2015
HIGH RIPPLE-REJECTION LOW DROPOUT
SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.2.1_02
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 F small ceramic capacitor can be used. It operates with low current consumption of 45 A 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:
Pull-down resistor is selectable.
Discharge shunt function is selectable.
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 A typ., 65 A max.
During power-off: 0.1 A typ., 1.0 A max.
Possible to output 300 mA (VIN VOUT(S) 1.0 V)*1
A ceramic capacitor of 1.0 F 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.
Ta = 40C to 85C
*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)
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HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
S-1137 Series
Rev.2.1_02
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
None
ON / OFF
SSC
ON / OFF
circuit
Soft-start
circuit
Reference
voltage circuit
*1
*1
VSS
*1. Parasitic diode
Figure 2
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HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.2.1_02
S-1137 Series
3. S-1137 Series C type
VIN
Overcurrent
protection circuit
*1
ON / OFF
SSC
ON / OFF
circuit
Soft-start
circuit
Reference
voltage circuit
*1
VSS
*1. Parasitic diode
Figure 3
4. S-1137 Series D type
VIN
Overcurrent
protection circuit
*1
ON / OFF
SSC
ON / OFF
circuit
Soft-start
circuit
Reference
voltage circuit
*1
VSS
*1. Parasitic diode
Figure 4
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Status
Active “H”
None
Available
VOUT
Function
ON / OFF logic
Discharge shunt
function
Pull-down resistor
Status
Active “H”
None
None
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HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
S-1137 Series
Rev.2.1_02
Product Name Structure
Users can select the product type, output voltage, and package type for the S-1137 Series. Refer to “1. Product
name” regarding the contents of product name, “2. Function list of product type” regarding the product type,
3. Packages” regarding the package drawings.
1. Product name
(1) SOT-89-5
S-1137 x xx - U5T1 x
Environmental code
U: Lead-free (Sn 100%), halogen-free
G: Lead-free (for details, please contact our sales office)
Package abbreviation and IC packing specifications*1
U5T1: SOT-89-5, Tape
Output voltage*2
12 to 35
(e.g., when the output voltage is 1.2 V, it is expressed as 12.)
Product type*3
A to D
*1. Refer to the tape drawing.
*2. If you request the product which has 0.05 V step, contact our sales office.
*3. Refer to “2. Function list of product type”.
(2) SOT-23-5
S-1137 x xx - M5T1 x
Environmental code
U: Lead-free (Sn 100%), halogen-free
S: Lead-free, halogen-free
Package abbreviation and IC packing specifications*1
M5T1: SOT-23-5, Tape
Output voltage*2
12 to 35
(e.g., when the output voltage is 1.2 V, it is expressed as 12.)
Product type*3
A to D
*1. Refer to the tape drawing.
*2. If you request the product which has 0.05 V step, contact our sales office.
*3. Refer to “2. Function list of product type”.
4




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