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S-1112

Part Number	S-1112
Manufacturer	Seiko Instruments
Description	HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Published	May 13, 2009
Detailed Description	S-1112/1122 Series www.sii-ic.com © Seiko Instruments Inc., 2002-2015 HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTA...
Datasheet	S-1112 PDF File

Overview

S-1112/1122 Series www.
sii-ic.
com © Seiko Instruments Inc.
, 2002-2015 HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.
6.
1_00 The S-1112/1122 Series is a positive voltage regulator with a low dropout voltage, high-accuracy output voltage, and low current consumption developed based on CMOS technology.
A built-in low on-resistance transistor provides a low dropout voltage and large output current, and a built-in overcurrent protection circuit prevents the load current from exceeding the current capacity of the output transistor.
An ON/OFF circuit ensures a long battery life.
Compared with the voltage regulators using the conventional CMOS technology, a larger variety of capacitors are available, including small ceramic capacitors.
Small SNT-6A(H) (S-1112 Series only) and SOT-23-5 packages realize high-density mounting.
In SOT-23-5, the lineup includes the S-1112 and S-1122 Series, which differ in pin configuration.
 Features • Output voltage: • Output voltage accuracy: • Dropout voltage: • Current consumption: • Output current: • Output capacitor: • Ripple rejection: • Built-in overcurrent protection circuit: • Built-in ON/OFF circuit: • Operation temperature range: • Lead-free, Sn 100%, halogen-free*2 1.
5 V to 5.
5 V, selectable in 0.
1 V step ±1.
0% 190 mV typ.
(3.
0 V output product, IOUT = 100 mA) During operation: 50 μA typ.
, 90 μA max.
During power-off: 0.
1 μA typ.
, 1.
0 μA max.
Possible to output 150 mA (VIN ≥ VOUT(S) + 1.
0 V)*1 A ceramic capacitor of 0.
47 μF or more can be used.
80 dB typ.
(f = 1.
0 kHz) Limits overcurrent of output transistor.
Ensures long battery life.
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 personal communication device • Constant-voltage power supply for home electric/electronic ...

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