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| L1138_11 Datasheet, PDF (1/7 Pages) Unisonic Technologies – HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH HIGH RIPPLE-REJECTION | |||
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UNISONIC TECHNOLOGIES CO., LTD
L1138
Preliminary
HIGH OUTPUT CURRENT CMOS
VOLTAGE REGULATOR WITH
HIGH RIPPLE-REJECTION AND
LOW DROPOUT
CMOS IC
SOP-8
 DESCRIPTION
The UTC L1138 is a positive LDO voltage regulator using CMOS
technology. It is featured as: low dropout voltage, high output voltage
accuracy, and low current consumption.
The internal circuits include a low on-resistance transistor to provide a
low dropout voltage and large output current; an overcurrent protector to
make sure the load current donât exceed the current capacitance of the
output transistor, a thermal shutdown circuit to escape device damage
from over-heat, and an ON/OFF circuit to keep the battery life longer.
In applications, the UTC L1138 can be used in power supply unit for
DVD, CD-ROM drives, battery-powered devices, personal communication
devices, and NBs.
1
SOT-89-5
 FEATURES
* Output voltageâs high accuracy: ±1.0%
* Low dropout voltage:
120mV typ.
@3.0V output , IOUT=300mA
* Low current consumption:
80μA(Typ.)160μA max in operation
0.1μA(Typ.)1.0μA max in shutdown mode
* High current capability:
800mA output
@VINâ¥VOUT(S)+1.0V
* With ON/OFF circuit:
Ensures long battery life.
* Low ESR capacitor can be used: at least a 4.7μF ceramic capacitor for the output capacitor.
* High ripple rejection
70dB typ@1.0kHz
* With over current protector
* With thermal shutdown circuit
 ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
L1138L-xx-AB5-R
L1138G-xx-AB5-R
L1138L-xx-S08-R
L1138G-xx-S08-R
xx: Output Voltage, refer to Marking Information.
Package
SOT-89-5
SOP-8
Packing
Tape Reel
Tape Reel
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
1 of 7
QW-R502-323.d
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