UNISONIC TECHNOLOGIES CO., LTD

LR1125

CMOS IC

www.unisonic.com.tw

1 of 7

Copyright © 2010 Unisonic Technologies Co., Ltd

QW-R502-416.A

500mA, LOW-VOLTAGE

LINEAR REGULATOR

DESCRIPTION

The UTC LR1125 is a positive LDO (voltage linear regulator)

operates from a 2.25V ~ 5.5V supply and delivers a guaranteed

500mA load current with low 175mV dropout. Low dropout voltage

and large output current can be provided by built-in low

on-resistance transistor. Because an internal PMOS pass transistor

allows low 210µA supply current, the LR1125 can be ideal for

portable equipment such as PDAs, cellular phones, cordless

phones, and other equipments including base stations and docking

stations. It also includes an active-low, power-OK output that mean

a

0.02µA

shutdown

mode,

short-circuit

protection

and

thermal-shutdown protection when the output is out of regulation.

FEATURES

* Low Dropout : 175mV Dropout at 500mA

* High accuracy output voltage: +/- 1.5%

* Guaranteed Output:500mA

* Thermal-Overload Protection

* Internal Current Limiting

* Low 210µA Ground Current

* 0.02µA Shutdown Current

ORDERING INFORMATION

Ordering Number

Package

Packing

LR1125G-S08-R

SOP-8

Tape Reel

LR1125G-SM1-R

MSOP-8

Tape Reel