UNISONIC TECHNOLOGIES CO., LTD

LR3XXYYB

CMOS IC

www.unisonic.com.tw

1 of 8

Copyright © 2015 Unisonic Technologies Co., Ltd

QW-R125-002.H

150mA 2CH LDO REGULATOR



DESCRIPTION

The UTC LR3XXYYB are CMOS voltage regulator ICs that have

high output voltage accuracy, low dropout, low supply current, and

high ripple rejection. Every voltage regulator IC of UTC LR3XXYYB

series consists of an error amplifier, a voltage reference unit, a

current limit circuit, resistors for setting output voltage, and a chip

enable circuit.

Due to built-in transistor with low ON resistance and a chip

enable function these ICs perform with low dropout voltage prolongs

the battery life of each system. The load transient response and line

transient response of the UTC LR3XXYYB Series are excellent, so

these ICs are suitable for hand-held communication equipment

power supply.



FEATURES

* Low supply current: Typ. 60µA

* Standby mode:

Typ. 0.1µA

* Low dropout voltage

* High ripple rejection

* Low temperature-drift coefficient of output voltage

* Excellent line regulation

* High output voltage accuracy

* Output voltage stepwise setting with a step of 0.1V in the range of

1.5V ~ 3.3V is possible

* Built-in fold-back protection circuit Typ. 40mA

(current at short mode)

* Ceramic capacitor is recommended. (1.0µF or more)

SOT-26

4

5

3

2

1

6



ORDERING INFORMATION

Ordering Number

Package

Packing

LR3XXYYBG-AG6-R

SOT-26

Tape Reel

Note: XXYY: Output Voltage, refer to Marking Information.