UNISONIC TECHNOLOGIES CO., LTD

LR1108

CMOS IC

www.unisonic.com.tw

1 of 6

Copyright © 2007 Unisonic Technologies Co., Ltd

QW-R102-031.B

1A FAST ULTRA LOW

DROPOUT LINEAR

REGULATOR

DESCRIPTION

The UTC LR1108 operate from a +2.5V ~ +7.0V input supply as

fast ultra low-dropout linear regulators. Wide output voltage range

options are available. The fast response characteristic to make

UTC LR1108 suitable for low voltage microprocessor application.

The low quiescent current operation and low dropout quality

caused by the CMOS process.

The UTC LR1108 has ultra low dropout voltage; 300mV at

600mA load current typically.

The ground pin current is typically 200uA at 1mA load current.

ERROR Flag: When the output voltage drops 10% below

nominal value Error flag goes low.

Output Voltage Precision: Multiple output voltage options are

available and ranging from 1.2V ~ 5.0V at room temperature with a

guaranteed accuracy of ±1.5%, and ±3.0% when varying line, load

and temperature.

FEATURES

* Ultra low dropout voltage

* Low ground pin current

* 0.04% load regulation

* The guaranteed output current is 1A DC

* Output voltage accuracy ± 1.5%

* ERROR flag indicates output status

* Low output capacitor required

* Overtemperature protection and overcurrent protection

SOT-25

4

5

3

2

1

1

SOT-89

*Pb-free plating product number: LR1108L

ORDERING INFORMATION

Ordering Number

Pin Assignment

Normal

Lead Free Plating

Package

1

2

3

4

5

Packing

LR1108-xx-AB3-A-R

LR1108L-xx-AB3-A-R

SOT-89

G

O

I

-

-

Tape Reel

LR1108-xx-AB3-C-R

LR1108L-xx-AB3-C-R

SOT-89

G

I

O

-

-

Tape Reel

LR1108-xx-AF5-R

LR1108L-xx-AF5-R

SOT-25

I

G

O

Tape Reel