UNISONIC TECHNOLOGIES CO., LTD

L1131A

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 5

Copyright © 2013 Unisonic Technologies Co., Ltd

QW-R502-A41.b

LOW NOISE 150mA LDO

REGULATOR



DESCRIPTION

The UTC L1131A is a COMS positive linear regulator. One of

it’s feature is the very low quiescent current typical as low as 10μA

and its dropout voltage is extremely low with 150mA output current,

and high ripple rejection. Each of these ICs consists of a voltage

reference unit, an error amplifier, resistor-net for voltage setting, a

short current limit circuit, a chip enable circuit, and so on.

These ICs perform with low dropout voltage and the chip-enable

function. The supply current at no load of this IC is only 10μA, and

the line transient response and the load transient response of the

UTC L1131A Series are excellent, thus these ICs are very suitable

for the power supply for hand-held communication equipment.

The output voltage of these ICs is fixed with high accuracy.

Since the packages for these ICs are SOT-23-5 therefore high

density mounting of the ICs on boards is possible.



FEATURES

* Low supply current Typ. 10μA

* Standby mode Typ. 0.1μA

* Output Voltage Range 1.2V~5.0V

* Excellent line regulation Typ. 0.02%/V

* Built-in fold back protection circuit

* Ceramic capacitors are recommended to be used with this IC



ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

L1131AL-xx-AF5-R

L1131AG-xx-AF5-R

SOT-25

Tape Reel

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