UNISONIC TECHNOLOGIES CO., LTD

L1131C

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 6

Copyright © 2011 Unisonic Technologies Co., Ltd

QW-R502-308.c

LOW NOISE 150mA LDO

REGULATOR

DESCRIPTION

The UTC L1131C is a typical LDO (linear regulator) with the

features of High output voltage accuracy, low supply current, low

ON-resistance, and high ripple rejection.

During normal operation of UTC L1131C, the dropout voltage is

very low, and the response of line transient and load transient are

very well.

Inside each UTC L1131C, there’re many functions which can be

seen in the block figure, for example, a voltage reference unit, an

error amplifier, resistor-net for voltage setting, a current limit circuit,

and a chip enable circuit.

The UTC L1131C can be used as an ideal of power source for

hand-held communication equipment, such as cameras, VCRs,

camcorders and other battery-powered equipment.

FEATURES

* Ultra Supply Current: 75µA(typ.)

* Standby Mode: 0.1µA(typ.)

* Ripple Rejection: 70dB(typ.)@f=1kHz

60dB(typ.)@f=10kHz

* Temperature-Drift Coefficient

of Output Voltage: ±100ppm/°C(typ.)

* Well Line Regulation: 0.02%/V(typ.)

* Output Voltage Accuracy: ±2.0%(typ.)

* Internal Fold Back Protection Circuit

be used with this IC

ORDERING INFORMATION

Ordering Number

Package

Pin Assignment

Packing

Lead Free

Halogen Free

1234

5

L1131CL-xx-AF5-R

L1131CG-xx-AF5-R

SOT-25

I

G

C

N

O

Tape Reel