UNISONIC TECHNOLOGIES CO., LTD

L1131B

CMOS IC

www.unisonic.com.tw

1 of 9

Copyright © 2024 Unisonic Technologies Co., Ltd

QW-R502-C03.I

LOW NOISE 200mA LDO

REGULATOR



DESCRIPTION

The UTC L1131B is a COMS positive linear regulator. One of

it’s feature is the very low quiescent current typical as low as 1.5μA

and its dropout voltage is extremely low with 200mA 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 1.5μA, and the line transient response and the load transient

response of the UTC L1131B Series are excellent, thus these ICs

are

very

suitable

for

the

power

supply

for

hand-held

communication equipment.



FEATURES

* Low supply current Typ. 1.5μA

* Standby mode Typ. 0.1μA

* Output Voltage Range 1.2V ~ 5.0V

* Built-in fold back protection circuit

* Ceramic capacitors are recommended to be used with this IC

CIN=COUT=1μF

SOT-23

(EIAJ SC-59)

2

3

1

SOT-89

1

SOT-25

(JEDEC MO-178)

1

3

5

2

4

SOT-23-5

(JEDEC TO-236)

1

3

5

2

4



ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

L1131BL-xx-AB3-R

L1131BG-xx-AB3-R

SOT-89

Tape Reel

L1131BL-xx-AE3-R

L1131BG-xx-AE3-R

SOT-23

Tape Reel

L1131BL-xx-AE5-R

L1131BG-xx-AE5-R

SOT-23-5

Tape Reel

L1131BL-xx-AF5-R

L1131BG-xx-AF5-R

SOT-25

Tape Reel

L1131BL-xx-AE5-F-R

L1131BG-xx-AE5-F-R

SOT-23-5

Tape Reel

L1131BL-xx-AF5-F-R

L1131BG-xx-AF5-F-R

SOT-25

Tape Reel

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