UNISONIC TECHNOLOGIES CO., LTD

L1127/A/E

Preliminary

CMOS IC

www.unisonic.com.tw

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Copyright © 2022 Unisonic Technologies Co., Ltd

QW-R502-742.e

ULTRA-LOW-NOISE,

HIGH-SPEED, LOW-DROPOUT,

300mA LINEAR REGULATOR



DESCRIPTION

As a low dropout linear regulator, the UTC L1127/A/E only needs

low input voltage (2.5~6V), and can deliver current to 300mA for

setting the output voltage.

The UTC L1127/A/E is ideal for being used in such as

battery-powered equipments notebook, personal computer and

mother board. Its typical dropout voltage is 230mV at loading current

300mA.

L1127/A/E

has 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.3V, 4.2V,

4.75V, fixed voltage versions and 0.8V to 5.5V adjustable voltage

versions.

ERROR Flag (L1127E): ERROR Flag goes low when the

output voltage drops 10% below nominal value .

ADJ/SET (L1127A): Connect ADJ/SET to GND for Preset output;

Connect an external resistive voltage-divider from OUT to GND to set

the out voltage between 0.8V and 5.5V.



FEATURES

* Operating Voltage: 2.5V~6V

* Low Voltage Dropout

* Output Current Guaranteed 300mA

* For Setting Output Voltage Two Modes

-

Fixed mode : 1.0V,1.2V,1.5V,1.8V, 2.5V, 3.0V, 3.3V,

4.2V, 4.75V

-

ADJ mode: Adjustable Output Voltage 0.8V~5.5V

* ERROR Flag Indicates Output Status

* Internal Current Limit Protection

* Internal Soft-Start

* Internal Thermal Protection

* Work Stably with Low ESR Ceramics Capacitor



ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

L1127L-xx-AF5-R

L1127G-xx-AF5-R

SOT-25

Tape Reel

L1127AL-xx-AF5-R

L1127AG-xx-AF5-R

L1127EL-xx-AF5-R

L1127EG-xx-AF5-R

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