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