300mA SELECTABLE FIXED/ADJUSTABLE LOW DROPOUT LINEAR REGULATOR

DESCRIPTION

As a low dropout linear regulator, the UTC LR2128 only needs

low input voltage (2.7~6V) and can deliver current to 300mA for

setting the output voltage.

The UTC LR2128 is an ideal for being used in such

battery-powered equipments notebook, personal computer and

cellular phone. Its typical dropout voltage is 230mV at loading

current 300mA.

For setting the output voltage, the UTC LR2128 has two

output voltage operation modes: fixed mode senses the output

voltage on VOUT, ADJ mode needs two resistors as a voltage

divider.

To protect itself against current over-loads and over

temperature, the UTC LR2128 has current limit and thermal

shutdown functions.

FEATURES

* Operating Voltage: 2.7~6V

* Low Voltage Dropout

* Output Current Guaranteed 300mA

* For Setting Output Voltage Two Modes

-Fixed mode :Fixed Output Voltage 1~5V

-ADJ mode: Adjustable Output Voltage 0.8~5.5V

* Internal Current Limit Protection

* With Soft-Start

* Internal thermal Protection

* Work stably with Low ESR Ceramics Capacitor