STAR5011

Description

STAR5011 is a high voltage low dropout regulator (LDO) capable of converting 8 to 14.1 V input down to 5.5 to 12 V output in a 180nm 32V BCD process. The LDO is configurable with 4 bit digital input, which selects output voltage linearly. STAR5011 is capable of up to 15mA of output with external capacitor of 2.3uF The regulator is fully integrated with biasing circuitry, requiring only a 1.25 bandgap voltage. The architecture of LDO is simple, with single stage current mirror operational amplifier in a feedback loop. With sufficient gain and phase margin of the opamp, the regulator is stable with 1% output voltage accuracy. The regulator has a 20 dB PSRR across wide range of frequency, from DC to 100 MHz.

Features

• Large and flexible input supply voltage from 8V to 14.1V

• Wide output voltage range configurable from 5.5V to 12V

• Operating temperature from -40C to 125C

• Supports up to 15mA output current

• Quiescent current of 30uA (Typical)

• >20 dB PSRR below 100 MHz

• Able to power down to have output of 0V

• Integrated biasing circuits

• Simple current mirror operational amplifier for reliable regulation

• 180nm 32V BCD process

Applications

• LED Drivers

• Sensor Supply