1.5A ULTRA LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START

DESCRIPTION

The UTC LR1815 is a typical LDO that features a

user-programmable soft-start, very low dropout voltage as low as

0.15V at output current 1.5A, an enable input and a power-good

output.

The soft-start reduces inrush current of the load capacitors and

minimizes stress on the input power source during start-up. An

enable pin to further reduce power dissipation while shutdown. And

power-good output indicates the output voltage status.

The UTC LR1815 is stable with any type of output capacitor of

2.2µF or more. A precision reference and feedback control deliver

2% accuracy over load, line, and operating temperature ranges.

FEATURES

* Low VIN and wide VIN range: 1.0V~5.5V

* Bias voltage (VVCC) range: 2.7V~5.5V

* Low VOUT range: 0.8V~3.3V

* 150mV dropout @1.5A, VVCC=5V

* 2% output Voltage

* Power-Good (PG) output

* Programmable soft-start provides linear voltage startup

* Stable with any output capacitor≥2.2µF