L1803

DESCRIPTION 

The UTC L1803 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 L1803 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