STMicroelectronics Up to 3 A step-down switching regulator (Vin = 5.5 V to 48 V) based on the ST1S14 STEVAL-ISA104V1 STEVAL-ISA104V1 Data Sheet

For further information contact your local STMicroelectronics sales office.

August 2012

Doc ID 023540 Rev 1

1/4

4

Up to 3 A step-down switching regulator (Vin = 5.5 V to 48 V)

  based on the ST1S14

■

3 A DC output current

■

Operating input voltage from 5.5 V to 48 V

■

850 kHz internally fixed switching frequency

■

Internal soft-start

■

Internal current limiting

■

Inhibit for zero current consumption

■

2 mA maximum quiescent current 
overtemperature range

■

Thermal shutdown

■

RoHS compliant

The STEVAL-ISA104V1 is designed in order to 
evaluate the ST1S14, a step-down monolithic 
power switching regulator able to deliver up to 3 
A; this high current level is also achieved thanks 
to a HSOP8 package with exposed frame. 

The output voltage can be set from 1.22 V. 

An internal oscillator fixes the switching frequency 
at 850 kHz. 

Power Good open collector output validates the 
regulated output voltage as soon as it reaches the 
regulation. 

Pulse-by-pulse current limit offers an effective 
constant current short-circuit protection while the 
current foldback decreases overstress in 
persistent short-circuit condition.