Datasheet

For further information contact your local STMicroelectronics sales office.
August 2012 Doc ID 023540 Rev 1 1/4
4
STEVAL-ISA104V1
Up to 3 A step-down switching regulator (Vin = 5.5 V to 48 V)
based on the ST1S14
Data brief
Features
■ 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
Description
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.
www.st.com