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June 2012 Doc ID 023047 Rev 1 1/4
4
STEVAL-ISA068V1
4 A / 1.5 MHz step-down synchronous switching regulator based on
the ST1S32 in DFN 4x4 package
Data brief
Features
■ 4 A DC output current
■ 2.8 V to 5.5 V input voltage
■ Output voltage adjustable from 0.8 V
■ 1.5 MHz switching frequency
■ Internal soft-start and enable
■ Integrated 60 mΩ and 45 mΩ power MOSFETs
■ All ceramic capacitor
■ Power Good (POR)
■ Cycle-by-cycle current limiting
■ Current foldback short-circuit protection
■ RoHS compliant
Description
The STEVAL-ISA068V1 is based on the ST1S32,
an internally compensated 1.5 MHz fixed-
frequency PWM synchronous step-down
regulator.
This device operates from 2.8 V to 5.5 V input,
while it regulates an output voltage as low as
0.8 V and up to V
in
.
The peak current mode control with internal
compensation delivers a very compact solution
with a minimum component count.
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