February 2016

DocID029028 Rev 1

1/4

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STEVAL-ISA160V1

3 A / 2.3 MHz step-down synchronous switching regulator based

on the AST1S31HF in a DFN 3x3 package

Data brief

Features



AECQ100 qualification



3 A DC output current



2.8 V to 4 V input voltage



Output voltage adjustable from 0.8 V



2.3 MHz switching frequency



Internal soft-start and enable



Integrated 70 mΩ and 55 mΩ power

MOSFETs



All ceramic capacitor



Power good (POR)



Cycle by cycle current limiting



Current fold back short circuit protection



VFDFPN 3x3 - 8L package



RoHS compliant

Description

The STEVAL-ISA160V1 evaluation board is

based on the AST1S31HF internally

compensated 2.3 MHz fixed-frequency PWM

synchronous step-down regulator.

The device operates on a 2.8 V to 4.0 V input

voltage and provides a regulated output voltage

from as low as 0.8 V up to Vin.

The peak current mode control with internal

compensation delivers a very compact solution

with a minimum component count.

All the components on the evaluation board are

automotive grade.