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4 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S32 in DFN 4x4 package
  • active Active

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 Vin.

The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.

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Data Brief

Key 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


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1615: 4 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S32 in DFN 4x4 package
1.0 337 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-ISA068V1 gerber files
1.0 128 KB

Bill of Materials

Description Version Size
1.0 39 KB

Schematic Pack

Description Version Size
STEVAL-ISA068V1 schematics
1.0 22 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA068V1ActiveST1S32Buy Direct51.45Distributor reported inventory date: 2016-02-07
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA30
Farnell Element14Order NowEUROPE21

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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