ST Life.augmented


1.5 A step down switching regulator (Vin=4 to 36 V, Vout=1.235 to Vin) based on L5972D
  • active Active

The STEVAL-ISA089V1 demonstration board provides a platform for evaluation of the L5972D, a step-down monolithic power switching regulator with a minimum switch current limit of 2 A capable of delivering more than 1.5 A of DC current to the load depending on application conditions.

The input supply voltage of the STEVAL-ISA089V1 can range from 4.4 V to 25 V based on the rated voltage of the input capacitor, while the output voltage is adjustable from 1.235 V to VCC.

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Data Brief

Key Features

  • Max output current: 1.5 A
  • Output voltage from 1.235 V to 35 V
  • Operating input voltage from 4.4 V to 36 V
  • Internal switching frequency: 250 kHz
  • Synchronization pin for cases where a higher frequency (up to 500 kHz) is required
  • Short-circuit protection
  • Inhibit pin
  • Thermal shutdown
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1267: 1.5 A step-down switching regulator based on the L5972D
1.1 73 KB

Application Notes

Description Version Size
AN1517: Designing with the STEVAL-ISA089V1 high efficiency DC-DC converter
3.0 1,154 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-ISA089V1 gerber files
2.1 93 KB

Bill of Materials

Description Version Size
BOM for STEVAL-ISA089V1 board
1.0 9 KB

Schematic Pack

Description Version Size
Board schematics for STEVAL-ISA089V1 board
1.0 69 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA089V1ActiveL5972D-42Distributor reported inventory date: 2016-02-13
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA30

(*) 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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