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

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.

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




Technical Documentation

Product Specifications
Description Version Size
DB1267 DB1267: 1.5 A step-down switching regulator based on the L5972D 1.1 72 KB
Application Notes
Description Version Size
AN1517 AN1517: Designing with the STEVAL-ISA089V1 high efficiency DC-DC converter 3.0 1 MB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
STEVAL-ISA089V1 gerber files 2.1 92 KB
Bill of Materials
Description Version Size
BOM for STEVAL-ISA089V1 board 1.0 8 KB
Schematic Packs
Description Version Size
Board schematics for STEVAL-ISA089V1 board 1.0 68 KB


License Agreement
Description Version Size
Evaluation products license agreement 1.0 125 KB
Support & Community

Sample & Buy

Part Number Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors

(*) 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-ISA089V1 ActiveCARDIndustrialEcopack2

(**) The Material Declaration forms available on st.com 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.