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STEVAL-ISA090V1

3.5 A step down switching regulator (Vin=8 to 55 V) based on L4973
  • active Active

The STEVAL-ISA090V1 demonstration board provides a platform for evaluation of the L4973, a 3.5 A step-down monolithic power switching regulator operating in continuous mode.

Based on the selection of the external components, the device can operate in the entire input voltage range of 8 V < VIN< 55 V. The output voltage is limited by the voltage rating of the output capacitor, so it can be adjusted within the 3.3 V < VOUT< 30 V range through voltage divider R3, R4. The input and output capacitors are capable of sustaining the RMS current within the operating range.

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Data Brief

Key Features

  • Input voltage range: 8 V to 55 V
  • Output voltage: 5.1 V ± 3% (line, load and thermal)
  • Output ripple: 51 mV
  • Output current range: 1 mA to 3.5 A
  • Max output ripple current: 30%
  • Current limit: 4.5 A
  • Switching frequency: 150 kHz
  • RoHS compliant

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Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DB1266: 3.5 A step-down switching regulator based on the L4973
1.1 177 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
zip
STEVAL-ISA090V1 gerber files
2.0.0 100 KB

Bill of Materials

Description Version Size
pdf
BOM for STEVAL-ISA090V1 board
1.0.0 11 KB

Schematic Pack

Description Version Size
pdf
Board schematics for STEVAL-ISA090V1 board
1.0.0 57 KB

Sample & Buy

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Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA090V1ActiveL4973-Distributor reported inventory date: 2014-04-17
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA40
P&SOrder NowASIA/PACIFIC11
DIGIKEYOrder NowWORLDWIDE41
Ecopack2-

(*) 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 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.
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