3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in SO-8 package

The STEVAL-ISA070V1 demonstration board is based on the ST1S31, 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.

Key Features

  • 4 A peak 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

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Design

Technical Documentation

Product Specifications
Description Version Size
DB1617 DB1617: 3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in SO-8 package 1.0 294 KB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
STEVAL-ISA070V1 gerber files 1.0 130 KB
Bill of Materials
Description Version Size
STEVAL-ISA070V1 BOM 2.0 7 KB
Schematic Packs
Description Version Size
STEVAL-ISA070V1 schematics 1.0 26 KB

Legal

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
STEVAL-ISA070V1 ST1S32 Active 37 1 NEC EAR99 ITALY MORE INFO DISTRIBUTOR AVAILABILITY
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(*) 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-ISA070V1 ActiveCARDIndustrialEcopack2
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(**) 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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