3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in DFN 3x3 package

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  • The STEVAL-ISA069V1 demonstration board is based on the ST1S31, which is 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
    • From 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 capacitors
    • Power Good (POR)
    • Cycle-by-cycle current limiting
    • Current foldback short-circuit protection
    • RoHS compliant

Sample & Buy

Part Number
Core Product
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Board production status
Order from Distributors
Order from ST
STEVAL-ISA069V1 ST1S31
Active
55.0 1 EAR99 ITALY - Check Availability

Distributor availability ofSTEVAL-ISA069V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2 1 Order Now
P&S ASIA/PACIFIC 1 1 Order Now
MOUSER WORLDWIDE 2 1 Order Now

Distributor reported inventory date: 2019-11-15

Distributor Name

DIGIKEY

Stock

2

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

1

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

2

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-15

Buy now

STEVAL-ISA069V1

Core Product

ST1S31

Marketing Status

Active

Unit Price (US$)

55.0*

Distributor availability ofSTEVAL-ISA069V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2 1 Order Now
P&S ASIA/PACIFIC 1 1 Order Now
MOUSER WORLDWIDE 2 1 Order Now

Distributor reported inventory date: 2019-11-15

Distributor Name

DIGIKEY

Stock

2

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

1

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

2

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-15

Unit Price (US$)

55

Quantity

1

ECCN (US)

EAR99

Country of Origin

ITALY

Board production status

-

(*) 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

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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DB1572
      3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in DFN 3x3 package
      1.1
      275.63 KB
      PDF
      DB1572

      3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in DFN 3x3 package

Hardware Resources

    • Description Version Size Action
      STEVAL-ISA069V1 gerber files 1.0
      76.59 KB
      ZIP

      STEVAL-ISA069V1 gerber files

    • Description Version Size Action
      STEVAL-ISA069V1 BOM 1.0
      36.98 KB
      PDF

      STEVAL-ISA069V1 BOM

    • Description Version Size Action
      STEVAL-ISA069V1 schematics 1.0
      26.88 KB
      PDF

      STEVAL-ISA069V1 schematics

Publications and Collaterals

    • Description Version Size Action
      eDesignSuite-The smart way to design your application 1.0
      842.88 KB
      PDF

      eDesignSuite-The smart way to design your application

Legal

    • Description Version Size Action
      Evaluation products license agreement 1.6
      74.12 KB
      PDF

      Evaluation products license agreement

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-ISA069V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA069V1

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) 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.