3 A step-down switching power supply demonstration board based on the L7981 (HSOP8)

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  • The STEVAL-ISA094V1 is a step-down switching power supply based on STMicroelectronics’ L7981 switching regulator in an HSOP8 package.

    The L7981 features an embedded power MOSFET and is capable of delivering up to 3 A of current to the load, depending on the application conditions.
    The input voltage can range from 4.5 V to 28 V, while the output voltage can be set from 0.6 V to VIN.
    Requiring a minimum number of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.

    Key Features

    • 3 A DC output current
    • 4.5 V to 28 V input voltage
    • Output voltage adjustable from 0.6 V
    • 250 kHz switching frequency, programmable up to 1 MHz
    • Internal soft-start and enable
    • Low dropout operation: 100% duty cycle
    • Voltage feed-forward
    • Zero load current operation
    • Overcurrent and thermal protection
    • RoHS compliant

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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-ISA094V1 L7981A
Active
33 1 EAR99 ITALY - Check Availability

Distributor availability ofSTEVAL-ISA094V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 19 1 Order Now
P&S ASIA/PACIFIC 1 1 Order Now
Farnell Element14 EUROPE 4 1 Order Now

Distributor reported inventory date: 2019-10-16

Distributor Name

DIGIKEY

Stock

19

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

1

Min.Order

1

Region

ASIA/PACIFIC Order Now

Farnell Element14

Stock

4

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-16

STEVAL-ISA094V1

Core Product

L7981A

Marketing Status

Active

Unit Price (US$)

33.0*

Distributor availability ofSTEVAL-ISA094V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 19 1 Order Now
P&S ASIA/PACIFIC 1 1 Order Now
Farnell Element14 EUROPE 4 1 Order Now

Distributor reported inventory date: 2019-10-16

Distributor Name

DIGIKEY

Stock

19

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

1

Min.Order

1

Region

ASIA/PACIFIC Order Now

Farnell Element14

Stock

4

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-16

Unit Price (US$)

33

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
      DB1507
      3 A step-down switching power supply demonstration board based on the L7981 (HSOP8)
      1.1
      80.92 KB
      PDF
      DB1507

      3 A step-down switching power supply demonstration board based on the L7981 (HSOP8)

Hardware Resources

    • Description Version Size Action
      STEVAL-ISA094V1 gerber files 2.1
      30.92 KB
      ZIP

      STEVAL-ISA094V1 gerber files

    • Description Version Size Action
      STEVAL-ISA094V1 BOM 1.0
      14.76 KB
      PDF

      STEVAL-ISA094V1 BOM

    • Description Version Size Action
      STEVAL-ISA094V1 schematics 1.0
      38.01 KB
      PDF

      STEVAL-ISA094V1 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-ISA094V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA094V1

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.