STEVAL-ISA108V1

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4 A, 850 kHz fixed-frequency PWM synchronous step-down demostration board based on the ST1S41 in a VFQFPN package

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  • Based on the ST1S41 step-down switching regulator, the STEVAL-ISA108V1 demonstration board is an internally-compensated 850 kHz fixed-frequency PWM synchronous step-down converter.

    The ST1S41 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN(100% duty cycle).
    The ST1S41 integrates a 95 mΩ high side switch and 69 mΩ low side synchronous rectifier, resulting in very high efficiency with very low output voltages.
    The peak current mode control with internal compensation offers a compact solution with a minimum component count.

    Key Features

    • 4 to 18 V input voltage
    • Output voltage adjustable from 0.8 V
    • 850 kHz switching frequency
    • Internal soft-start
    • Integrated 95 mΩ and 69 mΩ power MOSFETs
    • All ceramic capacitor
    • Enable function
    • Cycle-by-cycle current limiting
    • Current fold-back short-circuit protection
    • RoHS compliant

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Technical Documentation

    • Description Version Size Action
      DB1883
      4 A, 850 kHz fixed-frequency PWM synchronous step-down demostration board based on the ST1S41 in a VFQFPN package
      1.0
      136.3 KB
      PDF
      DB1883

      4 A, 850 kHz fixed-frequency PWM synchronous step-down demostration board based on the ST1S41 in a VFQFPN package

Hardware Resources

    • Description Version Size Action
      STEVAL-ISA108V1 gerber files 1.0
      185.81 KB
      ZIP

      STEVAL-ISA108V1 gerber files

    • Description Version Size Action
      STEVAL-ISA108V1 BOM 1.1
      53.69 KB
      PDF

      STEVAL-ISA108V1 BOM

    • Description Version Size Action
      STEVAL-ISA108V1 schematics 3.0
      82.99 KB
      PDF

      STEVAL-ISA108V1 schematics

Publications and Collaterals

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      eDesignSuite-The smart way to design your application 1.0
      842.88 KB
      PDF

      eDesignSuite-The smart way to design your application

Legal

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      Terms of use 1.7
      57.54 KB
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      Terms of use

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-ISA108V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA108V1

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.

Sample & Buy

Part Number
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Core Product
Marketing Status
Supplier
ECCN (US)
ECCN (EU)
Country of Origin
Board production status
Budgetary Price (US$)*/Qty
STEVAL-ISA108V1 Available at 2 distributors

Distributor availability ofSTEVAL-ISA108V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1 1 Order Now
Farnell Element14 EUROPE 2 1 Order Now

Distributor reported inventory date: 2020-08-01

Distributor Name

DIGIKEY

Stock

1

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-01

ST1S41PUR
Active
- EAR99 NEC ITALY - 41.0 / 1

STEVAL-ISA108V1

Core Product

ST1S41PUR

Marketing Status

Active

Budgetary Price (US$)*/Qty

41.0 / 1

Distributor availability ofSTEVAL-ISA108V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1 1 Order Now
Farnell Element14 EUROPE 2 1 Order Now

Distributor reported inventory date: 2020-08-01

Distributor Name

DIGIKEY

Stock

1

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-01

Supplier

-

ECCN (US)

EAR99

ECCN (EU)

NEC

Budgetary Price (US$)* / Qty

41.0 / 1

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