38 V, 0.5 A synchronous step-down switching regulator evaluation board based on A6985F3V3

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  • The STEVAL-ISA185V1 is a product evaluation board based on the ST synchronous step-down switching regulator A6985F3V3, which can deliver up to 0.5 A and, with its 100% duty cycle ability to withstand cold crank events and wide input operating voltage range, renders the A6985F3V3 the ideal choice for battery-powered automotive systems. Synchronous rectification helps achieve higher efficiency at full load as well as application compactness, while high-frequency switching (programmable up to 2 MHz) helps to reduce the cost and size of power passive components while remaining outside the AM band.

    The device can operate in low consumption mode (LCM) with a quiescent current of 30 µA, hence ensuring the high efficiency under light load condition required in typical car body applications that are active during car parking. A low noise mode (LNM) can be selected to meet the requirements of infotainment applications with forced PWM mode under all load conditions.
    The default board configuration is LCM active, 2 MHz switching frequency, high ISKIP current and the switchover feature enabled, but all of these settings can be easily changed so the user can evaluate different application scenarios.

    Key Features

    • AECQ100 qualification
    • 0.5 A DC output current
    • 4 V to 38 V operating input voltage
    • Low consumption mode or low noise mode
    • Programmable ISKIP current
    • 30 μA IQ at light load (LCM VIN = 12 V)
    • 8 μA IQ-SHTDWN
    • Adjustable f SW (250 kHz - 2 MHz)
    • Fixed output voltage VOUT = 3.3 V
    • Embedded output voltage supervisor
    • Synchronization
    • Adjustable soft-start time
    • Internal current limiting
    • Overvoltage protection
    • Output voltage sequencing
    • Peak current mode architecture
    • RDS(on)HS = 360 mΩ ; RDS(on)LS = 150 mΩ
    • Thermal shutdown
    • RoHS compliant

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Part Number
Core Product
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Board production status
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STEVAL-ISA185V1 A6985F3V3
Active
26.0 1 EAR99 ITALY - Check Availability

Distributor availability ofSTEVAL-ISA185V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3 1 Order Now

Distributor reported inventory date: 2019-12-06

Distributor Name

DIGIKEY

Stock

3

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-12-06

Buy now

STEVAL-ISA185V1

Core Product

A6985F3V3

Marketing Status

Active

Unit Price (US$)

26.0*

Distributor availability ofSTEVAL-ISA185V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3 1 Order Now

Distributor reported inventory date: 2019-12-06

Distributor Name

DIGIKEY

Stock

3

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-12-06

Unit Price (US$)

26

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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Technical Documentation

    • Description Version Size Action
      DB2814
      38 V, 0.5 A synchronous step-down switching regulator evaluation board based on A6985F3V3
      1.0
      227.72 KB
      PDF
      DB2814

      38 V, 0.5 A synchronous step-down switching regulator evaluation board based on A6985F3V3

Hardware Resources

    • Description Version Size Action
      STEVAL-ISA185V1 gerber files 1.0
      1.32 MB
      ZIP

      STEVAL-ISA185V1 gerber files

    • Description Version Size Action
      STEVAL-ISA185V1 BOM 1.0
      10.04 KB
      PDF

      STEVAL-ISA185V1 BOM

    • Description Version Size Action
      STEVAL-ISA185V1 schematic 1.0
      47.56 KB
      PDF

      STEVAL-ISA185V1 schematic

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-ISA185V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA185V1

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.

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