38 V, 1.5 A synchronous step-down switching regulator evaluation board based on A6986F5V

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  • The STEVAL-ISA189V1 is a product evaluation board based on the ST synchronous step-down switching regulator A6986F5V, which can deliver up to 1.5 A and, with its 100% duty cycle ability to withstand cold crank events and wide input operating voltage range, represents 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 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 that ensures high efficiency under light load, which is a requirement in typical car body applications that are active when a car is parked. 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, 500 kHz 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
    • 1.5 A DC output current
    • 4 V to 38 V operating input voltage
    • Low consumption mode or low noise mode
    • Programmable ISKIP current
    • 45 μA IQ at light load (LCM VIN = 12 V)
    • 8 μA IQ-SHTDWN
    • Adjustable fSW (250 kHz - 2 MHz)
    • Fixed output voltage VOUT= 5 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 = 180 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
Order from Distributors
Order from ST
STEVAL-ISA189V1 A6986F5V
Active
27.3 1 EAR99 ITALY - Check Availability

Distributor availability ofSTEVAL-ISA189V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1 1 Order Now
RS COMPONENTS EUROPE 2 1 Order Now
Farnell Element14 EUROPE 6 1 Order Now

Distributor reported inventory date: 2019-10-21

Distributor Name

DIGIKEY

Stock

1

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2

Min.Order

1

Region

EUROPE Order Now

Farnell Element14

Stock

6

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-21

STEVAL-ISA189V1

Core Product

A6986F5V

Marketing Status

Active

Unit Price (US$)

27.3*

Distributor availability ofSTEVAL-ISA189V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1 1 Order Now
RS COMPONENTS EUROPE 2 1 Order Now
Farnell Element14 EUROPE 6 1 Order Now

Distributor reported inventory date: 2019-10-21

Distributor Name

DIGIKEY

Stock

1

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2

Min.Order

1

Region

EUROPE Order Now

Farnell Element14

Stock

6

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-21

Unit Price (US$)

27.3

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
      DB2831
      38 V, 1.5 A synchronous step-down switching regulator evaluation board based on A6986F5V
      1.0
      225.99 KB
      PDF
      DB2831

      38 V, 1.5 A synchronous step-down switching regulator evaluation board based on A6986F5V

Hardware Resources

    • Description Version Size Action
      STEVAL-ISA189V1 gerber files 1.0
      1.36 MB
      ZIP

      STEVAL-ISA189V1 gerber files

    • Description Version Size Action
      STEVAL-ISA189V1 BOM 1.0
      10.32 KB
      PDF

      STEVAL-ISA189V1 BOM

    • Description Version Size Action
      STEVAL-ISA189V1 schematic 1.0
      47.55 KB
      PDF

      STEVAL-ISA189V1 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-ISA189V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA189V1

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.