3 A step-down switching regulator for automotive applications

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  • The A7986A is a step-down switching regulator with a 3.7 A (min.) current limited embedded power MOSFET, so it is able to deliver up to 3 A current to the load depending on the application conditions.

    The input voltage can range from 4.5 V to 38 V, while the output voltage can be set starting from 0.6 V to VIN.
    Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.
    The HSOP8 package with exposed pad allows the reduction of Rth(JA) down to 40 °C/W.

    Key Features

    • AEC-Q100 qualified
    • 3 A DC output current
    • 4.5 V to 38 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
    • HSOP8 package

Sample & Buy

Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
A7986A PowerSO-8 Tube
Active
0.948 10000 EAR99 CHINA Check Availability

Distributor availability ofA7986A

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2000 1 Order Now
MOUSER WORLDWIDE 499 1 Order Now
Farnell Element14 EUROPE 1830 1 Order Now

Distributor reported inventory date: 2019-10-16

Distributor Name

DIGIKEY

Stock

2000

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

499

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1830

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-16

Buy now
A7986ATR PowerSO-8 Tape And Reel
Active
0.948 10000 EAR99 CHINA Check Availability

Distributor availability ofA7986ATR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1799 1 Order Now
RS COMPONENTS EUROPE 2500 1 Order Now
ARROW AMERICA 15000 2500 Order Now
MOUSER WORLDWIDE 2641 1 Order Now
Farnell Element14 EUROPE 3436 1 Order Now
RUTRONIK EUROPE 2500 2500 Order Now

Distributor reported inventory date: 2019-10-16

Distributor Name

DIGIKEY

Stock

1799

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2500

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

15000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

2641

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3436

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

2500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-16

Get sample

A7986A

Package

PowerSO-8

Packing Type

Tube

Unit Price (US$)

0.948*

Distributor availability ofA7986A

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2000 1 Order Now
MOUSER WORLDWIDE 499 1 Order Now
Farnell Element14 EUROPE 1830 1 Order Now

Distributor reported inventory date: 2019-10-16

Distributor Name

DIGIKEY

Stock

2000

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

499

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1830

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-16

Marketing Status

Active

Unit Price (US$)

0.948

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

A7986ATR

Package

PowerSO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.948*

Distributor availability ofA7986ATR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1799 1 Order Now
RS COMPONENTS EUROPE 2500 1 Order Now
ARROW AMERICA 15000 2500 Order Now
MOUSER WORLDWIDE 2641 1 Order Now
Farnell Element14 EUROPE 3436 1 Order Now
RUTRONIK EUROPE 2500 2500 Order Now

Distributor reported inventory date: 2019-10-16

Distributor Name

DIGIKEY

Stock

1799

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2500

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

15000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

2641

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3436

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

2500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-16

Marketing Status

Active

Unit Price (US$)

0.948

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

(*) 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
      DS8892
      3 A step-down switching regulator for automotive applications
      8.0
      1.4 MB
      PDF
      DS8892

      3 A step-down switching regulator for automotive applications

HW Model, CAD Libraries & SVD

    • Description Version Size Action
      X798X Pspice model
      2.07 MB
      ZIP

      X798X Pspice model

Publications and Collaterals

    • Description Version Size Action
      A798x, A597x switching regulators for car power management 1.0
      714.2 KB
      PDF

      A798x, A597x switching regulators for car power management

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF
      Switching Converters (DC-DC) – Quick Reference Guide 1.0
      481.92 KB
      PDF

      Electric vehicle (EV) ecosystem

      Switching Converters (DC-DC) – Quick Reference Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
A7986A
Active
PowerSO-8 Automotive Ecopack2
A7986ATR
Active
PowerSO-8 Automotive Ecopack2

A7986A

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

A7986ATR

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

Grade

Automotive

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.

eDesignSuite

Converter

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

V This option is required and must be a number.
A This option is required and must be a number.