A7985A

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2 A step-down switching regulator for automotive applications

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  • The A7985A is a step-down switching regulator with a 2.5 A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 2 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 (see PPAP for more details)
    • 2 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

Recommended for you

Related Applications

Industrial Power and Tools

Lighting and Controls

Power Supplies and Converters

Smart Farming

ADAS

Electro Mobility

In-Vehicle Infotainment (IVI)

Telematics and Networking

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS9022
      2 A step-down switching regulator for automotive applications
      7.0
      1.18 MB
      PDF
      DS9022

      2 A step-down switching regulator for automotive applications

    • Description Version Size Action
      TN1224
      Mounting instructions for SMD (surface mounting device) packages
      2.2
      1.06 MB
      PDF
      TN1224

      Mounting instructions for SMD (surface mounting device) packages

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

      Electric vehicle (EV) ecosystem

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
A7985A
NRND
PowerSO-8 Automotive Ecopack2
A7985ATR
Active
PowerSO-8 Automotive Ecopack2

A7985A

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

PowerSO-8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

A7985ATR

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Package
Packing Type
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
A7985ATR Available at 3 distributors

Distributor availability ofA7985ATR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2277 1 Order Now
MOUSER WORLDWIDE 3016 1 Order Now
Farnell Element14 EUROPE 2412 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

2277

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3016

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2412

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Get sample PowerSO-8 Tape And Reel
Active
EAR99 PHILIPPINES 0.914 / 1k
A7985A Available at 4 distributors

Distributor availability ofA7985A

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1681 1 Order Now
Newark Element14 AMERICA 500 0 Order Now
MOUSER WORLDWIDE 899 1 Order Now
Farnell Element14 EUROPE 10 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

1681

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

500

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

899

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

10

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Buy now PowerSO-8 Tube
NRND
EAR99 PHILIPPINES 0.914 / 1k

A7985ATR

Package

PowerSO-8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.914 / 1k

Distributor availability ofA7985ATR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2277 1 Order Now
MOUSER WORLDWIDE 3016 1 Order Now
Farnell Element14 EUROPE 2412 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

2277

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3016

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2412

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.914 / 1k

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

A7985A

Package

PowerSO-8

Packing Type

Tube

Budgetary Price (US$)*/Qty

0.914 / 1k

Distributor availability ofA7985A

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1681 1 Order Now
Newark Element14 AMERICA 500 0 Order Now
MOUSER WORLDWIDE 899 1 Order Now
Farnell Element14 EUROPE 10 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

1681

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

500

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

899

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

10

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Marketing Status

NRND

Budgetary Price (US$)* / Qty

0.914 / 1k

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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