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  • The L7986TA is a step-down switching regulator with 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 HSOP package with exposed pad allows the reduction of RthJAdown to 40 °C/W.

    Key Features

    • 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
    • Guarantee overtemperature range (-40 °C to 125 °C)

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Evaluation Tools

    • Part Number

      3 A step-down switching demonstration board based on the L7986A in HSOP8 package

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS8611
      3 A step-down switching regulator
      4.0
      1.25 MB
      PDF
      DS8611

      3 A step-down switching regulator

    • 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

    • Description Version Size Action
      DN0011
      ST1S03 alternative topology: Using a buck in a negative buck-boost configuration
      1.2
      361.3 KB
      PDF
      DN0011

      ST1S03 alternative topology: Using a buck in a negative buck-boost configuration

Publications and Collaterals

    • 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**
L7986TA
Active
PowerSO-8 Industrial Ecopack2
L7986TATR
Active
PowerSO-8 Industrial Ecopack2

L7986TA

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L7986TATR

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

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
Order from Distributors
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Package
Packing Type
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
L7986TATR Available at 1 distributors

Distributor availability ofL7986TATR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2324 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

MOUSER

Stock

2324

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-10

Get sample PowerSO-8 Tape And Reel
Active
EAR99 PHILIPPINES 0.914 / 1k
L7986TA Available at 2 distributors

Distributor availability ofL7986TA

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 51 1 Order Now
MOUSER WORLDWIDE 228 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

51

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

228

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-10

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

L7986TATR

Package

PowerSO-8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.914 / 1k

Distributor availability ofL7986TATR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2324 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

MOUSER

Stock

2324

Min.Order

1

Region

WORLDWIDE 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

L7986TA

Package

PowerSO-8

Packing Type

Tube

Budgetary Price (US$)*/Qty

0.914 / 1k

Distributor availability ofL7986TA

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 51 1 Order Now
MOUSER WORLDWIDE 228 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

51

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

228

Min.Order

1

Region

WORLDWIDE 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

(*) 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