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  • The L4964 is a stepdown power switching regulator delivering 4A at a voltage variable from 5.1V to 28V.

    Features of the device include overload protection, soft start, remote inhibit, thermal protection, a reset output for microprocessors and a PWM comparator input for synchronization in multichip configurations.
    The L4964 is mounted in a 15-lead Multiwattâ plastic power package and requires very few external components.
    Efficient operation at switching frequencies up to 120kHz allows a reduction in the size and cost of external filter components.

    Key Features

    • CURRENT LIMITING
    • RESET OUTPUT
    • THERMAL SHUTDOWN
    • INPUT FOR REMOTE INHIBIT AND SYNCHRONUS PWM
    • VERY FEW EXTERNAL COMPONENTS
    • VERY HIGH EFFICIENCY (UP TO 90 %)
    • 4 A OUTPUT CURRENT
    • 0 TO 100 % DUTY CYCLE RANGE
    • 5.1 V TO 28 V OUTPUT VOLTAGE RANGE
    • SWITCHING FREQUENCY UP TO 120 KHz
    • SOFT START
    • PRECISE (± 3 %) ON-CHIP REFERENCE

Circuit Diagram

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Technical Documentation

    • Description Version Size Action
      DS0064
      High current switching regulator
      1.2
      1.03 MB
      PDF
      DS0064

      High current 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

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**
L4964
Active
MW 15L Industrial Ecopack1
L4964HT
NRND
MW 15L Industrial Ecopack1

L4964

Package:

MW 15L

Material Declaration**:

Marketing Status

Active

Package

MW 15L

Grade

Industrial

RoHS Compliance Grade

Ecopack1

L4964HT

Package:

MW 15L

Material Declaration**:

Marketing Status

NRND

Package

MW 15L

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) 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
Order from ST
Package
Packing Type
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
L4964 Available at 2 distributors

Distributor availability ofL4964

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 294 1 Order Now
ARROW EUROPE 4200 0 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

294

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

4200

Min.Order

0

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Buy now MW 15L Tube
Active
EAR99 MOROCCO 3.991 / 1k
L4964HT No availability of distributors reported, please contact our sales office Buy now MW 15L Tube
NRND
EAR99 MOROCCO 4.5 / 1k

L4964

Package

MW 15L

Packing Type

Tube

Budgetary Price (US$)*/Qty

3.991 / 1k

Distributor availability ofL4964

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 294 1 Order Now
ARROW EUROPE 4200 0 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

294

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

4200

Min.Order

0

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Marketing Status

Active

Budgetary Price (US$)* / Qty

3.991 / 1k

ECCN (US)

EAR99

Country of Origin

MOROCCO

L4964HT

Package

MW 15L

Packing Type

Tube

Budgetary Price (US$)*/Qty

4.5 / 1k

Marketing Status

NRND

Budgetary Price (US$)* / Qty

4.5 / 1k

ECCN (US)

EAR99

Country of Origin

MOROCCO

(*) 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