High current switching regulator

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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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Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
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L4964 MW 15L Tube
Active
3.991 10000 EAR99 MOROCCO Check Availability

Distributor availability ofL4964

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 294 1 Order Now
ARROW EUROPE 3450 0 Order Now

Distributor reported inventory date: 2019-09-18

Distributor Name

DIGIKEY

Stock

294

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

3450

Min.Order

0

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-18

Buy now
L4964HT MW 15L Tube
Active
4.5 10000 EAR99 - No availability of distributors reported, please contact our sales office Buy now

L4964

Package

MW 15L

Packing Type

Tube

Unit Price (US$)

3.991*

Distributor availability ofL4964

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 294 1 Order Now
ARROW EUROPE 3450 0 Order Now

Distributor reported inventory date: 2019-09-18

Distributor Name

DIGIKEY

Stock

294

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

3450

Min.Order

0

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-18

Marketing Status

Active

Unit Price (US$)

3.991

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MOROCCO

L4964HT

Package

MW 15L

Packing Type

Tube

Unit Price (US$)

4.5*

Marketing Status

Active

Unit Price (US$)

4.5

Quantity

10000

ECCN (US)

EAR99

Country of Origin

-

(*) 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
      DS0064
      High current switching regulator
      1.2
      1.03 MB
      PDF
      DS0064

      High current switching regulator

Publications and Collaterals

    • Description Version Size Action
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      Switching Converters (DC-DC) – Quick Reference Guide 1.0
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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L4964
Active
MW 15L Industrial Ecopack1
L4964HT
Active
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

Active

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.