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  • The L4963 is a monolithic power switching regulator delivering 1.5A at 5.1V. The output voltage is adjustable from 5.1V to 36V, working in discontinuous variable frequency mode. Features of the device include remote inhibit, internal current limiting and thermal protection, reset and power fail outputs for microprocessor.

    The L4963 is mounted in a 12+3+3 lead Powerdip (L4963) and SO20 large (L4963D) plastic packages and requires very few external components.

    Key Features

    • NO FREQ. COMPENSATION REQUIRED
    • VERY FEW EXTERNAL COMPONENTS
    • THERMAL SHUTDOWN
    • 1.5A OUTPUT LOAD CURRENT
    • DISCONTINUOUS VARIABLE FREQUENCY MODE
    • 5.1 TO 36V OUTPUT VOLTAGE RANGE
    • VERY HIGH EFFICIENCY
    • RESET AND POWER FAIL OUTPUT FOR MICROPROCESSOR
    • PRECISE (+/–2%) ON CHIP REFERENCE

Circuit Diagram

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Technical Documentation

    • Description Version Size Action
      DS0063
      1.5A SWITCHING REGULATOR
      1.1
      4.73 MB
      PDF
      DS0063

      1.5A SWITCHING REGULATOR

    • Description Version Size Action
      AN458
      Designing with the L4963 monolithic discontinuous mode power switching regulator
      1.1
      5.2 MB
      PDF
      AN458

      Designing with the L4963 monolithic discontinuous mode power 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**
L4963D
Active
SO-20 Industrial Ecopack1 (*)
L4963D013TR
Active
SO-20 Industrial Ecopack1 (*)
L4963W
NRND
PDIP 18 Industrial Ecopack1

L4963D

Package:

SO-20

Material Declaration**:

Marketing Status

Active

Package

SO-20

Grade

Industrial

RoHS Compliance Grade

Ecopack1 (*)

L4963D013TR

Package:

SO-20

Material Declaration**:

Marketing Status

Active

Package

SO-20

Grade

Industrial

RoHS Compliance Grade

Ecopack1 (*)

L4963W

Package:

PDIP 18

Material Declaration**:

Marketing Status

NRND

Package

PDIP 18

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
L4963D Available at 2 distributors

Distributor availability ofL4963D

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 178 1 Order Now
ARROW EUROPE 19 0 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

RS COMPONENTS

Stock

178

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

19

Min.Order

0

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

SO-20 Tube
Active
EAR99 MALAYSIA 1.744 / 1k
L4963D013TR Available at 2 distributors

Distributor availability ofL4963D013TR

Distributor Name
Region Stock Min. Order Third party link
ARROW EUROPE 10000 0 Order Now
MOUSER WORLDWIDE 365 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

ARROW

Stock

10000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

365

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-08

Get sample SO-20 Tape And Reel
Active
EAR99 MALAYSIA 1.744 / 1k
L4963W Available at 3 distributors

Distributor availability ofL4963W

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 188 1 Order Now
MOUSER WORLDWIDE 24 1 Order Now
Farnell Element14 EUROPE 985 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

188

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

24

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

985

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Buy now PDIP 18 Tube
NRND
EAR99 MALAYSIA 1.861 / 1k

L4963D

Package

SO-20

Packing Type

Tube

Budgetary Price (US$)*/Qty

1.744 / 1k

Distributor availability ofL4963D

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 178 1 Order Now
ARROW EUROPE 19 0 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

RS COMPONENTS

Stock

178

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

19

Min.Order

0

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Marketing Status

Active

Budgetary Price (US$)* / Qty

1.744 / 1k

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L4963D013TR

Package

SO-20

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

1.744 / 1k

Distributor availability ofL4963D013TR

Distributor Name
Region Stock Min. Order Third party link
ARROW EUROPE 10000 0 Order Now
MOUSER WORLDWIDE 365 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

ARROW

Stock

10000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

365

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-08

Marketing Status

Active

Budgetary Price (US$)* / Qty

1.744 / 1k

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L4963W

Package

PDIP 18

Packing Type

Tube

Budgetary Price (US$)*/Qty

1.861 / 1k

Distributor availability ofL4963W

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 188 1 Order Now
MOUSER WORLDWIDE 24 1 Order Now
Farnell Element14 EUROPE 985 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

188

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

24

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

985

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Marketing Status

NRND

Budgetary Price (US$)* / Qty

1.861 / 1k

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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