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  • The L5972D is a step down monolithic power switching regulator with a minimum switch current limit of 2A so it is able to deliver more than 1.5A DC current to the load depending on the application conditions.

    The output voltage can be set from 1.235V to 35V.
    The device uses an internal P-Channel D-MOS transistor (with a typical Rdson of 250mΩ) as switching element to minimize the size of the external components.
    An internal oscillator fixes the switching frequency at 250kHz.
    Having a minimum input voltage of 4.4V only, it is particularly suitable for 5V bus, available in all computer related applications.
    Pulse by pulse current limit with the internal frequency modulation offers an effective constant current short circuit protection.

    Key Features

    • Thermal shutdown
    • Protection against feedback disconnection
    • Zero load current operation
    • Voltage feedforward
    • 2A internal switch
    • Output voltage adjustable from 1.235V to 35V
    • Operating input voltage from 4.4V to 36V
    • 250kHz Internally fixed frequency
    • Internal current limiting
    • Low dropout operation: 100% duty cycle

Recommended for you

Evaluation Tools

    • Part Number

      L5972D Up to 2A Step Down Switching Regulator Evaluation Board

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS2670
      2A switch step down switching regulator
      10.2
      246.48 KB
      PDF
      DS2670

      2A switch step down switching regulator

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      Designing with the STEVAL-ISA089V1 high efficiency DC-DC converter
      3.0
      1.13 MB
      PDF
      AN1517

      Designing with the STEVAL-ISA089V1 high efficiency DC-DC converter

    • 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
      DN0010
      Adapting ST power line modem evaluation boards to communicate over a DC bus
      1.2
      404.54 KB
      PDF
      DN0011
      ST1S03 alternative topology: Using a buck in a negative buck-boost configuration
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      361.3 KB
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      DN0010

      Adapting ST power line modem evaluation boards to communicate over a DC bus

      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**
L5972D
Active
SO-8 Industrial Ecopack2 (**)
L5972D013TR
Active
SO-8 Industrial Ecopack2 (**)

L5972D

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

L5972D013TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-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.

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.

LED Driver

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]

LED custom

V This option is required.
A This option is required.
Ω This option is required.

LEDs

This option is required. And must be a whole positive number between 1 and 20.
This option is required. And must be a whole positive number between 1 and 20.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Package
Packing Type
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
L5972D Available at 8 distributors

Distributor availability ofL5972D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2565 1 Order Now
COMPEL EUROPE 580 1 Order Now
RS COMPONENTS EUROPE 3116 5 Order Now
ARROW EUROPE 5307 0 Order Now
Newark Element14 AMERICA 3767 0 Order Now
MOUSER WORLDWIDE 7766 1 Order Now
Farnell Element14 EUROPE 16483 1 Order Now
ANGLIA Live EUROPE 1050 1 Order Now

Distributor reported inventory date: 2020-07-06

Distributor Name

DIGIKEY

Stock

2565

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

580

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

3116

Min.Order

5

Region

EUROPE Order Now

ARROW

Stock

5307

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

3767

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

7766

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

16483

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1050

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-06

Buy now SO-8 Tube
Active
EAR99 CHINA 0.991 / 1k
L5972D013TR Available at 6 distributors

Distributor availability ofL5972D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 12432 1 Order Now
COMPEL EUROPE 806 1 Order Now
AVNET AMERICA 2500 0 Order Now
ARROW EUROPE 5000 0 Order Now
MOUSER WORLDWIDE 18520 1 Order Now
Farnell Element14 EUROPE 2252 1 Order Now

Distributor reported inventory date: 2020-07-06

Distributor Name

DIGIKEY

Stock

12432

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

806

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

5000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

18520

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2252

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-06

Get sample SO-8 Tape And Reel
Active
EAR99 CHINA 0.991 / 1k

L5972D

Package

SO-8

Packing Type

Tube

Budgetary Price (US$)*/Qty

0.991 / 1k

Distributor availability ofL5972D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2565 1 Order Now
COMPEL EUROPE 580 1 Order Now
RS COMPONENTS EUROPE 3116 5 Order Now
ARROW EUROPE 5307 0 Order Now
Newark Element14 AMERICA 3767 0 Order Now
MOUSER WORLDWIDE 7766 1 Order Now
Farnell Element14 EUROPE 16483 1 Order Now
ANGLIA Live EUROPE 1050 1 Order Now

Distributor reported inventory date: 2020-07-06

Distributor Name

DIGIKEY

Stock

2565

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

580

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

3116

Min.Order

5

Region

EUROPE Order Now

ARROW

Stock

5307

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

3767

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

7766

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

16483

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1050

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-06

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.991 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

L5972D013TR

Package

SO-8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.991 / 1k

Distributor availability ofL5972D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 12432 1 Order Now
COMPEL EUROPE 806 1 Order Now
AVNET AMERICA 2500 0 Order Now
ARROW EUROPE 5000 0 Order Now
MOUSER WORLDWIDE 18520 1 Order Now
Farnell Element14 EUROPE 2252 1 Order Now

Distributor reported inventory date: 2020-07-06

Distributor Name

DIGIKEY

Stock

12432

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

806

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

5000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

18520

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2252

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-06

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.991 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

(*) 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