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  • The L5970D is a step down monolithic power switching regulator capable to deliver up to 1A at output voltages from 1.2V 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

    • Inhibit for zero current consumption
    • Internal current limiting
    • Protection against feedback disconnection
    • Synchronization
    • Thermal shutdown
    • Voltage feedforward
    • 250KHz Internally fixed frequency
    • Up to 1A output current
    • 3.3V / (±2%) reference voltage
    • Operating input voltage from 4.4V to 36V
    • Low dropout operation: 100% duty cycle
    • Zero load current operation
    • Output voltage adjustable from 1.2V to 35V

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS2027
      Up to 1A step down switching regulator
      16.2
      279.57 KB
      PDF
      DS2027

      Up to 1A step down switching regulator

    • Description Version Size Action
      AN1330
      Designing with the L5970D 1A high efficiency DC-DC converter
      3.1
      882.24 KB
      PDF
      AN2259
      High intensity LED driver using the L5970D/L5973D
      1.6
      307.67 KB
      PDF
      AN1330

      Designing with the L5970D 1A high efficiency DC-DC converter

      AN2259

      High intensity LED driver using the L5970D/L5973D

    • 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

HW Model, CAD Libraries & SVD

    • Description Version Size Action
      X597X Pspice model
      3.64 MB
      ZIP

      X597X Pspice model

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**
L5970D
Active
SO-8 Industrial Ecopack2 (**)
L5970D013TR
Active
SO-8 Industrial Ecopack2 (**)

L5970D

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

L5970D013TR

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
L5970D013TR Available at 9 distributors

Distributor availability ofL5970D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 62 1 Order Now
COMPEL EUROPE 8064 1 Order Now
RS COMPONENTS EUROPE 6337 1 Order Now
ARROW EUROPE 27500 0 Order Now
ARROW AMERICA 2500 2500 Order Now
P&S ASIA/PACIFIC 9 1 Order Now
MOUSER WORLDWIDE 3395 1 Order Now
Farnell Element14 EUROPE 6568 1 Order Now
RUTRONIK EUROPE 2500 2500 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

62

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

8064

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

6337

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

27500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

2500

Region

AMERICA Order Now

P&S

Stock

9

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

3395

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

6568

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

2500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Get sample SO-8 Tape And Reel
Active
EAR99 CHINA 0.959 / 1k
L5970D Available at 11 distributors

Distributor availability ofL5970D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 739 1 Order Now
COMPEL EUROPE 6907 1 Order Now
RS COMPONENTS EUROPE 9520 5 Order Now
FUTURE WORLDWIDE 576 1 Order Now
ARROW EUROPE 17939 0 Order Now
Newark Element14 AMERICA 388 0 Order Now
P&S ASIA/PACIFIC 47 1 Order Now
MOUSER WORLDWIDE 6422 1 Order Now
Farnell Element14 EUROPE 18521 1 Order Now
ANGLIA Live EUROPE 3595 1 Order Now
RUTRONIK EUROPE 1000 100 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

739

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

6907

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

9520

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

576

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

17939

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

388

Min.Order

0

Region

AMERICA Order Now

P&S

Stock

47

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

6422

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

18521

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3595

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

1000

Min.Order

100

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Buy now SO-8 Tube
Active
EAR99 CHINA 0.959 / 1k

L5970D013TR

Package

SO-8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.959 / 1k

Distributor availability ofL5970D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 62 1 Order Now
COMPEL EUROPE 8064 1 Order Now
RS COMPONENTS EUROPE 6337 1 Order Now
ARROW EUROPE 27500 0 Order Now
ARROW AMERICA 2500 2500 Order Now
P&S ASIA/PACIFIC 9 1 Order Now
MOUSER WORLDWIDE 3395 1 Order Now
Farnell Element14 EUROPE 6568 1 Order Now
RUTRONIK EUROPE 2500 2500 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

62

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

8064

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

6337

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

27500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

2500

Region

AMERICA Order Now

P&S

Stock

9

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

3395

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

6568

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

2500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.959 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

L5970D

Package

SO-8

Packing Type

Tube

Budgetary Price (US$)*/Qty

0.959 / 1k

Distributor availability ofL5970D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 739 1 Order Now
COMPEL EUROPE 6907 1 Order Now
RS COMPONENTS EUROPE 9520 5 Order Now
FUTURE WORLDWIDE 576 1 Order Now
ARROW EUROPE 17939 0 Order Now
Newark Element14 AMERICA 388 0 Order Now
P&S ASIA/PACIFIC 47 1 Order Now
MOUSER WORLDWIDE 6422 1 Order Now
Farnell Element14 EUROPE 18521 1 Order Now
ANGLIA Live EUROPE 3595 1 Order Now
RUTRONIK EUROPE 1000 100 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

739

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

6907

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

9520

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

576

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

17939

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

388

Min.Order

0

Region

AMERICA Order Now

P&S

Stock

47

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

6422

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

18521

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3595

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

1000

Min.Order

100

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.959 / 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