Up to 1 A step down switching regulator

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  • The L5970AD is a step down monolithic power switching regulator with a switch current limit of 1.5A so it is able to deliver more than 1A 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 200mΩ) as switching element to avoid the use of bootstrap capacitor and guarantee high efficiency.
    An internal oscillator fixes the switching frequency at 500KHz to minimize the size of external components. 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
    • 500KHz INTERNALLY FIXED FREQUENCY
    • 1.5A INTERNAL SWITCH
    • 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 1.235V TO 35V

Circuit Diagram

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Part Number
Package
Packing Type
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Budgetary Price (US$)*
Quantity
ECCN (US)
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Order from ST
L5970ADTR SO-8 Tape And Reel
Active
0.959 10000 EAR99 CHINA Check Availability

Distributor availability ofL5970ADTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 36596 1 Order Now
RS COMPONENTS EUROPE 2500 1 Order Now
Newark Element14 AMERICA 564 0 Order Now
MOUSER WORLDWIDE 740 1 Order Now
Farnell Element14 EUROPE 975 1 Order Now

Distributor reported inventory date: 2019-10-16

Distributor Name

DIGIKEY

Stock

36596

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2500

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

564

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

740

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

975

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-16

Get sample
L5970AD SO-8 Tube
Active
0.959 10000 EAR99 CHINA Check Availability

Distributor availability ofL5970AD

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2340 1 Order Now
RS COMPONENTS EUROPE 1715 5 Order Now
FUTURE WORLDWIDE 2000 1 Order Now
ARROW EUROPE 1 0 Order Now
MOUSER WORLDWIDE 1964 1 Order Now
Farnell Element14 EUROPE 707 1 Order Now

Distributor reported inventory date: 2019-10-16

Distributor Name

DIGIKEY

Stock

2340

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1715

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

2000

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

1

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1964

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

707

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-16

Buy now

L5970ADTR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.959*

Distributor availability ofL5970ADTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 36596 1 Order Now
RS COMPONENTS EUROPE 2500 1 Order Now
Newark Element14 AMERICA 564 0 Order Now
MOUSER WORLDWIDE 740 1 Order Now
Farnell Element14 EUROPE 975 1 Order Now

Distributor reported inventory date: 2019-10-16

Distributor Name

DIGIKEY

Stock

36596

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2500

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

564

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

740

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

975

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-16

Marketing Status

Active

Unit Price (US$)

0.959

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

L5970AD

Package

SO-8

Packing Type

Tube

Unit Price (US$)

0.959*

Distributor availability ofL5970AD

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2340 1 Order Now
RS COMPONENTS EUROPE 1715 5 Order Now
FUTURE WORLDWIDE 2000 1 Order Now
ARROW EUROPE 1 0 Order Now
MOUSER WORLDWIDE 1964 1 Order Now
Farnell Element14 EUROPE 707 1 Order Now

Distributor reported inventory date: 2019-10-16

Distributor Name

DIGIKEY

Stock

2340

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1715

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

2000

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

1

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1964

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

707

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-16

Marketing Status

Active

Unit Price (US$)

0.959

Quantity

10000

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

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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L5970AD
Active
SO-8 Industrial Ecopack2 (**)
L5970ADTR
Active
SO-8 Industrial Ecopack2 (**)

L5970AD

Package:

SO-8

Material Declaration**:

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

L5970ADTR

Package:

SO-8

Material Declaration**:

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.