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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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STMicroelectronics - L5970AD

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Quality and Reliability

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.

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
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L5970ADTR Available at 5 distributors

Distributor availability ofL5970ADTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2500 1 Order Now
RS COMPONENTS EUROPE 2493 1 Order Now
Newark Element14 AMERICA 544 0 Order Now
MOUSER WORLDWIDE 2435 1 Order Now
Farnell Element14 EUROPE 2177 1 Order Now

Distributor reported inventory date: 2020-10-29

Distributor Name

DIGIKEY

Stock

2500

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2493

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

544

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2435

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2177

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-29

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel SO-8 -40 150 CHINA 0.959 / 1k
L5970AD Available at 6 distributors

Distributor availability ofL5970AD

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1643 1 Order Now
COMPEL EUROPE 1 1 Order Now
RS COMPONENTS EUROPE 1505 5 Order Now
ARROW EUROPE 521 0 Order Now
MOUSER WORLDWIDE 1389 1 Order Now
Farnell Element14 EUROPE 2124 1 Order Now

Distributor reported inventory date: 2020-10-29

Distributor Name

DIGIKEY

Stock

1643

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1505

Min.Order

5

Region

EUROPE Order Now

ARROW

Stock

521

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1389

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2124

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-29

Buy Direct
Active
EAR99 NEC Tube SO-8 -40 150 CHINA 0.959 / 1k

L5970ADTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.959 / 1k

Distributor availability ofL5970ADTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2500 1 Order Now
RS COMPONENTS EUROPE 2493 1 Order Now
Newark Element14 AMERICA 544 0 Order Now
MOUSER WORLDWIDE 2435 1 Order Now
Farnell Element14 EUROPE 2177 1 Order Now

Distributor reported inventory date: 2020-10-29

Distributor Name

DIGIKEY

Stock

2500

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2493

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

544

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2435

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2177

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-29

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-8

Operating Temperature (°C)

(min)

-40

(max)

150

Budgetary Price (US$)* / Qty

0.959 / 1k

Country of Origin

CHINA

L5970AD

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.959 / 1k

Distributor availability ofL5970AD

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1643 1 Order Now
COMPEL EUROPE 1 1 Order Now
RS COMPONENTS EUROPE 1505 5 Order Now
ARROW EUROPE 521 0 Order Now
MOUSER WORLDWIDE 1389 1 Order Now
Farnell Element14 EUROPE 2124 1 Order Now

Distributor reported inventory date: 2020-10-29

Distributor Name

DIGIKEY

Stock

1643

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1505

Min.Order

5

Region

EUROPE Order Now

ARROW

Stock

521

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1389

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2124

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-29

ECCN (EU)

NEC

Packing Type

Tube

Package

SO-8

Operating Temperature (°C)

(min)

-40

(max)

150

Budgetary Price (US$)* / Qty

0.959 / 1k

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