L5970AD

Active
Education

Up to 1 A step down switching regulator

Download datasheet Order Direct
Overview
Online design
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
Get Started
Partner products
Sales Briefcase

Product overview

Description

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.
  • All 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

Recommended for you

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L5970AD

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

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.

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 1590 1 Order Now
RS COMPONENTS EUROPE 2441 1 Order Now
Newark Element14 AMERICA 20 0 Order Now
MOUSER WORLDWIDE 2388 1 Order Now
Farnell Element14 EUROPE 1185 1 Order Now

Distributor reported inventory date: 2021-05-12

Distributor Name

DIGIKEY

Stock

1590

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2441

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

20

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2388

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1185

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-05-12

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel SO-8 -40 150 CHINA 0.959 / 1k
L5970AD Available at 4 distributors

Distributor availability ofL5970AD

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 1400 5 Order Now
FUTURE WORLDWIDE 955 1 Order Now
MOUSER WORLDWIDE 1026 1 Order Now
Farnell Element14 EUROPE 1756 1 Order Now

Distributor reported inventory date: 2021-05-12

Distributor Name

RS COMPONENTS

Stock

1400

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

955

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1026

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1756

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-05-12

Buy Direct
Active
EAR99 NEC Tube SO-8 -40 150 CHINA 1.0 / 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 1590 1 Order Now
RS COMPONENTS EUROPE 2441 1 Order Now
Newark Element14 AMERICA 20 0 Order Now
MOUSER WORLDWIDE 2388 1 Order Now
Farnell Element14 EUROPE 1185 1 Order Now

Distributor reported inventory date: 2021-05-12

Distributor Name

DIGIKEY

Stock

1590

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2441

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

20

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2388

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1185

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-05-12

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

1.0 / 1k

Distributor availability ofL5970AD

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 1400 5 Order Now
FUTURE WORLDWIDE 955 1 Order Now
MOUSER WORLDWIDE 1026 1 Order Now
Farnell Element14 EUROPE 1756 1 Order Now

Distributor reported inventory date: 2021-05-12

Distributor Name

RS COMPONENTS

Stock

1400

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

955

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1026

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1756

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-05-12

ECCN (EU)

NEC

Packing Type

Tube

Package

SO-8

Operating Temperature (°C)

(min)

-40

(max)

150

Budgetary Price (US$)* / Qty

1.0 / 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