Up to 1 A step down switching regulator for automotive applications

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  • The A5970AD is a step-down monolithic power switching regulator with a minimum switch current limit of 1.35 A so it is able to deliver up to 1 A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to VIN.

    The device uses an internal P-channel DMOS transistor (with a typical RDS(on)of 250 mΩ) as switching element to minimize the size of the external components.
    An internal oscillator fixes the switching frequency at 500 kHz. Having a minimum input voltage of 4 V only it fits the automotive applications requiring the device operation even in cold crank conditions. Pulse by pulse current limit with the internal frequency modulation offers an effective constant current short-circuit protection.

    Key Features

    • Qualified following the AEC-Q100 requirements (see PPAP for more details)
    • 1 A DC output current
    • Operating input voltage from 4 V to 36 V
    • 3.3 V / (± 2%) reference voltage
    • Output voltage adjustable from 1.235 V to VIN
    • Low dropout operation: 100% duty cycle
    • 500 kHz Internally fixed frequency
    • Voltage feed-forward
    • Zero load current operation
    • Internal current limiting
    • Inhibit for zero current consumption
    • Synchronization
    • Protection against feedback disconnection
    • Thermal shutdown

Circuit Diagram

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Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
A5970ADTR SO-8 Tape And Reel
Active
1.363 10000 EAR99 CHINA Check Availability

Distributor availability ofA5970ADTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3063 1 Order Now
ARROW EUROPE 2000 0 Order Now
MOUSER WORLDWIDE 2485 1 Order Now
Farnell Element14 EUROPE 101 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

3063

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

2485

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

101

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-16

Get sample
A5970AD SO-8 Tube
Active
1.363 10000 EAR99 CHINA Check Availability

Distributor availability ofA5970AD

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1984 1 Order Now
MOUSER WORLDWIDE 1684 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

1984

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1684

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-16

Buy now

A5970ADTR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

1.363*

Distributor availability ofA5970ADTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3063 1 Order Now
ARROW EUROPE 2000 0 Order Now
MOUSER WORLDWIDE 2485 1 Order Now
Farnell Element14 EUROPE 101 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

3063

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

2485

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

101

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-16

Marketing Status

Active

Unit Price (US$)

1.363

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

A5970AD

Package

SO-8

Packing Type

Tube

Unit Price (US$)

1.363*

Distributor availability ofA5970AD

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1984 1 Order Now
MOUSER WORLDWIDE 1684 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

1984

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1684

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-16

Marketing Status

Active

Unit Price (US$)

1.363

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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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS5812
      Up to 1 A step down-switching regulator for automotive applications
      5.0
      992.55 KB
      PDF
      DS5812

      Up to 1 A step down-switching regulator for automotive applications

    • Description Version Size Action
      AN3288
      g-Brake Lights: an adaptive rear lighting system based on the AIS326DQ inertial sensor and the STM8AF5168 MCU
      2.1
      1.05 MB
      PDF
      AN3288

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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
      A798x, A597x switching regulators for car power management 1.0
      714.2 KB
      PDF
      Up to 3 A switching step-down regulators 1.0
      739.58 KB
      PDF

      A798x, A597x switching regulators for car power management

      Up to 3 A switching step-down regulators

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF
      Switching Converters (DC-DC) – Quick Reference Guide 1.0
      481.92 KB
      PDF

      Electric vehicle (EV) ecosystem

      Switching Converters (DC-DC) – Quick Reference Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
A5970AD
Active
SO-8 Automotive Ecopack2
A5970ADTR
Active
SO-8 Automotive Ecopack2

A5970AD

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

A5970ADTR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Automotive

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.