Up to 2 A step down switching regulator for automotive applications

Download datasheet

Sample and Buy from our eStore

Sample & Buy
Overview
Tools & Software
Resources
Solutions
Quality & Reliability
Sales Briefcase
eDesignSuite
Get Started
Sample & Buy
Partner products
  • The A5973D is a step-down monolithic power switching regulator with a minimum switch current limit of 2.25 A so it is able to deliver up to 2 A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to 35 V. The high current level is also achieved thanks to an HSOP8 package with exposed frame, that allows to reduce the Rth(JA)down to approximately 40 °C/W. 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 250 kHz. Having a minimum input voltage of 4 V only it fits the automotive applications requiring the device operation even in cold crank conditions. A 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)
    • 2 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 35 V
    • Low dropout operation: 100% duty cycle
    • 250 kHz internally fixed frequency
    • Voltage feedforward
    • Zero load current operation
    • Internal current limiting
    • Inhibit for zero current consumption
    • Synchronization
    • Protection against feedback disconnection
    • Thermal shutdown

Circuit Diagram

Download Download

Sample & Buy

Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
A5973D PowerSO-8 Tube
Active
1.463 10000 EAR99 CHINA Check Availability

Distributor availability ofA5973D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2000 1 Order Now
AVNET AMERICA 909 0 Order Now
ANGLIA Live EUROPE 3 1 Order Now

Distributor reported inventory date: 2019-09-15

Distributor Name

DIGIKEY

Stock

2000

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

909

Min.Order

0

Region

AMERICA Order Now

ANGLIA Live

Stock

3

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-15

Buy now
A5973D013TR PowerSO-8 Tape And Reel
Active
1.463 10000 EAR99 CHINA Check Availability

Distributor availability ofA5973D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4308 1 Order Now
ARROW EUROPE 5000 0 Order Now
MOUSER WORLDWIDE 4460 1 Order Now
Farnell Element14 EUROPE 4911 1 Order Now

Distributor reported inventory date: 2019-09-15

Distributor Name

DIGIKEY

Stock

4308

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

5000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

4460

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4911

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-15

Get sample

A5973D

Package

PowerSO-8

Packing Type

Tube

Unit Price (US$)

1.463*

Distributor availability ofA5973D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2000 1 Order Now
AVNET AMERICA 909 0 Order Now
ANGLIA Live EUROPE 3 1 Order Now

Distributor reported inventory date: 2019-09-15

Distributor Name

DIGIKEY

Stock

2000

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

909

Min.Order

0

Region

AMERICA Order Now

ANGLIA Live

Stock

3

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-15

Marketing Status

Active

Unit Price (US$)

1.463

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

A5973D013TR

Package

PowerSO-8

Packing Type

Tape And Reel

Unit Price (US$)

1.463*

Distributor availability ofA5973D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4308 1 Order Now
ARROW EUROPE 5000 0 Order Now
MOUSER WORLDWIDE 4460 1 Order Now
Farnell Element14 EUROPE 4911 1 Order Now

Distributor reported inventory date: 2019-09-15

Distributor Name

DIGIKEY

Stock

4308

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

5000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

4460

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4911

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-15

Marketing Status

Active

Unit Price (US$)

1.463

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

Education

Product included in our Longevity Program.

Featured Products

Recommended for you

Related Applications

Smart Farming

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS5501
      Up to 2 A step-down switching regulator for automotive applications
      9.0
      1.29 MB
      PDF
      DS5501

      Up to 2 A step-down switching regulator for automotive applications

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**
A5973D
Active
PowerSO-8 Automotive Ecopack2
A5973D013TR
Active
PowerSO-8 Automotive Ecopack2

A5973D

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

A5973D013TR

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-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.