Overview
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
eDesignSuite
Get Started
Partner products
Sales Briefcase
  • 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

Recommended for you

Related Applications

Smart Farming

EDA Symbols, Footprints and 3D Models

STMicroelectronics - A5973D

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**
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

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
A5973D Available at 4 distributors

Distributor availability ofA5973D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1394 1 Order Now
COMPEL EUROPE 66 1 Order Now
AVNET AMERICA 909 0 Order Now
ANGLIA Live EUROPE 3 1 Order Now

Distributor reported inventory date: 2020-10-26

Distributor Name

DIGIKEY

Stock

1394

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

66

Min.Order

1

Region

EUROPE 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: 2020-10-26

Active
EAR99 NEC Tube PowerSO-8 -40 125 PHILIPPINES 1.463 / 1k
A5973D013TR Available at 3 distributors

Distributor availability ofA5973D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5000 1 Order Now
MOUSER WORLDWIDE 2480 1 Order Now
Farnell Element14 EUROPE 2542 1 Order Now

Distributor reported inventory date: 2020-10-26

Distributor Name

DIGIKEY

Stock

5000

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2480

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2542

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-26

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel PowerSO-8 -40 125 PHILIPPINES 1.463 / 1k

A5973D

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.463 / 1k

Distributor availability ofA5973D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1394 1 Order Now
COMPEL EUROPE 66 1 Order Now
AVNET AMERICA 909 0 Order Now
ANGLIA Live EUROPE 3 1 Order Now

Distributor reported inventory date: 2020-10-26

Distributor Name

DIGIKEY

Stock

1394

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

66

Min.Order

1

Region

EUROPE 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: 2020-10-26

ECCN (EU)

NEC

Packing Type

Tube

Package

PowerSO-8

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

1.463 / 1k

Country of Origin

PHILIPPINES

A5973D013TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.463 / 1k

Distributor availability ofA5973D013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5000 1 Order Now
MOUSER WORLDWIDE 2480 1 Order Now
Farnell Element14 EUROPE 2542 1 Order Now

Distributor reported inventory date: 2020-10-26

Distributor Name

DIGIKEY

Stock

5000

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2480

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2542

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-26

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

PowerSO-8

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

1.463 / 1k

Country of Origin

PHILIPPINES

(*) 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