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  • The A5974AD is a step-down monolithic power switching regulator with a minimum switch current limit of 2.5 A, it is therefore 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 a HSOP8 package with exposed frame, that allows to reduce the RTHJ-A 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 500 kHz. Having a minimum input voltage of only 4 V, it fits automotive applications requiring 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)
    • 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
    • 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

Sample & Buy

Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
A5974ADTR PowerSO-8 Tape And Reel
Active
1.721 10000 EAR99 CHINA No availability of distributors reported, please contact our sales office
A5974AD PowerSO-8 Tube
Active
1.721 10000 EAR99 CHINA No availability of distributors reported, please contact our sales office

A5974ADTR

Package

PowerSO-8

Packing Type

Tape And Reel

Unit Price (US$)

1.721*

Marketing Status

Active

Unit Price (US$)

1.721

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

A5974AD

Package

PowerSO-8

Packing Type

Tube

Unit Price (US$)

1.721*

Marketing Status

Active

Unit Price (US$)

1.721

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.

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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS7198
      Up to 2 A step-down switching regulator for automotive applications
      1.0
      1.68 MB
      PDF
      DS7198

      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**
A5974AD
Active
PowerSO-8 Automotive Ecopack2
A5974ADTR
Active
PowerSO-8 Automotive Ecopack2

A5974AD

Package:

PowerSO-8

Material Declaration**:

Marketing Status

Active

Package

PowerSO-8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

A5974ADTR

Package:

PowerSO-8

Material Declaration**:

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.