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Conv DC-DC 4V to 36V Step Down Single-Out 1.235V to 36V 1.5A Automotive 8-Pin SO N Tube

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A5972D General Description

The A5972D is a step-down monolithic power switching regulator with a minimum switch current limit of 1.8 A so it is able to deliver up to 1.5 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 a 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.

STMicroelectronics, Inc Inventory

Key Features

  • Qualified following the AEC-Q100 requirements (see PPAP for more details)
  • 1.5 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
  • 250 kHz internally fixed frequency
  • Voltage feedforward
  • Zero load current operation
  • Internal current limiting
  • Inhibit for zero current consumption
  • Protection against feedback disconnection
  • Thermal shutdown
STMicroelectronics, Inc Original Stock
STMicroelectronics, Inc Inventory


Category Integrated Circuits (ICs)Power Management (PMIC)Voltage Regulators - DC DC Switching Regulators Mfr STMicroelectronics
Series Automotive, AEC-Q100 Package Tube
Product Status Obsolete Function Step-Down
Output Configuration Positive Topology Buck
Output Type Adjustable Number of Outputs 1
Voltage - Input (Min) 4V Voltage - Input (Max) 36V
Voltage - Output (Min/Fixed) 1.235V Voltage - Output (Max) 36V
Current - Output 1.5A Frequency - Switching 250kHz
Synchronous Rectifier No Operating Temperature -40°C ~ 150°C (TJ)
Mounting Type Surface Mount Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC Base Product Number A5972
Manufacturer STMicroelectronics Product Category Switching Voltage Regulators
RoHS Details Output Voltage Adjustable
Output Current 1.5 A Input Voltage, Max 36 V
Mounting Style SMD/SMT Switching Frequency 250 kHz
Quiescent Current 2.5 mA Minimum Operating Temperature - 40 C
Maximum Operating Temperature + 150 C Qualification AEC-Q100
Input Voltage, Min 4 V Brand STMicroelectronics
Product Type Switching Voltage Regulators Factory Pack Quantity 2000
Subcategory PMIC - Power Management ICs


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

  • UPS

  • EMS

  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

    Tape and Reel

  • Cut Tape

    Cut Tape

  • Tube or Tray

    Tube or Tray

Ratings and Reviews

S**d Dec 17, 2020

The goods came after the completion of the order, i.e. By the deadline. Quality is normal. Shipping lame

B**y May 05, 2020

It is a pleasure dealing with Ashlea. We look forward to doing more business in the near future. We highly recommend dealing with this company.

D**n Sep 12, 2019

Still not tested was fast

L**y Jun 03, 2019

Cable, as ordered-2 m

E**n Dec 16, 2018

I haven't received the goods



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Buying Guide

  • What is the lifespan of A5972D?

    The lifespan of A5972D depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of A5972D?

    You can find it with PDF Datasheet for A5972D on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of A5972D?

    Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.

  • Can I purchase samples for testing?

    Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.

  • Where can I check the delivery after the order is completed?

    Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.

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