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Conv DC-DC 4.5V to 61V Synchronous Step Down Single-Out 0.8V to 61V 3A Automotive 16-Pin HTSSOP EP T/R

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A7987TR General Description

The A7987 is a step-down monolithic switching regulator that can deliver up to 3 A DC. The adjustable output voltage ranges from 0.8 V to VIN. The wide input voltage range and the almost 100% duty cycle capability meet the fail-safe specifications for automotive systems. The embedded switch-over feature on the VBIAS pin maximizes efficiency at light load. The adjustable current limitation, designed to select the inductor RMS current in accordance with the nominal output current, and the high switching frequency capability make the size of the application compact. Pulse-by-pulse current sensing with digital frequency fold-back implements an effective constant current protection over the different application conditions. The peak current fold-back decreases the stress of the power components in heavy short-circuit conditions. The PGOOD open collector output can also implement the output voltage sequencing during the power-up phase. Multiple devices can be synchronized sharing the SYNCH pin to prevent beating noise for low noise requirements such as in infotainment applications.3 A step down DC/DC switching regulator (VIN = 4.

STMicroelectronics, Inc Inventory

Key Features

  • 3 A DC output current
  • 4.5 V to 61 V operating input voltage
  • Adjustable fsw (250 kHz to 1.5 MHz)
  • Output voltage adjustable from 0.8 V to VIN
  • Synchronization
  • Adjustable soft-start time
  • Adjustable current limitation
  • VBIAS improves efficiency at light load
  • PGOOD open collector output
  • Digital frequency fold-back in short-circuit
  • Auto-recovery thermal shutdown
  • Qualified following AEC-Q100 requirements
STMicroelectronics, Inc Original Stock
STMicroelectronics, Inc Inventory


Category Integrated Circuits (ICs)Power Management (PMIC)DC DC Switching Controllers Mfr STMicroelectronics
Series Automotive, AEC-Q100 Package Tape & Reel (TR)Cut Tape (CT)Digi-Reel®
Product Status Active Output Type Transistor Driver
Function Step-Down Output Configuration Positive
Topology Buck-Boost Number of Outputs 1
Output Phases 1 Voltage - Supply (Vcc/Vdd) 4.5V ~ 61V
Frequency - Switching 250kHz ~ 1.5MHz Duty Cycle (Max) 100%
Synchronous Rectifier Yes Clock Sync Yes
Serial Interfaces - Control Features Current Limit, Enable, Frequency Control, Power Good, Soft Start
Operating Temperature -40°C ~ 150°C (TJ) Mounting Type Surface Mount
Package / Case 16-PowerTSSOP (0.173", 4.40mm Width) Supplier Device Package 16-HTSSOP
Base Product Number A7987 Pin Count 17
Package Category Small Outline Packages Released Date Dec 22, 2020
Last Modified Date Mar 7, 2023 4:10 PM UTC


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

Z**y Sep 02, 2019

I got well packed i haven't tried it yet but as soon as i try i'll leave comments

M**a Nov 06, 2018

They look excellent quality. Fast shipping.

G**n Oct 05, 2018

Soldering normally i have not checked yet i will add a review

Z**e Sep 09, 2018

Great. Honest seller.

L**e Aug 09, 2018

Delivery - 5 days. This product has not yet verified.I trust my Chinese friends and according to tradition I give a good rating.



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Buying Guide

  • What is the lifespan of A7987TR?

    The lifespan of A7987TR 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 A7987TR?

    You can find it with PDF Datasheet for A7987TR 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 A7987TR?

    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.

  • Where to view my order of A7987TR or my history order record?

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