STMicroelectronics A5970D Datasheet

A5970D is a 1A step down switching regulator for automotive applications, it is qualified following the AEC-Q100 requirements, the input voltage range is from 4V to 36V, the output voltage range is from 1.235V to VIN, low dropout operation, 100% duty cycle, internally fixed frequency 250kHz, voltage feedforward, zero load current operation, internal current limiting, inhibit for zero current consumption, synchronization, protection against feedback disconnection, thermal shutdown


STMicroelectronics A5970D Datasheet - cover page
Brand
STMicroelectronics
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
41
File format
PDF
File size
1.3 MB
Published
10 August, 2012
Updated
30 September, 2023
MD5 checksum
CEC6F137561EF54DE27637063F01D875

About this manual

The A5970D is a monolithic power switching regulator designed for automotive applications, featuring a qualified AEC-Q100 status. It operates with an input voltage range of 4 V to 36 V and provides up to 1 A of DC output current. The device utilizes an internal p-channel DMOS transistor and a fixed 250 kHz switching frequency to minimize external component size. Key features include low dropout operation, zero load current consumption, and comprehensive protection mechanisms such as thermal shutdown and feedback disconnection protection.

What's inside

  • Pin settings
  • Electrical data
  • Electrical characteristics
  • Functional description
  • Additional features and protection
  • Closing the loop
  • Application information
  • Typical characteristics
  • Package mechanical data
  • Revision history

Specifications

Output current1 A
Input voltage range4 V to 36 V
Switching frequency250 kHz
Output voltage range1.235 V to Vin
Maximum output current limit1.35 A
Efficiency90 %
Operating junction temperature-40 to 150 °C

Frequently asked questions

What is the minimum input voltage for the A5970D?

The device can operate with a minimum input voltage of 4 V, making it suitable for cold crank conditions.

Is the A5970D qualified for automotive use?

Yes, the device is qualified following the AEC-Q100 requirements.

What happens if the load is disconnected?

The device supports zero load current operation to minimize power consumption.

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