STMicroelectronics L4974A 3.5A Switching Regulator Datasheet

The L4974A is a 600V switching regulator with a maximum output current of 3.5A and an output voltage range of 5.1V to 40V. It features high efficiency, high switching frequency, and low standby current.


STMicroelectronics L4974A 3.5A Switching Regulator Datasheet - cover page
Brand
STMicroelectronics
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
22
File format
PDF
File size
6.5 MB
Published
10 August, 2012
Updated
30 September, 2023
Model
L4974A
MD5 checksum
C33C9A1D05EDC5A56AA4FFB96698A227

About this manual

The L4974A is a 3.5A monolithic stepdown switching regulator designed for microprocessor-based systems. It utilizes BCD mixed technology to integrate isolated vertical DMOS power transistors with mixed CMOS/Bipolar transistors, enabling very high efficiency and fast switching times up to 200kHz. The device delivers an adjustable output voltage ranging from 5.1V to 40V.

What's inside

  • Description
  • Absolute Maximum Ratings
  • Pin Functions
  • Circuit Operation
  • Electrical Characteristics
  • Thermal Data
  • Block Diagram

Specifications

Output Current3.5A
Output Voltage Range5.1V to 40V
Switching FrequencyUp to 200kHz
Reference Voltage5.1V + 2%
Package TypePowerdip 16 + 2+ 2
Maximum Power Dissipation5W

Frequently asked questions

What is the maximum output current of the L4974A?

The device delivers a maximum output current of 3.5A.

What is the output voltage range?

The output voltage is variable from 5.1V to 40V.

What is the maximum switching frequency?

Efficient operation is possible at switching frequencies up to 200kHz.

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