STMicroelectronics SG3524 Regulating Pulse Width Modulators Datasheet

The SG3524 is an integrated controller for the construction of various power applications, such as flyback switching power supplies, forward switching power supplies, flyback transformer-coupled DC-DC converters, transformerless voltage doublers and polarity converters.


STMicroelectronics SG3524 Regulating Pulse Width Modulators Datasheet - cover page
Brand
STMicroelectronics
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
9
File format
PDF
File size
551 KB
Published
10 August, 2012
Updated
01 October, 2023
MD5 checksum
B5DB3E920574AEB2FF0F1DB9B5DB343C

About this manual

The SG3524 is a monolithic integrated circuit designed for regulating power supplies, inverters, and switching regulators. It incorporates all necessary functions for constructing these circuits, including an on-chip reference, error amplifier, programmable oscillator, and dual uncommitted output transistors for single-ended or push-pull applications. The device operates with a fixed frequency determined by external timing components and includes current-limiting and shut-down circuitry for protection.

What's inside

  • Description
  • Absolute Maximum Ratings
  • Electrical Characteristics
  • Principles of Operation
  • Recommended Operating Conditions
  • Typical Applications Data
  • Outline and Mechanical Data

Specifications

Maximum Frequency300 KHz
Reference Output Voltage5 V
Supply Voltage Range8 to 40V
Operating Ambient Temperature0 to 70 °C
Standby Current8 mA typical
Collector Output Current100 mA

Frequently asked questions

What is the frequency range of the SG3524?

The frequency range typically spans from 120Hz to 500KHz depending on the timing components used.

Can the SG3524 be used in push-pull applications?

Yes, the dual alternating outputs allow for either single-ended or push-pull applications.

What is the maximum duty cycle of the comparator?

The maximum duty cycle for each output is 45%.

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