Fairchild Semiconductor UC3525A SMPS Controller Datasheet

UC3525A is a monolithic integrated circuit that includes all of the control circuit necessary for a pulse width modulating regulator. There are a voltage reference, an error amplifier, a pulse width modulator, an oscillator, under-voltage lockout, soft start circuit, and output drivers in the chip.


Fairchild Semiconductor UC3525A SMPS Controller Datasheet - cover page
Brand
Fairchild
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
8
File format
PDF
File size
53 KB
Published
08 August, 2012
Updated
13 October, 2026
Model
UC3525A
MD5 checksum
40D24325E43CFB4AA12B76D3FAFAA769

About this manual

The UC3525A is a monolithic integrated circuit designed to include all control circuits necessary for a pulse width modulating regulator. The chip integrates a voltage reference, error amplifier, pulse width modulator, oscillator, under-voltage lockout, soft start circuit, and output drivers. It is available in a 16-DIP package.

What's inside

  • Features
  • Internal Block Diagram
  • Absolute Maximum Ratings
  • Electrical Characteristics
  • Test Circuit
  • Mechanical Dimensions
  • Ordering Information
  • Life Support Policy

Specifications

Reference Output Voltage5.0 V (Typ)
Maximum Frequency400 KHz
Operating Temperature0 ~ +70 °C
Supply Voltage8 to 35V

Frequently asked questions

What is the typical reference output voltage?

The typical reference output voltage is 5.1V.

What is the maximum operating frequency?

The maximum frequency is 430 KHz with a 2KΩ resistor and 470pF capacitor.

What is the operating temperature range?

The operating temperature range is 0 to +70 °C.

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