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UC3853 - High Power Factor Preregulator

General Description

The UC3853 provides simple, yet high performance active power factor correction.

Using the same control technique as the UC1854, this 8-pin device exploits a simplified architecture and an internal oscillator to minimize external component count.

Key Features

  • Complete 8-pin Power Factor Solution.
  • Reduced External Components.
  • RMS Line Voltage Compensation.
  • Precision Multiplier/Squarer/Divider.
  • Internal 75kHz Synchronizable Oscillator.
  • Average Current Mode PWM Control.
  • Overvoltage Protection Comparator.
  • High Current, Clamped Gate Driver.

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Datasheet Details

Part number UC3853
Manufacturer Unitrode
File Size 395.35 KB
Description High Power Factor Preregulator
Datasheet download datasheet UC3853 Datasheet

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Other Datasheets by Unitrode

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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High Power Factor Preregulator UC1853 UC2853 UC3853 FEATURES • Complete 8-pin Power Factor Solution • Reduced External Components • RMS Line Voltage Compensation • Precision Multiplier/Squarer/Divider • Internal 75kHz Synchronizable Oscillator • Average Current Mode PWM Control • Overvoltage Protection Comparator • High Current, Clamped Gate Driver DESCRIPTION The UC3853 provides simple, yet high performance active power factor correction. Using the same control technique as the UC1854, this 8-pin device exploits a simplified architecture and an internal oscillator to minimize external component count.