UC3854 - High Power Factor Preregulator

Product Code: Components-Mixed-UC3854

  • UC3854 - High Power Factor Preregulator

Key Features

  • Control Boost PWM to 0.99 Power Factor
  • Limit Line Current Distortion To <5%
  • World-Wide Operation Without Switches
  • Feed-Forward Line Regulation
  • Average Current-Mode Control
  • Low Noise Sensitivity
  • Low Start-Up Supply Current
  • Fixed-Frequency PWM Drive
  • Low-Offset Analog Multiplier/Divider
  • 1A Totem-Pole Gate Driver
  • Precision Voltage Reference

View more Features
  • Availability: In Stock
Delivered in 7-10 business days

(Delivery time may vary on shipping address)
  • ₹160.00

  • 15 Day Replacement Guarantee

Related Products


The UC3854 provides active power factor correction for power systems that otherwise would draw non-sinusoidal current from sinusoidal power lines. This device implements all the control functions necessary to build a power supply capable of optimally using available power-line current while minimizing line-current distortion. To do this, the UC3854 contains a voltage amplifier, an analog multiplier/divider, a current amplifier, and a fixed-frequency PWM. In addition, the UC3854 contains a power MOSFET compatible gate driver, 7.5V reference,line anticipator, load-enable comparator, low-supply detector,and over-current comparator.

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Tags: UC3854 - High-Power-Factor-Preregulator, UC3854, UC1854, Mixed-Power-IC, High-Power-Factor-Regulator, Digital-IC