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UC3854B - ADVANCED HIGH-POWER FACTOR PREREGULATOR

Download the UC3854B datasheet PDF. This datasheet also covers the UC3854A variant, as both devices belong to the same advanced high-power factor preregulator family and are provided as variant models within a single manufacturer datasheet.

General Description

The UC3854A/B products are pin compatible enhanced versions of the UC3854.

Like the UC3854, these products provide all of the functions necessary for active power factor corrected preregulators.

Key Features

  • 1.
  • Controls Boost PWM to Near-Unity Power Factor.
  • Limits Line Current Distortion To.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UC3854A-etcTI.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
UC3854B Enhanced High Power Factor Preregulator UNITRODE
UC3854 ENHANCED HIGH POWER FACTOR PREREGULATOR Unisonic Technologies
UC3854A Enhanced High Power Factor Preregulator UNITRODE
UC3851 PWM Controller UNITRODE
UC3852 High Power-Factor Preregulator UNITRODE

Other Datasheets by Texas Instruments

Part Number Description
UC3854 High-Power Factor Preregulator
UC3854A ADVANCED HIGH-POWER FACTOR PREREGULATOR
UC385-1 Fast Transient Response 5-A Low-Dropout Regulator
UC385-2 Fast Transient Response 5-A Low-Dropout Regulator
UC385-3 Fast Transient Response 5-A Low-Dropout Regulator

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.

View original datasheet text
www.ti.com UC1854A UC2854A, UC2854B UC3854A, UC3854B SLUS329E – MONTH 2003 – REVISED JANUARY 2008 ADVANCED HIGH-POWER FACTOR PREREGULATOR FEATURES 1 • Controls Boost PWM to Near-Unity Power Factor • Limits Line Current Distortion To <3% • World-Wide Operation Without Switches • Accurate Power Limiting • Fixed-Frequency Average Current-Mode Control • High Bandwidth (5 MHz), Low-Offset Current Amplifier • Integrated Current- and Voltage-Amplifier Output Clamps • Multiplier Improvements: Linearity, 500 mV VAC Offset (Eliminates External Resistor), 0 V to 5 V Multout Common-Mode Range • VREF GOOD Comparator • Faster and Improved Accuracy ENABLE Comparator • UVLO Options (16 V/10 V or 10.5 V/10 V) • 300-µA Start-Up Supply Current BLOCK DIAGRAM VCC (A) 16 V / 10 V (B) 10.