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UC1854B - Enhanced High Power Factor Preregulator

This page provides the datasheet information for the UC1854B, a member of the UC1854A Enhanced High Power Factor Preregulator family.

Datasheet Summary

Description

The UC1854A/B products are pin compatible enhanced versions of the UC1854.

Like the UC1854, these products provide all of the functions necessary for active power factor corrected preregulators.

Features

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

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Datasheet preview – UC1854B

Datasheet Details

Part number UC1854B
Manufacturer UNITRODE
File Size Direct Link
Description Enhanced High Power Factor Preregulator
Datasheet download datasheet UC1854B Datasheet
Additional preview pages of the UC1854B datasheet.

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Full PDF Text Transcription

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Enhanced High Power Factor Preregulator UC1854A/B UC2854A/B UC3854A/B FEATURES • 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 (5MHz), Low Offset Current Amplifier • Integrated Current and Voltage Amp Output Clamps • Multiplier Improvements: Linearity, 500mV VAC Offset (eliminates external resistor), 0-5V Multout Common Mode Range • VREF "GOOD" Comparator • Faster and Improved Accuracy ENABLE Comparator • UVLO Threshold Options (16/10V / 10.5/10V) • 300µA Startup Supply Current UVLO Turn on UVLO Turn off UC1854A 16V 10V UC1854B 10.
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