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UC3854B

Part Number	UC3854B
Manufacturer	UNITRODE
Description	Enhanced High Power Factor Preregulator
Published	Oct 17, 2015
Detailed Description	Enhanced High Power Factor Preregulator UC1854A/B UC2854A/B UC3854A/B FEATURES • Controls Boost PWM to Near Unity Powe...
Datasheet	UC3854B PDF File

Overview

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 10...

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