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UC1852

Part Number	UC1852
Manufacturer	UNITRODE
Description	High Power-Factor Preregulator
Published	Apr 21, 2020
Detailed Description	High Power-Factor Preregulator UC1852 UC2852 UC3852 FEATURES • Low-Cost Power Factor Correction • Power Factor Greater...
Datasheet	UC1852 PDF File

Overview

High Power-Factor Preregulator UC1852 UC2852 UC3852 FEATURES • Low-Cost Power Factor Correction • Power Factor Greater Than 0.
99 • Few External Parts Required • Controlled On-Time Boost PWM • Zero-Current Switching • Limited Peak Current • Min and Max Frequency Limits • Starting Current Less Than 1mA • High-Current FET Drive Output • Under-Voltage Lockout DESCRIPTION The UC1852 provides a low-cost solution to active power-factor correction (PFC) for systems that would otherwise draw high peak current pulses from AC power lines.
This circuit implements zero-current switched boost conversion, producing sinusoidal input currents with a minimum of external components, while keeping peak curre...

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