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MC34262 - POWER FACTOR CONTROLLERS

General Description

power converter applications.

Key Features

  • output over voltage protection, input UVLO with hysteresis, cycle-by-cycle current limiting, multiplier output clamp that limits maximum peak switch current, and a drive output high state clamp for.

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UNISONIC TECHNOLOGIES CO., LTD MC34262 Preliminary POWER FACTOR CONTROLLERS CMOS IC  DESCRIPTION The UTC MC34262 is an active power factor controller that functions as a boost preconverter in electronic ballast and in off-line power converter applications. These integrated circuits feature an internal startup timer for stand-alone applications, one quadrant multiplier for near unity power factor, zero current detector to ensure critical conduction operation, transconductance error amplifier, quick start circuit for enhanced startup, trimmed internal bandgap reference, current sensing comparator, and a totem pole output ideally suited for driving a power MOSFET. The multi-protection function of UTC MC34262 can greatly enhance the system reliability and safety.