The MC33232 is the monolithic Integrated Circuit using the SMARTMOS® process as the new technology. And is active power factor controller specially design for use as off−line power converter application. This integrated circuit features an internal startup timer for stand−alone application, a one quadrant multiplier for near unity power factor, zero current detector to ensure critical condition operation, transconductance error amplifier, quickstart circuit for enhanced startup, trimmed internal bandgap reference, current sensing comparator, a totem pole output ideally suited for drive a power MOSFET, and a one shot−rigger circuit to eliminate a problem at the light loading.

Features

• One Shot−trigger Circuit to Eliminate a Problem at the Light Loading

• Overvoltage Comparator Eliminates Runaway Output Voltage

• Quickstart Circuit for Enhanced Startup

• Internal Startup Timer

• One Quadrant Multiplier

• Zero Current Detector

• Trimmed 2 Internal Bandgap Reference

• Totem Pole Output with High State Clamp

• Undervoltage Lockout with 6.0 V of Hysteresis

• Low Startup and Operating Current

• Pb−Free Packages are Available

MC33232属于集成电路（IC） > PFC（功率因数校正）。安森美半导体公司制造生产的MC33232PFC（功率因数校正）功率因数校正 (PFC) 是用于调整交流电路中的电压和电流之间的相位角，使之趋近于零的半导体器件。不同模式包括平均电流、边界导通、连续导通、临界导通、电流控制式频率折返、不连续和不连续导通，开关频率从 6 kHz 至 1.7 MHz 可调。