MC33261 Datasheet (ON Semiconductor) - Power Factor Controllers

MC33261, Power Factor Controllers

Introduction Most electronic ballasts and switching power supplies use a bridge rectifier and a filter capacitor to derive raw dc voltage from the utility ac line.

This simple rectifying circuit draws power from the line when the instantaneous ac voltage exceeds the capacitor’s voltage.

This occurs

MC33261 Features

* consisting of input undervoltage lockout with hysteresis, cycle

* by

* cycle current limiting, and a latch for single pulse metering. These devices are available in dual

* in

* line and surface mount plastic packages.

* Internal Startup Timer

* One Quadrant Mu