MC33261 Datasheet PDF - Motorola POWER FACTOR CONTROLLERS Specs

MC33261 - POWER FACTOR CONTROLLERS

Datasheet Summary

Description

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.

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 MC34261 MC33261 POWER FACTOR.

Datasheet Details

Part number	MC33261
Manufacturer	Motorola
File Size	309.03 KB
Description	POWER FACTOR CONTROLLERS
Datasheet	MC33261 Datasheet
Additional preview pages of the MC33261 datasheet.

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Full PDF Text Transcription

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Order this document by MC34261/D Power Factor Controllers The MC34261/MC33261 are active power factor controllers specifically designed for use as a preconverter in electronic ballast and in off–line power converter applications. These integrated circuits feature an internal startup timer, a one quadrant multiplier for near unity power factor, zero current detector to ensure critical conduction operation, high gain error amplifier, trimmed internal bandgap reference, current sensing comparator, and a totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input undervoltage lockout with hysteresis, cycle–by–cycle current limiting, and a latch for single pulse metering.

Published: Jun 30, 2005 |