MC33368 Motorola, MC33368 Datasheet

MC33368

Manufacturer Part Number

MC33368

Description

HIGH VOLTAGE GREENLINEE POWER FACTOR CONTROLLER

Manufacturer

Motorola

Datasheet

1.MC33368.pdf (16 pages)

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Advance Information

High Voltage GreenLine

Power Factor Controller

boost preconverter in off–line power supply applications. MC33368 is

optimized for low power, high density power supplies requiring a minimum

board area, reduced component count and low power dissipation. The

narrow body SOIC package provides a small footprint. Integration of the high

voltage startup saves approximately 0.7 W of power compared to resistor

bootstrapped circuits.

one quadrant multiplier to force the line current to follow the instantaneous

line voltage a zero current detector to ensure critical conduction operation, a

transconductance error amplifier, a current sensing comparator, a 5.0 V

reference, an undervoltage lockout (UVLO) circuit which monitors the V CC

supply voltage and a CMOS driver for driving MOSFETs. The MC33368 also

includes a programmable output switching frequency clamp. Protection

features include an output overvoltage comparator to minimize overshoot, a

restart delay timer and cycle–by–cycle current limiting.

GreenLine is a trademark of Motorola, Inc.

This document contains information on a new product. Specifications and information herein

are subject to change without notice.

MOTOROLA ANALOG IC DEVICE DATA

The MC33368 is an active power factor controller that functions as a

The MC33368 features a watchdog timer to initiate output switching, a

Lossless Off–Line Startup

Output Overvoltage Comparator

Leading Edge Blanking (LEB) for Noise Immunity

Watchdog Timer to Initiate Switching

Restart Delay Timer

MC33368D

MC33368P

Device

ORDERING INFORMATION

Temperature Range

T J = –25 to +125 C

Operating

Package

DIP–16

SO–16

Motorola, Inc. 1997

Current Sense

Restart Delay

Zero Current

FACTOR CONTROLLER

GREENLINE

Voltage FB

5.0 V ref

Comp

AGnd

HIGH VOLTAGE

MC33368

Mult

PIN CONNECTIONS

SEMICONDUCTOR

TECHNICAL DATA

Order this document by MC33368/D

PLASTIC PACKAGE

CASE 751K

CASE 648

D SUFFIX

P SUFFIX

(DIP–16)

(SO–16)

(Top View)

POWER

Line

N/C

Frequency Clamp

V CC

Gate

PGnd

LEB

Line

Frequency Clamp

V CC

Gate

PGnd

LEB

Rev 2

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