MC33261D

更新时间： 2024-09-23 00:01:07

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		控制器
页数	文件大小	规格书
12页	312K
描述
POWER FACTOR CONTROLLERS

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数据手册

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MC33261D 数据手册

Order this document by MC34261/D

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. These devices are available in dual–in–line and surface

mount plastic packages.

POWER FACTOR

CONTROLLERS

SEMICONDUCTOR

TECHNICAL DATA

• Internal Startup Timer

• One Quadrant Multiplier

• Zero Current Detector

P SUFFIX

PLASTIC PACKAGE

CASE 626

• Trimmed 2% Internal Bandgap Reference

• Totem Pole Output

• Undervoltage Lockout with Hysteresis

• Low Startup and Operating Current

• Pinout Equivalent to the SG3561

• Functional Equivalent to the TDA4817

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO–8)

PIN CONNECTIONS

Simplified Block Diagram

Voltage Feedback

Input

Zero Current Detector

Zero Current

Detect Input

Compensation

Drive Output

Multiplier Input

Current Sense

Input

Gnd

Zero Current

Detect Input

2.5V

Reference

Undervoltage

Lockout

(Top View)

Drive Output

Multiplier,

Latch,

PWM,

Timer,

Current Sense

Input

Logic

ORDERING INFORMATION

Operating

Temperature Range

Device

Package

ref

Error Amp

MC34261D

MC34261P

MC33261D

MC33261P

SO–8

Multiplier

Input

Voltage

Feedback

Input

Multiplier

T = 0° to +70°C

Plastic DIP

SO–8

Gnd

Compensation

= –40° to +85°C

Plastic DIP

Motorola, Inc. 1996

Rev 1

MOTOROLA ANALOG IC DEVICE DATA

12 3 4 5 6 7...12

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