TC642B(2003) 查看數據表（PDF） - Microchip Technology

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产品描述 (功能)

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TC642B
(Rev.:2003)

PWM Fan Speed Controllers With Minimum Fan Speed, Fan Restart and FanSense™ Technology for Fault Detection

Microchip Technology 

TC642B/TC647B

Functional Block Diagram

TC642B/TC647B

VIN

VOTF

Note

CF

Clock

Generator

VMIN

VSHDN

GND

VDD

Control

Logic

3xTPWM

Timer

Note: The VOTF comparator

is for the TC642B device only.

VOUT

Start-up

Timer

Missing

Pulse

Detect

10 kΩ

70 mV

(typ)

FAULT

SENSE

DS21756B-page 2

 2003 Microchip Technology Inc.

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