TC649 View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

TC649

PWM Fan Speed Controller with Auto-Shutdown and FanSense™ Technology

Microchip Technology 

TC649

Functional Block Diagram

VIN

TC649

VDD

CF

VAS

GND

–

PWM

+

Control

Logic

Clock

Generator

–

+

–

+

VSHDN

3 x TPWM

Timer

SHDN

Start-up

Timer

Missing

Pulse

Detect

10k

70mV (typ.)

VOUT

FAULT

SENSE

DS21449C-page 2

 2002 Microchip Technology Inc.

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