TC647 - PWM Fan Speed Controller

Product Overview

Microchip

Part number	TC647
Manufacturer	Microchip
File Size	478.09 KB
Description	PWM Fan Speed Controller
Datasheet	TC647 Datasheet
Additional preview pages of the TC647 datasheet.

The TC647 is a switch mode, fan speed controller for use with brushless DC fans.

Temperature proportional speed control is accomplished using pulse width modulation (PWM).

A thermistor (or other voltage output temperature sensor) connected to VIN furnishes the required control voltage of 1.25V to 2.

Temperature Proportional Fan Speed for Acoustic Control and Longer Fan Life.
Efficient PWM Fan Drive.
3.0V to 5.5V Supply Range: - Fan Voltage Independent of TC647 Supply Voltage - Supports any Fan Voltage.
FanSense™ Technology Fault Detection Circuits Protect Against Fan Failure and Aid System Testing.
Shutdown Mode for "Green" Systems.
Supports Low Cost NTC/PTC Thermistors.
Space Saving 8-Pin MSOP Package TC647 Package Types SOIC.

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Published: Aug 3, 2005 |