TC642 - PWM Fan Speed Controller

Product Overview

Microchip

Part number	TC642
Manufacturer	Microchip
File Size	485.37 KB
Description	PWM Fan Speed Controller
Datasheet	TC642 Datasheet
Additional preview pages of the TC642 datasheet.

The TC642 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 the VIN input furnishes the required control voltage of 1.

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 TC642 Supply Voltage - Supports any Fan Voltage.
FanSense™ 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.
Over-temperature Indicatio.

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Published: Aug 3, 2005 |