TC642B - PWM Fan Speed Controllers

Product Overview

Microchip

Part number	TC642B
Manufacturer	Microchip
File Size	545.74 KB
Description	PWM Fan Speed Controllers
Datasheet	TC642B Datasheet
Additional preview pages of the TC642B datasheet.

The TC642B/TC647B devices are new versions of the existing TC642/TC647 fan speed controllers.

These devices are switch mode, fan speed controllers that incorporate a new fan auto-restart function.

Temperature-proportional speed control is accomplished using pulse width modulation.

Temperature-Proportional Fan Speed for Acoustic Noise Reduction and Longer Fan Life.
Efficient PWM Fan Drive.
3.0V to 5.5V Supply Range: - Fan Voltage Independent of TC642B/TC647B Supply Voltage - Supports any Fan Voltage.
FanSense™ Fault Detection Circuit Protects Against Fan Failure and Aids System Testing.
Shutdown Mode for "Green" Systems.
Supports Low Cost NTC/PTC Thermistors.
Over-Temperature Indication (TC642B only).

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Published: Feb 6, 2015 |