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TC647 - PWM Fan Speed Controller

Description

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.

Features

  • 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.

📥 Download Datasheet

Datasheet Details

Part number TC647
Manufacturer Microchip
File Size 478.09 KB
Description PWM Fan Speed Controller
Datasheet download datasheet TC647 Datasheet

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Full PDF Text Transcription

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M Features • 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/PDIP/MSOP VIN CF VMIN GND 1 2 3 4 8 VDD VOUT FAULT SENSE PWM Fan Speed Controller with FanSense™ Technology TC647 7 6 5 General Description 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).
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