Datasheet4U Logo Datasheet4U.com

TC642 - PWM Fan Speed Controller

General Description

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.

Key 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 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.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
TC6102 2 PORT 10/100 M ETHERNET SWITCH CONTROLLER TMI
TC612 NPN Transistor ETC
TC6133AF AREA IMAGE SENSOR CCD Toshiba Semiconductor
TC618BS Integrated brushed DC motor driver ChipSourceTek
TC618CS Single Channel DC Motor Driver ChipSourceTek

Other Datasheets by Microchip Technology

Part Number Description
TC642B PWM Fan Speed Controllers
TC643 INTEGRATED FAN / MOTOR DRIVER
TC646 PWM Fan Speed Controller
TC647 PWM Fan Speed Controller
TC647B PWM Fan Speed Controllers

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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 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 Indication TC642 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 TC642 7 6 5 General Description 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).