TC654 Overview
The TC654 and TC655 are PWM mode fan speed controllers with FanSense technology for use with brushless DC fans. These devices implement temperature proportional fan speed control which lowers acoustic fan noise and increases fan life. The voltage at VIN (Pin 1) represents temperature and is typically provided by an external thermistor or voltage output temperature sensor.
TC654 Key Features
- Temperature Proportional Fan Speed for Reduced Acoustic Noise and Longer Fan Life
- FanSense™ Protects against Fan Failure and Eliminates the Need for 3-wire Fans
- Overtemperature Detection (TC655)
- Efficient PWM Fan Drive
- Provides RPM Data
- 2-Wire SMBus™-patible Interface
- Supports Any Fan Voltage
- Software Controlled Shutdown Mode for "Green"
- Supports Low-Cost NTC/PTC Thermistors
- Space Saving 10-Pin MSOP Package