TC652

TC652/TC653 Integrated Temperature Sensor & Brushless DC Fan Controller with FanSense™ Detect & Over-Temperature Features Integrated Temperature Sensing and Multi-speed Fan Control FanSense™ Fan Fault Detect Circuitry Built-in Over-Temperature Alert (TOVER) Temperature Proportional Fan Speed Control for Acoustic Noise Reduction and Longer Fan Life Pulse Width Modulation Output Drive for Cost and Power Savings Solid-State Temperature Sensing ±1°C (Typical) Accuracy from 25°C to +70°C 2.8V – 5.5V Operating Range TC653 includes Auto Fan Shutdown Low Operating Current: 50µA (Typical) Package Type MSOP VDD 1 FAULT 2 SHDN 3 GND 4 8 PWM TC652 TC653 7 GND 6 TOVER 5 SENSE General Description The TC652/TC653 are integrated temperature sensors and brushless DC fan speed controllers with FanSense™ technology. The TC652/TC653 measure their junction temperature and control the speed of the fan based on that temperature, making them especially suited for applications in modern electronic equipment. The FanSense™ Fan Fault detect circuitry eliminates the need for a more expensive 3-wire fan. Temperature data is converted from the on-chip thermal sensing element and translated into a fractional fan speed from 40% to 100%. A temperature selection guide in the data sheet is used to choose the low and high temperature limits to control the fan. The TC652/TC653 also include a single trip point over temperature alert (TOVER) that eliminates the need for additional temperat...