P82CF201 Description
The P82CF201 is a 20-pin single-chip dual digital fan controller designed for use with brushless DC fan motors. A thermistor (or temperature resistive sensor) connected to the RthermC input provides the required resistance of 10K to 1.75 KΩ for 30% to 98% PWM duty cycle. With temperature less than 25 °C (thermistor resistance more than 10 KΩ) and THRESHOLD is set to LOW, the fan will be off.
P82CF201 Key Features
- Constant temperature monitoring ensure reliable motor start-up at
- Constant fan sensing protect against fan failure and fault condition
- Over temperature and fan fail output pin
- 20 mA direct drive to LED indicators for fan power supply failure
- On-chip power-on reset allows operation with no external
- The watchdog timer performs self-check and reset function
- On-chip oscillator allows operations with no external oscillator
- Supports low cost NTC thermistors (for PTC use P82CF202)
- Temperature proportional fan speed control resulting in low
- Constant cooling (when THRESHOLD pin is not connected or tied