MAX6639 Key Features
- 2 Thermal-Diode Inputs
- Up to 25kHz PWM Output Frequency
- 3 Selectable SMBus Addresses
- Local Temperature Sensor
- 1°C Remote Temperature Accuracy
- Two PWM Outputs for Fan Drive (Open Drain; Can be Pulled Up to +13.5V)
- Programmable Fan-Control Characteristics
- Automatic Fan Spin-Up Ensures Fan Start
- Controlled Rate-of-Change Ensures Unobtrusive Fan-Speed Adjustments
- ±3% Fan-Speed Measurement Accuracy