General Description
The MAX6639 monitors its own temperature and one external diode-connected transistor or the temperatures of two external diode-connected transistors, typically available in CPUs, FPGAs, or GPUs.

FEATUREs
♦ Two Thermal-Diode Inputs
♦ Up to 25kHz PWM Output Frequency
♦ Three 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
♦ Temperature Monitoring Begins at POR for
   FailSafe System Protection
♦ OT and THERM Outputs for Throttling or Shutdown
♦ Measures Temperatures Up to +150°C
♦ MAX6639F is Optimized for n = 1.021 for Penryn
   Compatibility

APPLICATIONs
   Desktop Computers
   Notebook Computers
   Projectors
   Servers
   Networking Equipment