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19-3344; Rev 2; 10/08
KIT ATION EVALU LE B A IL A AV
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2-Channel Temperature Monitor with Dual Automatic PWM Fan-Speed Controller
General Description
The MAX6640 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. The 2-wire serial interface accepts standard System Management Bus (SMBus TM ) write byte, read byte, send byte, and receive byte commands to read the temperature data and program the alarm thresholds. Temperature data can be read at any time over the SMBus, and three programmable alarm outputs can be used to generate interrupts, throttle signals, or overtemperature shutdown signals.
MAX6640 Datasheet
