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MAX6639

Maxim Integrated Products
Part Number MAX6639
Manufacturer Maxim Integrated Products
Description 2-Channel Temperature Monitor
Published Jan 8, 2007
Detailed Description www.DataSheet4U.com 19-3682; Rev 0; 5/05 2-Channel Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller ...
Datasheet PDF File MAX6639 PDF File

MAX6639
MAX6639

Overview
www.
DataSheet4U.
com 19-3682; Rev 0; 5/05 2-Channel Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller 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.
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.
The temperature data is also used by the internal dualPWM fan-speed controller to adjust the speed of up to two cooling fans, thereby minimizing noise when the system is running cool, but providing maximum cooling when power dissipation increases.
Speed control is accomplished ...


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