The MAX6615/6 are 1°C accurate, dual-channel temperature monitor and fan controller devices from Maxim. Each new monitor/controller controls the speed of two cooling fans based on the temperatures either of two thermistors, or one thermistor and the device's internal temperature. The devices report temperature values in digital form using a 2-wire serial interface. To adjust the speed of the cooling fans, the temperature data controls the duty cycle of a PWM output signal. The devices also feature an overtemperature alarm output to generate interrupts, throttle signals, or shutdown signals. The MAX6615 comes in 16-pin QSOP package, while the MAX6616, which includes six GPIOs comes in the 24-pin QSOP. Both devices operate from 3 V to 5,5 V over -40 to +125°C, and consume 500 μA.
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