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Es más frecuente que la confianza sea generada por la ignorancia que por el conocimiento: son los que conocen poco y no los que conocen mucho, los que afirman tan positivamente que este o aquel problema nunca será solucionado por la ciencia.

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Dual-Channel Temperature Monitors and Fan-Speed Controllers with Thermistor Inputs

SUNNYVALE, CA -Maxim Integrated Products introduces the MAX6615*/MAX6616, 1°C accurate, dual-channel temperature monitor and fan controllers. 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. For added flexibility, the MAX6616 features six GPIOs that can be used for setting POR states and controlling VID.

The combination of high accuracy, dual thermistor inputs, and dual PWM fan control makes the MAX6615 and MAX6616 the ideal choice for networking equipment, servers, and power supplies. The MAX6615/MAX6616 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. This function minimizes noise when the system is running cool, but provides maximum cooling when power dissipation increases. The devices also feature an overtemperature alarm output to generate interrupts, throttle signals, or shutdown signals.

The MAX6615 is offered in the 16-pin QSOP package, while the MAX6616 is packaged in the 24-pin QSOP. Both devices operate from a +3.0V to +5.5V supply voltage range over the -40°C to +125°C temperature range, and only consume 500µA (typ) of supply current. Prices start at $1.75 (2500-up, FOB USA).

Jueves, 30 Junio, 2005 - 07:43
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