NVT224 Datasheet (ON Semiconductor) - Remote Thermal Monitor and Fan Controller

NVT224, Remote Thermal Monitor and Fan Controller

Digital Input (Open Drain).

SMBus serial clock input.

Requires SMBus pullup.

Ground Pin.

Power Supply.

VCC is also monitored through this pin.

Digital Input (Open Drain).

Fan tachometer input to measure speed of Fan 3.

PWM2: Digital Output (Open Drain).

Requires 10 kW typical pullup.

Pulse *w

NVT224 dbCOOLt Remote Thermal Monitor and Fan Controller The NVT224 dbCOOL controller is a thermal monitor and multiple PWM fan controller for noise sensitive or power sensitive applications requiring active system cooling.

The NVT224 can drive a fan using either a low or high frequency drive signal, monitor the temperature of up to two remote sensor diodes plus its own internal temperature, and measure and control the speed of up to four fans so that they operate at the lowest

NVT224 Features

* Controls and Monitors Up to 4 Fans

* High and Low Frequency Fan Drive Signal

* 1 On

* Chip and 2 Remote Temperature Sensors

* Extended Temperature Measurement Range, Up to 191°C

* Automatic Fan Speed Control Mode Controls System Cooling Based on Measur