ADT7473 Datasheet - ON Semiconductor

ADT7473 Remote Thermal Monitor and Fan Control

Digital Input (Open Drain). SMBus serial clock input. Requires SMBus pullup. Ground Pin. 3 VCC Power Supply. Powered by 3.3 V. 4 TACH3 Digital Input (Open Drain). Fan tachometer input to measure speed of Fan 3. ADDR SELECT If in address select mode, the logic state of this pin defines the SMBus.

ADT7473 Remote Thermal Monitor and Fan Control The ADT7473/ADT7473 1 controller is a thermal monitor and multiple PWM fan controller for noise sensitive or power sensitive applications requiring active system cooling. The ADT7473/ADT7473 1 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 they operate at the lowest .

ADT7473 Features

* Controls and Monitors Up to 4 Fans

* High and Low Frequency Fan Drive Signal

* 1 On-Chip and 2 Remote Temperature Sensors

* Series Resistance Cancellation on the Remote Channel

* Extended Temperature Measurement Range, Up to 191°C

* Dynamic TMIN Cont

ADT7473-ONSemiconductor.pdf