The ADT7466 dBCool® Remote Thermal Controller and Voltage Monitor is a complete thermal monitor and dual fan controller for low acoustic noise notebook PCs. It features the ability to monitor two analog voltages or thermistor temperature inputs and control and monitor the speed of up to two fans. The controller also has an automatic fan speed control mode that controls system cooling based on measured temperature. It has a thermal protection feature via the THERM output that monitors the performance impact of the Intel® Pentium® 4 processor thermal control circuit via the PROCHOT input. It also includes an SMBus 1.1 serial interface and 3-wire fan speed measurement.
The ADT7466 dBCool® Remote Thermal Controller and Voltage Monitor provides complete thermal monitoring and dual‑fan control for noise‑sensitive applications. It can monitor two analog voltages or thermistor inputs, two remote temperature sensors, and its own supply voltage, while controlling up to two fans with automatic speed regulation and an enhanced acoustic mode.
The device features an SMBus 1.1 serial interface, 8‑bit DAC fan‑speed outputs, and a range of programmable limits and alerts. Detailed specifications include supply voltage ranges, temperature resolution of 0.25 °C, and fan‑RPM conversion tables, making it suitable for notebook PCs and other low‑noise systems.
| Supply Voltage | 3.0 V min, 3.3 V typ, 5.5 V max |
|---|---|
| Supply Current | 1.4 mA min, 3 mA typ (interface inactive, ADC active) |
| Local Sensor Accuracy | +1 °C (20 °C < Ta < 60 °C) |
| Temperature Resolution | 0.25 °C |
| Drive Output Voltage Range | 0 V to 2.2 V |
| Serial Bus Clock Frequency | 400 kHz |
The device operates from 3.0 V minimum up to 5.5 V maximum, with a typical value of 3.3 V.
It can control and monitor the speed of up to two fans.
The temperature conversion resolution is 0.25 °C.
The device uses an SMBus 1.1 serial interface.