ADT7476ARQZ

The ADT7476ARQZ from On Semiconductor is a versatile integrated circuit serving as a remote thermal controller and voltage monitor. It is designed for applications requiring active system cooling, such as noise-sensitive or power-sensitive systems.

This device features the ability to monitor up to five voltages and control up to four fans, optimizing fan speed for minimum acoustic noise. It incorporates one on-chip and two remote temperature sensors, with an extended measurement range up to 191°C. The ADT7476ARQZ supports both high and low frequency fan drive signals and provides critical thermal protection through its bidirectional THERM pin.

Packaged in a 24-QSOP surface mount configuration, the ADT7476ARQZ operates from a 3V to 3.6V supply. Its functionality includes an SMBus output, 3-wire and 4-wire fan speed measurement, and limit comparison of monitored values. The device is Pb-Free and Halogen Free, meeting RoHS compliance standards.

Key specifications include an operating temperature range of -40°C to 125°C, an accuracy of ±2.5%, and internal and external sensor types. It is suitable for applications where precise thermal management and fan speed control are essential.