ADT7473ARQZ-1

Thermal Management Overview

The ADT7473ARQZ-1 is a remote thermal monitor and multi-PWM fan controller manufactured by onsemi. It operates within a supply voltage range of 3 V to 3.6 V, with a maximum operating current of 3 mA. The device supports an extended temperature measurement range up to 191°C, featuring a typical accuracy of ±2.5°C over the -40°C to +125°C operating range. It utilizes a 10-bit ADC for 0.25°C resolution and communicates via a 2-wire I2C/SMBus interface. The component is housed in a QSOP-16 surface-mount package.

Thermal Management Feature Summary

• Monitors one internal and two remote temperature sensors using a 10-bit analog-to-digital converter.
• Controls up to four fans through three PWM outputs and four 16-bit counters.
• Supports high and low frequency drive signals with 3-wire or 4-wire tachometer inputs.
• Provides dynamic TMIN control and enhanced acoustic modes for optimized system cooling.

Thermal Management Applications

• Noise-sensitive computer systems requiring active cooling
• Power-sensitive server environments
• Gaming consoles and RFID readers

Thermal Management Procurement Notes

Verify the specific suffix designation against official documentation, as variations may exist within the product line. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer. Ensure the QSOP-16 package dimensions align with your PCB footprint requirements before finalizing procurement decisions.

Thermal Management Selection Notes

Select this component for applications requiring simultaneous monitoring of multiple thermal zones and precise fan speed regulation. The integrated SMBus interface simplifies system integration, while the extended temperature range accommodates harsh operating conditions. Evaluate the need for dynamic TMIN control features to balance acoustic performance against thermal management requirements.

Thermal Management Part Context

This part belongs to the dBCool series of thermal monitors and fan controllers designed for noise-sensitive electronics. It integrates thermal sensing capabilities with motor control functions, eliminating the need for separate components. The design targets modern computing platforms where efficient heat dissipation and low acoustic emissions are critical operational parameters.

Thermal Management Replacement Considerations

Consult official substitution guides for compatible alternatives within the same product family. Verify pinout compatibility and electrical specifications when considering cross-references from other manufacturers. Ensure that any substitute component meets the required I2C/SMBus protocol standards and package dimensions.