ADT7467ARQZ-REEL7

Overview

The ADT7467ARQZ-REEL7 is a dbCOOL remote thermal monitor and fan controller manufactured by onsemi. It operates within a supply voltage range of 3.0 V to 5.5 V and supports SMBus communication at frequencies up to 400 kHz. The device features one local temperature sensor with an accuracy of ±2°C across the -40°C to +120°C range, and two remote diode sensors with similar accuracy. It provides three PWM outputs for controlling up to four fans and includes four tachometer inputs for speed measurement. The component is housed in a QSOP-16 package.

Feature Summary

• Controls and monitors up to four fans using high or low frequency drive signals
• Monitors one internal and two remote temperature sensors with series resistance cancellation
• Features dynamic TMIN control mode to intelligently optimize system acoustics
• Provides thermal protection via bidirectional THERM pin output

Applications

• Noise-sensitive computer systems requiring active cooling
• Power-sensitive applications needing optimized fan speeds
• Monitoring Intel Pentium 4 processor performance impact
• Server chassis thermal management

Procurement Notes

Verify the specific REEL7 suffix against the manufacturer's current ordering guide to confirm packaging specifications. Confirm that the QSOP-16 package dimensions match your PCB footprint requirements. Ensure compatibility with the SMBus interface levels used in your target system design before finalizing procurement.

Selection Notes

Select this component when multiple fan control channels are required alongside precise thermal monitoring. The inclusion of series resistance cancellation makes it suitable for applications where long traces connect to remote sensors. Consider the extended temperature measurement range if operating conditions exceed standard limits.

Part Context

This part belongs to the ADT7467 family of thermal controllers. It serves as an upgrade to the ADT7460, offering additional features such as programmable maximum fan speed and extended temperature ranges. The device integrates analog-to-digital conversion and serial bus interfaces into a single chip for comprehensive system thermal management.

Replacement Considerations

The ADT7460 is a compatible predecessor with pin and register map compatibility. Note differences in default fan states and available SMBus addresses when substituting.