ADT7460ARQZ

Overview

The ADT7460ARQZ is a dBCOOL remote thermal controller and fan controller designed for noise-sensitive applications. It features one on-chip and two remote temperature sensors, monitoring up to four fans via PWM outputs. The device supports SMBus 2.0 communication with a default address of 0x2E. Operating voltage ranges from 3.0 V to 5.5 V. Local sensor accuracy is ±1.5°C at 0°C to 70°C and ±3°C across the -40°C to +120°C range. Remote diode accuracy is ±1.5°C at 0°C to 70°C and ±3°C at -40°C to +120°C. Fan speed measurement accuracy is ±7% at 0°C to 70°C.

Feature Summary

• Controls and monitors up to four fan speeds using pulse-width modulation outputs.
• Integrates one on-chip bandgap sensor and supports two external remote diode sensors.
• Features dynamic TMIN control mode to intelligently optimize system acoustics and cooling.
• Includes enhanced acoustic mode to reduce user perception of changing fan speeds.

Applications

• Low acoustic noise PCs
• Networking equipment
• Telecommunications equipment

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm package integrity and pin alignment against QSOP-16 specifications. Check for date codes and lot traceability to ensure compliance with RoHS directives. Validate electrical parameters against the official datasheet before integration into final assemblies.

Selection Notes

Select this component for systems requiring active cooling with strict acoustic constraints. Ensure the design accommodates the required number of remote diodes and fan tachometer inputs. Verify that the host controller supports SMBus 2.0 protocols for configuration and monitoring. Consider the operating temperature range and supply voltage requirements for the specific application environment.

Part Context

The ADT7460 belongs to the dBCOOL family of thermal controllers developed by Analog Devices, now part of onsemi. It is specifically engineered for managing thermal performance in computing and communication hardware where noise reduction is critical. The device replaces discrete thermal management solutions with an integrated digital approach.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.