ADT7473ARQH-1R7

Overview

The ADT7473ARQH-1R7 is a dbCOOL controller integrating a thermal monitor and multi-PWM fan controller, designed for noise-sensitive or power-sensitive applications. It operates on a 3 V to 3.6 V supply with a maximum operating current of 3 mA. The device features an output current capability of 8 mA and functions within a temperature range of -40°C to +125°C. Packaged in a QSOP-16 format for surface mount installation, it serves as a dedicated solution for managing cooling systems while maintaining low power consumption.

Feature Summary

• Integrates filtered tachometer input circuitry to enhance noise immunity in high-EMI environments
• Combines thermal monitoring with multi-PWM fan control capabilities
• Optimized for operation in noise-sensitive and power-sensitive application scenarios

Applications

• Noise-sensitive electronic systems requiring precise thermal management
• Power-sensitive equipment utilizing multi-PWM fan control strategies
• High-EMI environments necessitating robust tachometer signal integrity

Procurement Notes

Verify the specific suffix 'Q' against official onsemi documentation to confirm package type and tape/reel specifications. Confirm availability status as distribution channels may list limited stock or end-of-life conditions. Ensure compatibility with existing PCB footprints for QSOP-16 packages before procurement. Cross-reference electrical parameters with the latest datasheet revision to avoid integration errors.

Selection Notes

Select this component when simultaneous thermal monitoring and PWM fan control are required within a single IC. Consider its suitability for environments where electromagnetic interference could compromise standard tachometer readings due to built-in filtering. Evaluate the 3 V to 3.6 V supply voltage range against system power rails. Assess the need for integrated noise immunity features over external filtering solutions.

Part Context

This part belongs to the ADT7473 series of dbCOOL controllers from onsemi. These devices are specialized PMICs focused on thermal management and motor control for cooling fans. The series targets applications demanding efficient heat dissipation without generating excessive acoustic noise or consuming significant power resources.

Replacement Considerations

Check for ADT7473ARQZ-1R7 if package differences exist between QSOP and other variants. Verify functional equivalence with other dbCOOL family members if pinouts differ. Consult onsemi substitution guides for any updated revisions that may replace this specific suffix configuration.