MPQ7731DF-LF

Overview

The MPQ7731DF-LF-Z is a mono, Class-D audio amplifier from Monolithic Power Systems. It delivers up to 30W of output power into an 8-ohm load with a supply voltage range of 9.5V to 18V. The device features a typical total harmonic distortion plus noise (THD+N) of 0.1%. It operates within a temperature range of -40°C to +85°C and utilizes a TSSOP-20 surface-mount package.

Feature Summary

• Integrates full bridge output drive with four internal 180mΩ power switches for compact solution design
• Includes dedicated circuits for turn-on/turn-off click and pop suppression during startup and shutdown
• Provides integrated protection mechanisms including short circuit protection and thermal shutdown
• Supports mute and standby modes to minimize power consumption when not in active use

Applications

• Flat panel LCD and PDP displays
• Notebook and multimedia computers
• Televisions and home stereos
• DVD and VCD players
• Game devices and monitors

Procurement Notes

Verify the exact suffix against official MPS documentation, as LF-Z indicates specific packaging and compliance details. Confirm current availability status directly with authorized distributors or the manufacturer, as supply constraints may apply. Ensure the selected variant matches the required automotive or industrial qualification standards if applicable to the final system design.

Selection Notes

Select this component for applications requiring high-efficiency mono audio amplification with minimal external components. The integrated power MOSFETs reduce board space requirements compared to discrete solutions. Verify that the input signal levels and load impedance align with the specified 9.5V to 18V operating range and 8-ohm load capability for optimal performance.

Part Context

This part belongs to the MP7731 series of fully integrated Class-D audio amplifiers. It represents a second-generation design focused on reducing solution size by integrating key functions such as pop elimination and protection circuits. The series is designed to replace traditional Class-A/B amplifiers while maintaining high fidelity and efficiency.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult official MPS documentation for potential cross-references or updated revisions within the same product family.