MP7720DS-LF-Z

Overview

The MP7720DS-LF-Z is a Class-D mono single-ended audio amplifier manufactured by Monolithic Power Systems. It delivers 20W of output power into a 4Ω load when supplied with a 24V source. The device features an integrated 180mΩ power MOSFET and operates on a proprietary variable frequency topology that ensures high linearity and fast response times under single-supply conditions. Key electrical specifications include a THD+N of 0.04%, a supply voltage range from 9.5V to 24V, and a quiescent current of 1.5mA. It functions within a temperature range of -40°C to +85°C and utilizes an SOIC-8 package.

Feature Summary

• Integrates a low-on-resistance power MOSFET to minimize solution size
• Eliminates pop noise during startup and shutdown sequences
• Includes built-in short-circuit protection circuitry
• Supports mute and standby modes for power management

Applications

• Single-speaker audio systems requiring high efficiency
• Portable audio devices powered by single supplies
• Consumer electronics utilizing compact form factors

Procurement Notes

Verify the specific suffix Z indicates lead-free compliance and tape-and-reel packaging configuration. Confirm the SOIC-8 footprint matches your PCB design constraints. Ensure the input signal interface aligns with the differential or single-ended requirements specified in the official datasheet before finalizing procurement orders.

Selection Notes

Select this component for designs prioritizing high power density in a small footprint. The integrated MOSFET reduces external component count compared to discrete solutions. Verify that the thermal performance of the SOIC-8 package meets the heat dissipation requirements for continuous 20W operation at the intended ambient temperature.

Part Context

This part belongs to the MPS MP7720 series of fully integrated D-class audio amplifiers. The family focuses on reducing board space through internal integration of power stages and protection logic. The DS variant specifically denotes the surface-mount SOIC-8 package option, distinguishing it from through-hole PDIP versions like the DP suffix.

Replacement Considerations

MP7747: A similar 20W mono amplifier but uses a QFN-10 package and 250mΩ MOSFET.