MP1720DQ-3-LF-P

Overview

The MP1720DQ-3-LF-P is a mono Class-D audio amplifier manufactured by Monolithic Power Systems. It delivers 2.7W of output power into a 4Ω load at 5V input with 10% THD+N. The device features a full-bridge output structure and integrates low-on-resistance power MOSFETs to achieve high efficiency up to 90%. It includes pop-and-click suppression, short-circuit protection, and thermal shutdown. The unit operates within a temperature range of -40°C to +85°C.

Feature Summary

• High-efficiency Class-D architecture providing 90% efficiency for portable applications
• Integrated EMI reduction scheme allowing operation without output filters while meeting FCC radiated emissions standards
• Built-in pop-and-click suppression circuitry for silent startup and shutdown transitions

Applications

• Mobile phones
• Tablets
• MP3 players
• Portable audio devices

Procurement Notes

Verify the specific suffix '3' indicates the fixed 3dB gain configuration as documented in official MPS literature. Confirm the QFN-10 package type matches the design requirements. Ensure compliance with RoHS directives and check for current availability status, as distribution channels may vary.

Selection Notes

Select this component when a single-channel audio solution is required with minimal external filtering. The fixed 3dB gain setting suits applications where signal amplification needs are modest. Consider the QFN-10 footprint for space-constrained PCB layouts requiring efficient heat dissipation through the exposed pad.

Part Context

This part belongs to the MP1720 series of mono Class-D audio amplifiers. The series offers various gain options and switching frequencies to optimize performance for different audio quality and EMI requirements. The DQ suffix denotes the QFN-10 package variant, distinguishing it from MSOP or other package types within the same functional family.

Replacement Considerations

Consult official MPS documentation for direct pin-compatible substitutes within the MP1720 series. Verify that alternative parts maintain the 2.7W output capability and 3dB gain specification if those parameters are critical to the design.