MP1720DQ-216-LF-P

Overview

The MP1720DQ-216-LF-P is a Class-D audio amplifier from Monolithic Power Systems. It delivers 2.78 W output power into a 4 Ω load with 5 V supply and 10% THD+N. The device operates on a 2.5 V to 5.5 V supply range. It features a differential input, BTL output topology, and 21.6 dB fixed gain. Key electrical parameters include 0.15% THD+N and a typical noise of 53 μV at 3.3 V. The unit is housed in a 10-pin QFN (3x3 mm) package.

Feature Summary

• High-efficiency D-class architecture providing up to 90% efficiency for portable applications.
• Integrated EMI reduction scheme allows compliance with FCC radiated emissions standards without output filters.
• Pop-and-click suppression circuitry eliminates startup transients during enable/disable cycles.
• Comprehensive protection mechanisms including short-circuit and thermal overload shutdown.

Applications

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

Procurement Notes

Verify the specific suffix 'DQ' confirms the QFN-10 package variant rather than MSOP-10. Confirm the '216' suffix indicates the 21.6 dB fixed gain setting required by the design. Ensure RoHS compliance status matches current manufacturing declarations. Check for any obsolescence notices as this component may be subject to lifecycle changes.

Selection Notes

Select this part when a single-channel high-fidelity amplifier is needed for 4-ohm speakers. The 21.6 dB gain is suitable for line-level inputs. Consider the QFN package for compact board layouts. Verify that the system input voltage remains within the 2.5 V to 5.5 V operational window. Evaluate if the integrated EMI filtering meets regulatory requirements without external components.

Part Context

This component belongs to the MP1720 family of mono Class-D amplifiers. The family offers various gain options and package types. The MP1720 series is designed for low-power audio applications requiring high efficiency and minimal external components. Other variants include different gain settings and MSOP packaging options.

Replacement Considerations

MP1720DH-216-LF-P: Same electrical specifications but utilizes an MSOP-10 package instead of QFN-10. Verify pinout compatibility and thermal performance differences between the two packages before substitution.