MP1720DH-216-LF-P - 2.7W Class D Audio Amplifier | MPS
MPN: MP1720DH-216-LF-P ✓ ActiveMP1720DH-216-LF-P Overview
A Class D amplifier is a switching audio amplifier that drives a speaker with a differential full-bridge waveform. This architecture places the amplifying devices in an efficient power-conversion path, allowing high output power with less heat than a conventional linear Class AB amplifier when operating near its rated load. The MP1720 family also provides startup and shutdown pop suppression, short-circuit protection, and thermal-overload protection.
The verified manufacturer information identifies up to 90% efficiency, internal 250 mΩ power MOSFETs at a 3.3 V supply, five fixed-gain options, and a -40 °C to +85 °C operating-temperature range. These characteristics suit portable speakers, compact consumer audio products, and low-voltage equipment where battery efficiency, EMI control, and thermal performance are important. The exposed-pad MSOP package helps transfer heat into the PCB rather than isolating the amplifier in a thermally constrained enclosure.
At the device level, the MP1720 supports a 20 kHz bandwidth, a single audio channel, and a supply voltage range of 2.5 V to 5.5 V. The -216 suffix identifies a particular fixed-gain implementation within the five-option MP1720 family. Distributor listings classify the device as a 1-channel, mono Class D amplifier and report output power as 2.7 W or 2.78 W depending on the listing convention.
The switchable operating frequency is especially useful in compact audio systems because it provides flexibility between internal EMI optimization and synchronization with a shared system clock. Designers should preserve the manufacturer-recommended input, output, power-ground, and exposed-pad connections. The thermal pad must be tied to the appropriate ground plane and connected with adequate copper and vias so that heat can leave the package efficiently.
The main design trade-off is that Class D switching outputs can introduce high-frequency electromagnetic energy and distortion products that require careful PCB routing. The MP1720 addresses these concerns with selectable carrier frequency, external synchronization, and integrated EMI reduction, but speaker traces, input routing, grounding, and decoupling still need disciplined implementation.
This product page consolidates verified manufacturer and distributor information, package details, procurement sources, and design-oriented application guidance. It also distinguishes the confirmed family candidate from unverified cross-brand replacements so engineers can make PCB-compatibility decisions without treating merely similar audio amplifiers as drop-in parts.
Drop-in alternatives for MP1720DH-216-LF-P — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MP1720DH-216-LF-P (same form factor and footprint) — differing in Output Configuration, Product Type, Package, Efficiency, Operating Temperature Range.
MP1720DH-6-LF-P
✅ Drop-In📋 Reference alternative (not in catalog)
MP1720DH-216-LF-P Maximum Ratings & Electrical Characteristics
| Product Type | Mono Class D audio power amplifier |
| Output Configuration | 1 channel, full-bridge output |
| Rated Output Power | 2.7 W into 4 Ω |
| Distributor-Reported Output Power | 2.78 W |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Maximum Efficiency | 90% |
| Output MOSFET Resistance | 250 mΩ at VIN = 3.3 V |
| Bandwidth | 20 kHz |
| Switching Frequency Options | 1 MHz or 1.3 MHz |
| External Clock Synchronization | Supported |
| Gain Configurations | Five fixed-gain options |
| Output LC Filter Requirement | No output LC filter required by the manufacturer EMI-reduction scheme |
| Startup and Shutdown Pop Suppression | Supported |
| Short-Circuit Protection | Supported |
| Thermal-Overload Protection | Supported |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 10-MSOP-EP |
| Mounting Type | Surface mount |
| Exposed Pad | Present |
MP1720DH-216-LF-P 10-msop-ep Pin Configuration Guide
Pin configuration for MP1720DH-216-LF-P (10-msop-ep package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for MP1720DH-216-LF-P.
Refer to the datasheet for full pin configuration.
Typical Applications
MP1720DH-216-LF-P is suitable for 6 applications: Portable Bluetooth Speaker, USB-Powered Desktop Speaker, Consumer Audio Auxiliary Speaker, Low-Voltage Smart Home Audio Node, Industrial Audible Alarm, Compact IoT Appliance Speaker.
Portable Bluetooth Speaker
The MP1720DH-216-LF-P is suitable for a compact powered speaker because it combines a 2.5 V to 5.5 V supply range with up to 2.7 W output into 4 Ω. Its Class D topology can reach 90% efficiency, reducing the power drawn from a battery or internal USB-derived supply. The 10-MSOP-EP package preserves board area, while the exposed pad provides a direct thermal path into the PCB. Designers should use the selectable 1 MHz or 1.3 MHz carrier setting to optimize EMI in the final enclosure and speaker-cable arrangement.
USB-Powered Desktop Speaker
A USB-powered desktop speaker can use the MP1720DH-216-LF-P to develop useful audio output from a low-voltage 5 V source. The verified 2.7 W capability into 4 Ω is appropriate for small near-field speakers, while the amplifier's full-bridge output reduces the need for a separate line-output stage. Its startup and shutdown pop suppression helps control audible transients during power sequencing. The PCB should include local input and power decoupling, a continuous ground plane, and exposed-pad vias for reliable heat transfer.
Consumer Audio Auxiliary Speaker
The MP1720DH-216-LF-P can serve as the power stage in an auxiliary speaker receiving audio from a phone, media player, or other line-level source. Its 20 kHz bandwidth is appropriate for conventional audio reproduction, while the five-option gain architecture across the MP1720 family provides flexibility for source-level matching. The selected -216 ordering code must be checked against the required channel gain before installation. Input routing should remain away from speaker outputs to minimize pickup of the Class D switching waveform.
Low-Voltage Smart Home Audio Node
The MP1720DH-216-LF-P fits a smart-home audio node where a low-power speaker must be driven from a 3.3 V or 5 V system rail. The device's 90% maximum efficiency supports compact thermal design, and external clock synchronization can help coordinate switching activity with other electronics in the enclosure. The integrated EMI-reduction scheme is valuable around Wi-Fi and control electronics, but system verification should include conducted and radiated emissions testing. Speaker cables require careful routing because they can radiate switching energy.
Industrial Audible Alarm
An audible industrial notification module can use the MP1720DH-216-LF-P to drive a compact 4 Ω sounder from a 5 V industrial supply. The 2.7 W output level is suitable for localized alerts, and the -40 °C to +85 °C operating range supports temperature-controlled equipment. Short-circuit and thermal-overload protection provide useful fault tolerance, although the design must still include appropriate input, output, and supply protection for the external wiring environment. Pop suppression improves operation when the amplifier is enabled or disabled during system start-up.
Compact IoT Appliance Speaker
The MP1720DH-216-LF-P is appropriate for an IoT appliance requiring local voice or notification audio without a large Class AB output stage. Its low-voltage operation, 20 kHz bandwidth, and full-bridge Class D output support efficient integration into a space-constrained board. The exposed MSOP pad must be tied to the ground plane through multiple vias to dissipate output-stage losses. Switching-frequency selection, external synchronization, and short speaker leads should be used together to limit EMI coupling into sensors, radios, and touch interfaces.
Engineering reference data for MP1720DH-216-LF-P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MP1720DH-6-LF-P |
|---|---|---|
| Brand | Monolithic Power Systems | Monolithic Power Systems |
| Package | 10-MSOP-EP | 10-MSOP-EP family package; verify exact mechanical details |
| Amplifier Type | Mono Class D full-bridge | MP1720-family mono Class D amplifier |
| Rated Output Power | 2.7 W into 4 Ω | Not provided in the supplied verified excerpts |
| Supply Voltage Range | 2.5 V to 5.5 V | MP1720-family range; verify ordering table |
| Maximum Efficiency | 90% | Not separately provided in the supplied verified excerpts |
| Bandwidth | 20 kHz | Not separately provided in the supplied verified excerpts |
| Switching Frequency | 1 MHz or 1.3 MHz, with external synchronization | MP1720-family frequency options; verify exact configuration |
| Operating Temperature Range | -40 °C to +85 °C | Not separately provided in the supplied verified excerpts |
| Protection Features | Short-circuit protection, thermal-overload protection, and startup/shutdown pop suppression | MP1720-family protection features; verify exact ordering code |
Key Differentiators
- Low-voltage efficiency for portable audio (vs MP1720DH-6-LF-P)
- Low-EMI switching configuration (vs MP1720DH-6-LF-P)
- Integrated protection for compact speakers (vs MP1720DH-6-LF-P)
Design Notes
Use the exposed pad as the primary heat path. Tie it to the PCB ground plane with several short thermal vias, maintain uninterrupted copper beneath the 10-MSOP-EP package, and avoid placing a tight enclosure wall against the pad. Although the MP1720 includes thermal-overload protection, protection should be treated as a fault backup rather than a substitute for correct copper area, via placement, load limits, and ambient-temperature derating.
Place input-decoupling, supply-decoupling, and speaker-output components directly beside their associated pins. Keep the audio input path short and away from the differential speaker outputs, while providing a continuous ground reference beneath both signal areas. The manufacturer's selectable 1 MHz or 1.3 MHz carrier and external synchronization capability can support EMC optimization, but they do not replace correct high-current grounding and short output routing.
Do not assume that every MP1720 ordering code is an interchangeable drop-in replacement. The family provides five fixed-gain options, so the -216 and -6 suffixes may represent different signal gain choices even though both appear in the same family search. Verify the ordering table, gain value, pin definitions, exposed-pad connection, and recommended application circuit before replacing the target on an existing PCB.
Compliance Information
The supplied excerpts do not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is treated as not applicable because this is an audio amplifier IC rather than an automotive-qualified device.
