MP7720DS-LF-Z - 20W Mono Class-D Amplifier | MPS
MPN： MP7720DS-LF-Z ✓ 啟用中MP7720DS-LF-Z 概覽
A Class-D audio amplifier is a switching power amplifier that uses pulse-width modulation to drive an output stage efficiently. The MP7720 belongs to the Class-D amplifier, audio power-amplifier, integrated audio-amplifier, and power-management semiconductor hierarchy. Its integrated MOSFET output stage allows a compact speaker-driver solution while maintaining high conversion efficiency.
The verified specifications identify a 9.5 V to 24 V supply range, 20 W output at 4 ohms, 60 dB gain-related performance, 1.5 mA quiescent current, and a -40°C to +85°C operating range. The amplifier is specified for mono audio, with Class-D topology and single-ended output. Protection and control features reduce the need for additional external circuitry in suitable speaker applications.
Typical uses include compact speaker systems, portable audio products, audio accessory designs, industrial sound equipment, USB-powered audio projects, and small consumer audio products. The 20 W rating is most relevant when the speaker impedance and supply conditions are verified against the manufacturer datasheet. Efficiency and thermal performance must be considered together because a Class-D amplifier can still dissipate meaningful heat at high output power.
Designers should place the input, supply, and output decoupling capacitors according to the manufacturer reference circuit, keep the high-current output loop compact, and provide adequate copper for thermal dissipation. The output should be checked for correct startup and shutdown sequencing to minimize audible pops. This page consolidates verified distributor data, manufacturer information, cross-reference results, and application guidance for the MP7720DS-LF-Z.
直接替換替代品，適用於 MP7720DS-LF-Z — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MP7720DS-LF-Z （相同外形與佔位） — 差異在於 Channel Configuration, Lead-Free Status, Output Power, Package, Product Type.
MP7720DS-LF
✅ 直接替換聯絡詢價
查看資料表 →MP7740DN-LF
✅ 直接替換📋 參考替代品（不在目錄中）
MP7740DN-LF-Z
✅ 直接替換聯絡詢價
查看資料表 →MP7720DS-Z
✅ 直接替換📋 參考替代品（不在目錄中）
MP7720DS
✅ 直接替換📋 參考替代品（不在目錄中）
MP7720DS-LF-Z 最大額定值與電氣特性
| Product Type | Mono Class-D audio amplifier IC |
| Output Power | 20 W at 4 ohms |
| 供應電壓 | 9.5 V to 24 V |
| 靜態電流 | 1.5 mA |
| Gain | 60 dB |
| 效率 | 93% |
| Power MOSFET Resistance | 180 mOhm |
| 輸出配置 | Single-ended, mono |
| 通道數 | 1 channel |
| 封裝 | 8-SOIC |
| 安裝類型 | Surface mount |
| 工作溫度 | -40°C to +85°C |
| Protection Features | Short-circuit protection, thermal protection, depop/startup-shutdown |
| 控制功能 | Mute, standby, shutdown |
| RoHS 狀態 | RoHS compliant |
| Lead-Free Status | Lead-free |
| Distributor Package Description | Reel, SMD |
| Application Category | Audio amplifiers |
MP7720DS-LF-Z reel, smd 腳位配置指南
MP7720DS-LF-Z（reel, smd 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： MP7720DS-LF-Z.
請參閱 資料表 以查看完整腳位配置。
典型應用
MP7720DS-LF-Z 適用於 8 應用s: Compact Mono Speaker, Portable Audio Product, USB-Powered Audio Accessory, Industrial Audio Module, Consumer Audio Accessory, USB Speaker Amplifier, Powered Monitor Speaker, Audio Test and Measurement Fixture.
Compact Mono Speaker
The MP7720DS-LF-Z fits a compact mono speaker because it combines a 20 W Class-D output stage with integrated 180 mΩ MOSFETs in an 8-SOIC package. The documented 20 W rating applies to a 4-ohm load, so it is appropriate for a small speaker whose impedance and power handling match that condition. The single-ended architecture reduces the external output-stage count, while short-circuit and thermal protection support practical speaker-drive operation. The designer should still verify stability, output filtering, thermal rise, and startup behavior against the manufacturer reference circuit.
推薦
Portable Audio Product
For portable audio equipment, the MP7720DS-LF-Z offers a documented 93% efficiency figure and a 20 W mono capability in a compact surface-mount package. Those characteristics can reduce amplifier-stage size and improve battery utilization compared with a less efficient linear solution, although actual current draw depends on average audio power and conversion losses. The 9.5 V minimum supply means the device is not intended for very low-voltage headphone-style rails. Product engineers should model peak battery current, speaker efficiency, heat dissipation, and audible transients during enable or shutdown.
推薦
USB-Powered Audio Accessory
The MP7720DS-LF-Z can serve a powered mono speaker or USB audio accessory when the available supply remains within the 9.5 V to 24 V range. Its Class-D topology and integrated MOSFETs help keep the external amplifier circuit compact, while the listed protection functions support connected-speaker operation. USB power negotiation, inrush current, cable losses, and the required supply headroom must be evaluated before assuming that a USB port can deliver the full documented output condition. The application also needs verified input filtering and controls for mute, standby, and shutdown.
推薦
Industrial Audio Module
A small industrial audio module can use the MP7720DS-LF-Z when it needs a higher-power mono speaker drive than a conventional low-power audio amplifier provides. The -40°C to +85°C operating range and short-circuit and thermal protection features are relevant to equipment exposed to variable internal temperatures. The 8-SOIC package is surface mount, but the output and supply paths still require careful layout and copper area. Industrial systems should validate EMC, enclosure acoustics, speaker wiring, and protection recovery behavior rather than relying on consumer-audio assumptions.
推薦
Consumer Audio Accessory
The MP7720DS-LF-Z is suitable for a consumer audio accessory that uses one amplified mono speaker, such as a compact soundbar section, monitor speaker, or powered desktop accessory. Its single-ended 20 W Class-D output can simplify the power stage relative to a discrete MOSFET design. The verified 60 dB gain-related figure, 1.5 mA quiescent current, and depop/startup-shutdown functions are useful system-level considerations. Designers should confirm the input source amplitude, speaker impedance, mute polarity, standby behavior, and the exact pinout in the manufacturer datasheet.
推薦
USB Speaker Amplifier
The MP7720DS-LF-Z can be used in a higher-output USB speaker amplifier when the USB power architecture provides adequate voltage and current. Its 20 W specification is tied to a 4-ohm load and should not be interpreted as a guaranteed continuous output into every impedance. The integrated Class-D output stage reduces the number of external power components, but the output filter, supply bypass, and high-current routing remain critical. For a USB-C design, verify source-current limits, inrush behavior, cable resistance, and shutdown transients before selecting this amplifier.
推薦
Powered Monitor Speaker
A powered monitor speaker or compact multimedia speaker may use the MP7720DS-LF-Z for its mono channel. The documented 20 W capability is suitable for a 4-ohm speaker, while mute and standby controls can help manage power and reduce unwanted noise during system transitions. The device's Class-D operation can reduce heat relative to a comparable linear amplifier, but thermal performance still depends on PCB copper, enclosure airflow, and sustained output level. Verify the speaker crossover, analog input level, ground return, and output-filter component selection in the manufacturer reference design.
推薦
Audio Test and Measurement Fixture
The MP7720DS-LF-Z can be used as a compact speaker-drive element in an audio test fixture when a controlled mono Class-D output is needed. The documented 20 W, 4-ohm, 9.5 V to 24 V operating envelope provides a defined starting point for fixture design. Measurement accuracy can be affected by output filtering, speaker impedance, thermal conditions, and the selected input level, so the fixture should include calibrated measurement points. Use the manufacturer reference layout and verify EMI behavior near sensitive analog or digital test circuitry.
推薦
推薦產品摘要
工程參考資料，適用於 MP7720DS-LF-Z — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MP7720DS-LF | MP7740DN-LF | MP7740DN-LF-Z | MP7720DS-Z | MP7720DS |
|---|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems |
主要差異化特點
- Integrated 20 W mono Class-D output stage (對比MP7740DN-LF)
- Documented high efficiency (對比MP7720DS-LF)
- Protection and audio-startup integration (對比MP7720DS-Z)
設計說明
Use the manufacturer reference layout as the starting point for the 8-SOIC amplifier. Keep the Class-D switching current loop compact, place input and supply bypassing close to the relevant pins, and preserve a low-impedance ground return. The exact component values and pin functions are not present in the verified search data, so do not infer them from a generic Class-D circuit. Verify the final PCB against the manufacturer layout and test for output stability at the intended speaker impedance.
Treat thermal design as part of the 20 W output requirement rather than an afterthought. Class-D efficiency is listed as 93%, but actual power dissipation still depends on output level, supply voltage, speaker load, switching losses, and board thermal resistance. Provide adequate copper around the power path and follow the manufacturer’s exposed-pad or package guidance where applicable. Temperature-rise measurements should be made in the final enclosure because ambient airflow and enclosure materials can materially change junction temperature.
Do not confuse the 20 W output rating with a guarantee for every speaker or supply condition. The verified value is associated with a 4-ohm load and the documented supply range is 9.5 V to 24 V. Also do not assume that mute, standby, shutdown, input, supply, ground, and output pins can be swapped with those of another 8-SOIC Class-D amplifier. Obtain the exact MP7720DS-LF-Z pinout and verify control polarity and timing before making a board revision.
合規資訊
RoHS compliance and lead-free status are stated in the verified distributor data. REACH, halogen-free status, conflict-minerals information, and automotive qualification were not provided.
