MP7720DS-LF-Z - 20W Mono Class-D Amplifier | MPS
料号： MP7720DS-LF-Z ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MP7720DS-LF-Z 概述
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.
直接替换替代料： MP7720DS-LF-Z ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MP7720DS-LF-Z （相同外形与封装尺寸） ——差异在于 Channel Configuration, Lead-Free Status, Output Power, Package, Product Type.
快速对比工具——选择替代料号进行并排对比：
MP7720DS-LF
✅ 直接替换✓ 有现货
$0.99 / 个
查看数据手册 →MP7740DN-LF
✅ 直接替换📋 参考替代料（不在目录中）
MP7740DN-LF-Z
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →MP7720DS-Z
✅ 直接替换📋 参考替代料（不在目录中）
MP7720DS
✅ 直接替换📋 参考替代料（不在目录中）
MP7720DS-LF-Z 最大额定值与电气特性
| Product Type | Mono Class-D audio amplifier IC |
| Output Power | 20 W at 4 ohms |
| 电源电压 | 9.5 V to 24 V |
| 静态电流 | 1.5 mA |
| Gain | 60 dB |
| 效率 | 93% |
| Power MOSFET Resistance | 180 mOhm |
| 输出配置 | Single-ended, mono |
| 通道数 | 1 channel |
| 封装 | 8-SOIC |
| 安装类型 | Surface mount |
| 工作温度 | -40°C to +85°C |
| Protection Features | Short-circuit protection, thermal protection, depop/startup-shutdown |
| 控制特性 | Mute, standby, shutdown |
| RoHS 状态 | RoHS compliant |
| Lead-Free Status | Lead-free |
| Distributor Package Description | Reel, SMD |
| Application Category | Audio amplifiers |
MP7720DS-LF-Z reel, smd 引脚配置指南
MP7720DS-LF-Z（reel, smd 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： MP7720DS-LF-Z.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MP7720DS-LF-Z 适用于 8 应用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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： MP7720DS-LF-Z ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Integrated 20 W mono Class-D output stage （对比 MP7740DN-LF)
- Documented high efficiency （对比 MP7720DS-LF)
- Protection and audio-startup integration （对比 MP7720DS-Z)
设计说明
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.
合规信息
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.
