MP7747DQ-LF-Z - 20W Mono Class-D Audio Amplifier | MPS
N.º da peça: MP7747DQ-LF-Z ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $0.868 | $0,87 |
| 10 | $0.868 | $8,68 |
| 100 | $0.868 | $86,80 |
| 500 | $0.868 | $434,00 |
| 1.000 | $0.868 | $868,00 |
| 5.000 | $0.868 | $4.340,00 |
MP7747DQ-LF-Z Visão geral
A Class-D audio amplifier is a switching power amplifier that uses pulse-width-modulated output signals to drive a loudspeaker through a filtering network. Compared with a linear amplifier, the Class-D topology can provide higher efficiency and lower heat dissipation in portable or space-constrained equipment. The MP7747 integrates the power devices and protection functions into one package, reducing external component count and simplifying implementation compared with a discrete switching output stage.
The MP7747 is specifically positioned for mono audio reproduction, including portable speakers, compact consumer audio products, and small embedded audio systems. Its single-ended output architecture is intended to provide a straightforward connection to a speaker load after the required output filtering and decoupling. The verified product information does not provide the complete pin names, electrical limits, gain settings, or recommended PCB land pattern, so those details must be confirmed against the manufacturer datasheet before layout or firmware integration.
The integrated protection functions are important for portable equipment because they help manage startup behavior, shutdown behavior, overload conditions, and thermal stress. Pop elimination can reduce audible transients during startup or shutdown, while short-circuit protection helps protect the amplifier when the speaker connection is abnormal. These functions do not remove the need to observe the datasheet’s operating limits and speaker wiring requirements.
For layout, the MP7747 should be placed according to the manufacturer’s recommended land pattern and with short, low-inductance connections between the amplifier, input network, output filter, supply decoupling, and speaker load. Power and ground paths require particular care because switching audio amplifiers can produce high transient currents. The exact input capacitor, output filter, supply voltage, speaker impedance, and thermal limits are not included in the verified data and require datasheet confirmation.
This page combines the verified distributor and manufacturer descriptions for the MP7747DQ-LF-Z with practical selection guidance. It is intended to help engineers identify whether the part’s 20 W mono Class-D capability and integrated protection functions fit a target speaker system, while clearly separating verified information from parameters that still require confirmation from the manufacturer datasheet.
Alternativas drop-in para MP7747DQ-LF-Z — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MP7747DQ-LF-Z (mesmo formato e footprint) — diferindo em Package, Product Type, Short-Circuit Protection.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasMP7747DQ-LF-Z Classificações máximas e características elétricas
| Product Type | Mono Class-D audio amplifier |
| Channel Count | 1 channel |
| Maximum Output Power | 20 W |
| Speaker Load | 4 Ω |
| Configuração de saída | Single-ended |
| Power MOSFET Resistance | 250 mΩ integrated power MOSFETs |
| Startup/Shutdown Feature | Startup/shutdown pop elimination |
| Short-Circuit Protection | Integrated short-circuit protection circuits |
| Thermal Protection | Thermal protection |
| Encapsulamento | 10-QFN, 3 x 3 mm |
| Tipo de montagem | Surface mount |
| Device Class | Audio amplifier IC |
| Standard Order Quantity | 3003 pieces reported by one distributor listing |
Guia de Configuração de Pinos do MP7747DQ-LF-Z 10-qfn, 3 x 3 mm
Configuração de pinos para MP7747DQ-LF-Z (pacote 10-qfn, 3 x 3 mm). Este componente analógico possui pinos de entrada, saída e alimentação. Consulte o datasheet do fabricante para configurações de offset null, compensação e pino de enable. Ideal para circuitos de condicionamento de sinal e amplificadores.
Nenhum dado detalhado de pinagem disponível para MP7747DQ-LF-Z.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MP7747DQ-LF-Z é adequado para 6 aplicaçãos: Compact Portable Speaker, Consumer Audio Product, Battery-Powered Audio Module, Industrial Control Annunciator, Smart Home Audio Node, USB or Portable Audio Accessory.
Compact Portable Speaker
The MP7747DQ-LF-Z fits a compact mono speaker system because the manufacturer identifies it as a 20 W Class-D amplifier capable of driving a 4 Ω speaker. Its integrated 250 mΩ power MOSFETs reduce the external output-device count, while startup/shutdown pop elimination helps suppress audible transitions. The design still needs the manufacturer-recommended output filter, supply decoupling, and speaker protection. Verify battery voltage range and thermal dissipation before selecting the amplifier for a battery-powered enclosure.
Recomendado
Consumer Audio Product
For a small consumer audio product, the MP7747DQ-LF-Z provides one-channel, single-ended Class-D output in a 10-QFN 3 x 3 mm package. The package helps preserve PCB area in products where the audio channel must coexist with control logic, connectivity, and a battery or USB supply. The integrated short-circuit and thermal protection support robust operation, but the amplifier still requires correct layout and the recommended speaker network. Confirm audio bandwidth and distortion requirements from the manufacturer datasheet.
Recomendado
Battery-Powered Audio Module
The MP7747DQ-LF-Z is a candidate for a battery-powered audio module when the target speaker is approximately 4 Ω and the power budget supports a 20 W Class-D output stage. Its integrated power MOSFETs can simplify the power topology compared with a discrete output implementation, while pop elimination helps control startup and shutdown transients. The critical design checks are supply-voltage compatibility, speaker continuous power, thermal rise, and output-filter component selection. These parameters are not fully specified in the verified snippets and require datasheet confirmation.
Recomendado
Industrial Control Annunciator
A mono Class-D stage such as the MP7747DQ-LF-Z can be evaluated for an industrial control annunciator or compact audible alarm where one speaker is sufficient and the enclosure is thermally constrained. The 20 W capability provides more headroom than many low-power alert drivers, while short-circuit and thermal protection are useful in a persistent audio-output path. The designer must account for industrial supply transients, EMI from the switching stage, speaker impedance, and acoustic limits. The verified data does not confirm an industrial temperature grade, so it should not be assumed.
Recomendado
Smart Home Audio Node
The MP7747DQ-LF-Z can serve as the speaker driver in a smart-home audio node where local voice or alert playback is required. Its 10-QFN 3 x 3 mm package is useful beside a wireless or embedded controller, and the single-ended mono output simplifies integration with a compact speaker. The switching amplifier requires careful grounding and decoupling to prevent unwanted coupling into nearby control or radio circuits. Confirm supply sequencing, EMI behavior, and thermal performance in the final enclosure using the manufacturer application information.
Recomendado
USB or Portable Audio Accessory
The MP7747DQ-LF-Z is suitable for evaluating in a USB-powered or battery-assisted audio accessory that drives one 4 Ω speaker. The integrated MOSFETs and protection circuits can reduce board area and improve robustness compared with a discrete Class-D output stage. However, a 20 W amplifier may exceed the practical power budget of a small USB source, so input supply limits, current transients, and thermal rise must be checked carefully. The verified sources confirm the 20 W and 4 Ω headline specifications but do not provide the required supply range.
Recomendado
Dados de referência de engenharia para MP7747DQ-LF-Z — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Device Type | Mono Class-D audio amplifier |
| Channel Count | 1 channel |
| Output Power | 20 W |
| Speaker Load | 4 Ω |
| Output Configuration | Single-ended |
| Power MOSFET Resistance | 250 mΩ integrated power MOSFETs |
| Protection | Short-circuit protection and thermal protection |
| Package | 10-QFN, 3 x 3 mm |
| Startup/Shutdown | Pop elimination |
| Brand | Monolithic Power Systems |
Principais diferenciais
- Single-channel 20 W Class-D output (vs No verified drop-in alternative available)
- Integrated power MOSFETs (vs No verified drop-in alternative available)
- Protection and pop-control integration (vs No verified drop-in alternative available)
- Compact surface-mount package (vs No verified drop-in alternative available)
Notas de projeto
Treat the MP7747DQ-LF-Z as a switching power stage: place supply decoupling and power-ground connections using the manufacturer’s recommended layout, and keep high-current output paths short and wide. The verified data confirms integrated 250 mΩ power MOSFETs but does not specify the supply-voltage range, so do not select the input rail or estimate current limits without consulting the official datasheet.
Use the official 10-QFN land pattern and verify pin numbering, exposed-pad connection, solder mask, and paste geometry before fabrication. The verified snippets identify a 10-QFN 3 x 3 mm package but do not provide a complete pin map. A pinout copied from a generic QFN drawing can cause input, output, supply, or ground misconnection.
Route the Class-D output and switching-current loop as compactly as practical, keep sensitive audio input traces away from power nodes, and provide a clean return path for the output filter. Place the filter and speaker connections according to the manufacturer reference design. EMI testing is essential because the MP7747’s switching output can couple into adjacent control, radio, or analog circuitry.
Do not connect the speaker directly to an unfiltered Class-D switching output, and do not assume the headline 20 W rating applies to every 4 Ω speaker. Confirm the speaker’s continuous power, impedance, required output-filter values, supply limits, thermal conditions, and startup behavior in the manufacturer datasheet before releasing a production design.
Informações de conformidade
The verified snippets do not provide authoritative compliance statements. One distributor listing requests inventory verification and does not establish RoHS status, so compliance remains unknown.
