MP7747DQ-LF-Z - 20W Mono Class-D Audio Amplifier | MPS
부품 번호: MP7747DQ-LF-Z ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 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 개요
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.
드롭인 대체품: MP7747DQ-LF-Z — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MP7747DQ-LF-Z (동일 폼 팩터 및 풋프린트) — 차이점: Package, Product Type, Short-Circuit Protection.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청MP7747DQ-LF-Z 최대 정격 & 전기적 특성
| Product Type | Mono Class-D audio amplifier |
| Channel Count | 1 channel |
| Maximum Output Power | 20 W |
| Speaker Load | 4 Ω |
| 출력 구성 | 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 |
| 패키지 | 10-QFN, 3 x 3 mm |
| 실장 유형 | Surface mount |
| Device Class | Audio amplifier IC |
| Standard Order Quantity | 3003 pieces reported by one distributor listing |
MP7747DQ-LF-Z 10-qfn, 3 x 3 mm 핀 구성 가이드
MP7747DQ-LF-Z(10-qfn, 3 x 3 mm 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: MP7747DQ-LF-Z.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
MP7747DQ-LF-Z 적합 용도: 6 애플리케이션s: 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.
추천
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.
추천
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.
추천
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.
추천
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.
추천
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.
추천
엔지니어링 참조 데이터: MP7747DQ-LF-Z — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 |
|---|---|
| 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 |
주요 차별점
- 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)
설계 노트
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.
규정 준수 정보
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.
