MP7747DQ-LF-P - 20W Mono Class D Audio Amplifier | MPS
部品番号: MP7747DQ-LF-P ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MP7747DQ-LF-P 概要
A Class D amplifier is a switching audio power amplifier whose output stage operates between active and inactive states instead of dissipating a continuous quiescent current through linear output transistors. This improves conversion efficiency while PWM-based switching creates a modulated output waveform that must pass through a speaker-network filter before driving a conventional speaker. The MP7747 uses MPS variable-frequency topology to provide high fidelity, fast response, and operation from a single power supply.
The MP7747 integrates 250 mΩ power MOSFETs, start-up and shutdown pop elimination, and short-circuit protection. Its switching frequency can reach 1 MHz, reducing the size and propagation delay of the output LC filter. The mono, single-ended architecture suits compact speaker systems that need substantial output from a relatively compact amplifier module.
Key application considerations include output-current capability into 4 ohm and 8 ohm speakers, supply decoupling, exposed-pad thermal management, filter selection, and correct grounding. The integrated protections simplify short-circuit handling, but designers must still verify maximum output power, copper temperature, and speaker impedance under worst-case supply and thermal conditions.
The MP7747 is suitable for portable speakers, multimedia speakers, compact consumer audio, industrial audio modules, and powered speaker subsystems where a mono 20 W Class D amplifier is sufficient. The official Monolithic Power Systems product page identifies the MP7747 as a fully integrated Class D audio amplifier with a single-ended output structure.
ドロップイン代替品: MP7747DQ-LF-P — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MP7747DQ-LF-P （同一形状・フットプリント） — 相違点: Package, Product Type, Short-Circuit Protection.
クイック比較ツール — 並列比較する代替部品を選択:
MP7747DQ-LF-Z
✅ ドロップイン✓ 在庫あり
$0.868 / 個
データシートを見る →MP7747DQ-LF-P 最大定格＆電気的特性
| Product Type | Mono Class D audio amplifier |
| Channel Count | 1 channel |
| Output Power | 20 W at VDD = 24 V into 4 ohm load |
| Supply Voltage Range | 9.5 V to 36 V |
| 出力構成 | Single-ended |
| THD+N | 0.02% at 1 W |
| 効率 | 91% at 20 W, VDD = 24 V, into 8 ohm load |
| 出力ノイズ | 103 µV typical |
| Maximum Switching Frequency | 1 MHz |
| Integrated Power MOSFET Resistance | 250 mΩ |
| Short-Circuit Protection | Integrated |
| Start-Up and Shutdown Pop Elimination | Integrated |
| パッケージ | 10-pin QFN-EP, 3 x 3 mm |
| 動作温度範囲 | -40°C to +125°C |
| 実装タイプ | Surface mount |
| Packaging | Tape and reel; 500 units per reel |
MP7747DQ-LF-P 10-pin qfn-ep, 3 x 3 mm ピン配置ガイド
MP7747DQ-LF-P (10-pin qfn-ep, 3 x 3 mm パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: MP7747DQ-LF-P.
詳細は データシート をご参照ください。
主な用途
MP7747DQ-LF-P の用途: 7 件s: Compact Powered Speaker, Portable Multimedia Speaker, Industrial Audio Module, Soundbar or Monitor Speaker Module, Portable Bluetooth Speaker, USB or DC-Powered Speaker, Compact Guitar or Instrument Monitor.
Compact Powered Speaker
The MP7747DQ-LF-P fits a compact mono powered speaker requiring approximately 20 W at 24 V into a 4 ohm load. Its single-ended Class D architecture can drive the speaker through a suitable output filter while reducing the amplifier size compared with a linear solution. The 91% efficiency at 20 W into an 8 ohm load can reduce heat in the enclosure, although the actual acoustic enclosure temperature still depends on output duration, copper area, ambient temperature, and speaker load.
おすすめ
Portable Multimedia Speaker
For portable consumer audio, the MP7747DQ-LF-P provides a single-ended 20 W Class D output stage from a 9.5 V to 36 V supply range. Its integrated 250 mΩ power MOSFETs reduce external power-stage complexity, while startup and shutdown pop elimination helps reduce audible transients. Battery-powered products must still verify available voltage, peak output current, speaker impedance, and thermal performance because the verified data does not specify battery-endpoint limits or protection thresholds.
おすすめ
Industrial Audio Module
The MP7747DQ-LF-P is suitable for an industrial speaker module where compactness, efficiency, and integrated short-circuit protection matter. A 24 V system can use the documented 20 W condition into 4 ohms, while the 1 MHz maximum switching frequency supports a compact output-filter design. Industrial products should still validate conducted and radiated emissions, enclosure acoustics, grounding over long cable runs, and the amplifier's behavior after repeated fault conditions.
おすすめ
Soundbar or Monitor Speaker Module
A monitor, television, or compact soundbar subwoofer can use the MP7747DQ-LF-P when a mono speaker path is sufficient and the amplifier is placed close to the driver. The single-ended output reduces the external power-stage count, while the 9.5 V to 36 V supply range allows integration with common power rails. The output filter, grounding, and exposed-pad thermal design must be validated at the lowest expected supply voltage and with the actual speaker impedance.
おすすめ
Portable Bluetooth Speaker
The MP7747DQ-LF-P can serve as the power stage in a Bluetooth speaker when the audio source provides an analog signal and the speaker is compatible with a single-ended Class D output. Its 20 W capability is appropriate for a compact full-range or woofer driver, and the high efficiency can help limit battery stress. Designers must add the Bluetooth audio's own power sequencing and protection strategy and must confirm that the amplifier's switching behavior does not create unacceptable EMI or acoustic artifacts.
おすすめ
USB or DC-Powered Speaker
For USB or DC-powered speaker products, the MP7747DQ-LF-P is suitable only when the available supply rail remains within its 9.5 V to 36 V operating range and supports the required current. The documented 20 W output condition uses 24 V and a 4 ohm load, so a 5 V USB source will not provide the same power level. Verify input filtering, supply transients, speaker wiring, and the amplifier's start-up behavior before selecting it for a low-voltage system.
おすすめ
Compact Guitar or Instrument Monitor
The MP7747DQ-LF-P can drive a small speaker in a guitar monitor or instrument monitoring product when the desired output level is within the verified 20 W Class D power capability. The amplifier's 0.02% THD+N at 1 W and 103 µV typical output noise provide useful baseline performance data for a compact sound system. It is not automatically the best choice for very low-latency, high-linearity studio monitoring; analog front-end quality, output filtering, and speaker loading remain important.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MP7747DQ-LF-P — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MP7747DQ-LF-Z |
|---|---|---|
| Brand | Monolithic Power Systems | Monolithic Power Systems |
主な差別化要因
- High documented power efficiency for a compact mono amplifier （vs MP7747DQ-LF-Z)
- Integrated high-side and low-side power-stage elements （vs MP7747DQ-LF-Z)
- Wide supply range for industrial and consumer audio rails （vs MP7747DQ-LF-Z)
設計ノート
Use a supply rail and decoupling network that meet the amplifier's 9.5 V to 36 V operating range and provide transient current for the selected speaker load. The verified 20 W condition is defined at VDD = 24 V into 4 ohms; do not treat that power rating as independent of supply voltage or speaker impedance. Place bulk and local ceramic decoupling near the IC power pins, and verify startup current, supply ripple, and cable-induced transients on the final board.
The exposed thermal pad is part of the power path and thermal solution. Provide a continuous ground-plane connection, multiple thermal vias where PCB rules permit, and sufficient copper area for the intended output level. The retrieved data does not provide theta_JA, maximum junction temperature, or a manufacturer PCB layout, so those values must be obtained from the official datasheet before assigning a thermal rating. Validate the hottest expected output condition rather than only idle or low-power operation.
Keep the Class D switching outputs and exposed-pad current loop compact and away from sensitive input and feedback traces. Route the output filter close to the amplifier and speaker connector, maintain short ground returns, and keep copper areas thermally and electrically consistent. Because the switching frequency can reach 1 MHz, PCB parasitics, filter component tolerances, and via inductance can affect EMI and audio behavior; test radiated emissions and speaker output with the final enclosure and cables.
コンプライアンス情報
The retrieved verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-mineral status. The product is a commercial audio amplifier IC, but compliance must be confirmed from the manufacturer's current product documentation or supply-chain declaration.
