MP1720DQ-3-LF-Z - 2.7W Mono Class-D Audio Amplifier
部品番号: MP1720DQ-3-LF-Z ✓ 生産中MP1720DQ-3-LF-Z 概要
A Class-D audio amplifier is a switching-based amplifier that converts a low-level analog input into a high-frequency pulse-width-modulated output. Its full-bridge output stage applies differential voltage to the speaker, increasing usable output voltage and efficiency. In the broader hierarchy, this MP1720 belongs to the amplifier-IC category within integrated circuits and provides a more efficient speaker-drive solution than a conventional linear Class-AB output stage.
The MP1720 delivers up to 2.7 W into a 4-ohm speaker while maintaining an efficiency of approximately 90%. Its integrated power MOSFETs have an on-resistance of 250 milliohms when operated from a 3.3 V supply, reducing conduction loss in compact systems. The low-EMI design is intended to simplify coexistence with sensitive analog, radio, or digital circuitry. Startup and shutdown pop-elimination circuitry further improves the listening experience during power transitions.
The integrated feature set includes short-circuit protection, thermal protection, and depop circuitry. These protections are important in portable and consumer products where a speaker cable fault, restricted enclosure, or sudden power transition can otherwise damage the amplifier or produce unwanted noise. The 3x3 mm QFN package also minimizes board area, although its exposed thermal construction requires careful layout and adequate copper for heat transfer.
Typical uses include portable speakers, Bluetooth speaker accessories, compact consumer audio products, USB-powered audio systems, and small alarm or notification devices. In a 4-ohm speaker design, the MP1720 provides substantially more output power than a conventional low-power analog headphone amplifier. Its 90% efficiency also reduces the power drawn from a battery or USB supply compared with a linear amplifier operating at a similar output level.
PCB design should preserve the manufacturer’s recommended input, supply, and filtering networks, provide a low-impedance ground path, and maintain adequate thermal copper beneath the package. Because Class-D output stages contain high-frequency switching energy, output routing should remain short and isolated from sensitive input or clock signals. Verify the loudspeaker load, supply limits, thermal conditions, and output-filter requirements before production release.
This product record combines the verified manufacturer specifications, distributor listings, lifecycle information, package data, and available replacement information. It also identifies where pricing and detailed pin-level data were not available, preventing unverified assumptions from being presented as guaranteed design values.
ドロップイン代替品: MP1720DQ-3-LF-Z — 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: MP1720DQ-3-LF-Z （同一形状・フットプリント） — 相違点: Efficiency, Mounting Type, Output Configuration, Package, Packaging.
MP1720DQ-216-LF-Z
✅ ドロップイン価格はお問い合わせください
データシートを見る →MP1720DQ-3-LF-Z 最大定格＆電気的特性
| Product Type | Mono Class-D audio power amplifier |
| Maximum Output Power | 2.7 W into 4 ohm |
| 出力構成 | 1-channel full-bridge output |
| 効率 | 90% |
| Integrated Power MOSFET On-Resistance | 250 milliohm at 3.3 V |
| パッケージ | 10-QFN, 3x3 mm |
| 実装タイプ | Surface Mount |
| Packaging | Reel, 5000 pieces |
| Protection Features | Short-circuit protection and thermal protection |
| Startup and Shutdown Control | Pop-elimination circuitry |
| EMI Characteristics | Low-EMI Class-D architecture |
| Recommended Speaker Impedance | 4 ohm |
| ライフサイクル状態 | Active |
| Input Signal Type | Single-ended analog audio input |
MP1720DQ-3-LF-Z 10-qfn, 3x3 mm ピン配置ガイド
MP1720DQ-3-LF-Z (10-qfn, 3x3 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: MP1720DQ-3-LF-Z.
詳細は データシート をご参照ください。
主な用途
MP1720DQ-3-LF-Z の用途: 6 件s: Portable Bluetooth Speaker, USB-Powered Desktop Speaker, Compact Consumer Audio Product, IoT Notification and Alarm Device, Portable Instrument Speaker, Low-Power Embedded Audio Module.
Portable Bluetooth Speaker
The MP1720DQ-3-LF-Z is suitable for a compact Bluetooth speaker because its full-bridge output can deliver 2.7 W into a 4-ohm driver while operating at approximately 90% efficiency. The efficient topology reduces the power burden on a battery or USB supply compared with a linear Class-AB stage of similar output power. Its 10-QFN, 3x3 mm package preserves board area, while integrated short-circuit and thermal protection adds resilience to speaker-cable faults. Designers should keep the switching output path compact, isolate it from radio and audio-input routing, and follow the manufacturer’s recommended filtering network. Speaker sensitivity and the selected supply voltage determine the practical acoustic output, so 2.7 W should be treated as the verified load rating rather than a guarantee of every design’s perceived loudness.
おすすめ
USB-Powered Desktop Speaker
The MP1720DQ-3-LF-Z fits a USB-powered desktop speaker because it combines a 2.7 W output rating for a 4-ohm speaker with approximately 90% efficiency. This allows meaningful audio output from a compact source without the larger heat-dissipation structure typically associated with a linear amplifier. The 3x3 mm QFN package is useful when the enclosure is constrained, and integrated short-circuit and thermal protection supports unattended operation. The amplifier still requires an appropriate input coupling and filtering arrangement, a low-impedance ground path, and adequate copper for heat dissipation. Designers should evaluate the available USB power budget, account for peak rather than average current, and keep Class-D switching nodes away from the codec’s sensitive analog input to preserve audio performance.
おすすめ
Compact Consumer Audio Product
The MP1720DQ-3-LF-Z is appropriate for compact consumer audio products requiring more output than a small signal amplifier can provide. Its mono full-bridge configuration can drive a 4-ohm speaker at 2.7 W, while its approximately 90% efficiency supports compact PCB and thermal layouts. Startup and shutdown pop elimination improves the user experience during power cycling, while short-circuit and thermal protection address common speaker and enclosure faults. In a multi-function product, the amplifier should be placed away from sensitive preamplifier traces and clocks, and the manufacturer’s recommended input and output networks should be retained. Mechanical enclosure design also matters because heat dissipation and acoustic pressure can limit usable output even when the electrical 2.7 W rating is satisfied.
おすすめ
IoT Notification and Alarm Device
The MP1720DQ-3-LF-Z can serve as the audible output stage in an IoT notification, alarm, or smart-home device. A 2.7 W rating into 4 ohms supports a small speaker with adequate level for local alerts, while 90% efficiency is beneficial in battery-operated equipment. The compact 10-QFN package allows the amplifier to coexist with wireless and digital circuitry on a constrained board. Pop-elimination circuitry reduces unwanted startup or shutdown transients, and short-circuit and thermal protection improve robustness in unattended installations. Layout should use a continuous ground reference, keep the modulator output away from sensitive sensor and radio paths, and verify that the selected speaker and enclosure do not create excessive resonant peaks. Battery life must be calculated from average and peak output current under the actual alert waveform.
おすすめ
Portable Instrument Speaker
The MP1720DQ-3-LF-Z is a candidate for a small portable instrument or monitoring speaker where efficiency and board area are important. Its full-bridge Class-D output provides a verified 2.7 W capability into 4 ohms at approximately 90% efficiency, reducing the thermal burden relative to a linear design. Integrated short-circuit and thermal protection is useful for portable equipment where speaker movement, cable faults, or restricted ventilation may occur. The compact QFN package allows closer placement to the speaker connector, but trace geometry still matters because high-current switching paths can couple into low-level inputs. Follow the official datasheet for decoupling, filtering, grounding, and exposed-pad thermal construction, and validate the final enclosure because its acoustic loading can materially change the reproduced low-frequency response.
おすすめ
Low-Power Embedded Audio Module
The MP1720DQ-3-LF-Z suits a low-power embedded audio module that must drive a small 4-ohm speaker without consuming the space and heat allowance of a linear output amplifier. Its approximately 90% efficiency improves the power budget, while the 3x3 mm QFN package supports dense module layouts. The integrated protections address predictable hazards in portable equipment, and pop-elimination circuitry improves behavior during host-controlled startup and shutdown. The amplifier should be powered from a clean, stable rail and placed near the speaker connector to minimize high-current trace length. Sensitive microphone, sensor, and communication paths require separate routing from the Class-D outputs. Before release, test maximum signal level, thermal rise, speaker impedance, and electromagnetic interference with the complete module and enclosure installed.
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: MP1720DQ-3-LF-Z — 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 | MP1720DQ-216-LF-Z |
|---|---|---|
| Brand | Monolithic Power Systems, Inc. | Monolithic Power Systems, Inc. |
| Package | 10-QFN (3x3 mm) | 10-QFN (3x3 mm) |
| Output Power | 2.7 W into 4 ohm | 2.7 W Class-D output |
| Amplifier Type | Mono Class-D full-bridge | Mono Class-D |
主な差別化要因
- Verified 2.7 W output into a 4-ohm speaker （vs MP1720DQ-216-LF-Z)
- Documented 90% efficiency for the -3 version （vs MP1720DQ-216-LF-Z)
- Verified 250-milliohm MOSFET resistance at 3.3 V （vs MP1720DQ-216-LF-Z)
設計ノート
Keep the Class-D output and switching-current paths compact, and place the MP1720DQ-3-LF-Z close to the speaker connector. Maintain a continuous ground reference beneath and around the device, and separate sensitive input, microphone, radio, and clock routes from the output nodes. The low-EMI architecture reduces radiated and conducted emissions, but it does not replace deliberate high-current trace geometry and output-filter implementation.
Provide continuous copper beneath the 10-QFN package and follow the manufacturer’s exposed-pad soldering and thermal-land instructions. Although the verified data confirms thermal protection and a 90% efficiency rating, it does not provide junction-temperature or thermal-resistance figures. Validate maximum enclosure temperature at the highest expected audio duty cycle. Do not assume that the protection circuit is a substitute for adequate copper area and airflow.
Use the manufacturer’s recommended supply-decoupling network and verify available current at peak audio output rather than average signal level. The integrated MOSFETs are specified at 250 milliohm with a 3.3 V supply, but the complete gain, supply-voltage, and output-current limits must be taken from the official datasheet. Add effective filtering at the amplifier input to prevent out-of-band content from increasing switching activity and EMI.
Do not substitute a different MP1720 suffix solely because the advertised wattage is also 2.7 W. Suffixes can encode changes that are not visible in a distributor search result, including enable behavior, gain, protection, or pin configuration. For MP1720DQ-216-LF-Z, obtain the complete manufacturer datasheet and compare every numbered pin, supply limit, gain setting, and typical application before approving it as a drop-in replacement.
コンプライアンス情報
The supplied verified results do not explicitly state the target part's RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claim should be made without current manufacturer documentation.
