MP1740EC-LF-P - 3W Mono Class-D Amplifier | MPS
料号： MP1740EC-LF-P ✗ 停产| 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 |
MP1740EC-LF-P 概述
A Class-D audio amplifier is a switching power amplifier that uses a full-bridge H-bridge output to deliver energy to a speaker. Compared with a linear Class-AB amplifier, its Class-D topology can reduce amplifier power loss and improve operating efficiency. The MP1740 combines that efficiency with the audio fidelity associated with Class-AB operation, while its 2 V/V default gain can be changed by selecting different input resistors.
The principal verified features include 3 W output into a 4-ohm speaker, 91% efficiency, mono Class-D operation, a full-bridge output, and a 1.55 mm by 1.55 mm WLCSP package. The manufacturer page identifies the MP1740 as a low-power mono BTL Class-D audio amplifier and identifies EV1740EC-00A as its evaluation board. These characteristics make the device suitable for portable speakers, compact consumer audio, and embedded audio products.
Because the MP1740 uses a BTL output, the speaker connections are not referenced to ground in the same way as a conventional single-ended amplifier. PCB layout, speaker impedance, input filtering, supply decoupling, and thermal performance must be reviewed against the manufacturer documentation. The 1.55 mm by 1.55 mm WLCSP also requires assembly capability and careful land-pattern design.
Typical designs place the amplifier near the speaker connector, connect the differential Class-D outputs to the speaker, and bypass the supply close to the device. The amplifier's 91% efficiency means less power is dissipated internally than with a comparable linear amplifier at the same stated operating point, but speaker loading and supply conditions still determine actual thermal and acoustic performance. The MP1740 is therefore most appropriate when a compact, efficient, mono speaker drive solution is required.
This page combines the verified manufacturer and distributor descriptions with practical design guidance, comparison fields, procurement context, and application-oriented engineering information. It does not infer unverified electrical limits, pin names, pricing values, lifecycle claims, or compliance declarations.
直接替换替代料： MP1740EC-LF-P ——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： MP1740EC-LF-P （相同外形与封装尺寸）.
快速对比工具——选择替代料号进行并排对比：
MP1740EC-LF-Z
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →MP1740EC-LF-P 最大额定值与电气特性
| Amplifier Type | Class-D audio amplifier |
| Channel Configuration | 1-channel mono |
| Output Power | 3 W into 4 ohm speaker |
| 效率 | 91% |
| Output Topology | Full-bridge H-bridge BTL |
| Gain | 2 V/V |
| Input Configuration | Differential audio input |
| 封装 | 9-WLCSP, 1.55 mm x 1.55 mm |
| 安装类型 | Surface mount |
| Nominal Speaker Load | 4 ohm |
| Application Category | Low-power audio amplification |
| Manufacturer Evaluation Board | EV1740EC-00A |
| Manufacturer Product Classification | Low-power mono BTL Class-D audio amplifier |
| Output Mode | Bridge-tied load |
| Nominal Power Rating | 3 W |
| Package Pin Count | 9 pins |
MP1740EC-LF-P 9 pins 引脚配置指南
MP1740EC-LF-P（9 pins 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： MP1740EC-LF-P.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MP1740EC-LF-P 适用于 6 应用s: Portable Bluetooth Speaker, Compact Consumer Audio Product, Battery-Powered Sound Module, USB-Powered Speaker, IoT Audio Notification Device, Embedded Audio Control Board.
Portable Bluetooth Speaker
The MP1740EC-LF-P fits a compact portable speaker because it combines 3 W output into a 4-ohm load with 91% efficiency in a 1.55 mm by 1.55 mm WLCSP package. Its BTL Class-D output can reduce amplifier losses compared with a linear design, helping preserve battery life during moderate listening levels. The system designer should place the amplifier close to the speaker connector, use the manufacturer-recommended supply bypass and output filtering, and verify that the audio source and speaker load match the verified operating point.
推荐
Compact Consumer Audio Product
For a small speaker-enabled consumer product, the MP1740EC-LF-P provides mono Class-D amplification in a compact surface-mount package. The verified 3 W into 4 ohms capability is appropriate for applications that do not require stereo or high-power amplification, while the 91% efficiency helps limit wasted power in a thermally constrained enclosure. The designer should evaluate acoustic output, speaker excursion, supply noise, and thermal rise at the highest sustained volume rather than relying only on the nominal power rating.
推荐
Battery-Powered Sound Module
The MP1740EC-LF-P is a candidate for a battery-powered sound module where amplifier efficiency contributes directly to usable runtime. Its verified 91% efficiency and full-bridge Class-D output reduce power loss relative to a comparable linear amplifier, although average consumption still depends on audio content and output level. The power system should be sized for the amplifier's verified 3 W into 4-ohm condition and should include the required local decoupling, speaker protection strategy, and shutdown behavior specified by the manufacturer.
推荐
USB-Powered Speaker
A USB-powered speaker can use the MP1740EC-LF-P when the power budget supports the verified 3 W output into a 4-ohm speaker. The device's 91% efficiency is useful in USB-powered systems because it limits amplifier conversion loss, while the small WLCSP package leaves board area for USB power management, controls, and connectors. The designer must verify the USB source's current capability, startup behavior, supply ripple, and the required speaker impedance before using the nominal 3 W rating.
推荐
IoT Audio Notification Device
The MP1740EC-LF-P can provide audible notification or alert output in an IoT device when mono Class-D drive is sufficient. Its 3 W capability and 91% efficiency allow a compact speaker amplifier to coexist with control and connectivity circuitry, while the 2 V/V default gain provides a starting point for external input-resistor selection. Firmware-controlled gain, volume limiting, mute behavior, and EMI control should be designed around the manufacturer's application circuit and verified acoustic requirements.
推荐
Embedded Audio Control Board
The MP1740EC-LF-P is suitable for an embedded audio control board that needs a small, efficient mono speaker driver rather than a high-power external amplifier. The WLCSP package helps minimize footprint, while the full-bridge output simplifies differential speaker routing when the PCB is designed correctly. Because the supplied data does not include detailed pinout, supply limits, protection features, or filtering values, the board should be validated against the official MP1740 datasheet and the EV1740EC-00A evaluation board.
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推荐产品汇总
工程参考数据： MP1740EC-LF-P ——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 | MP1740EC-LF-Z |
|---|---|---|
| Package | 9-WLCSP, 1.55 mm x 1.55 mm | 9-WLCSP |
| Brand | Monolithic Power Systems | Monolithic Power Systems |
关键差异点
- High verified efficiency for a compact mono audio amplifier （对比 MP1740EC-LF-Z)
- Compact 1.55 mm by 1.55 mm WLCSP implementation （对比 MP1740EC-LF-Z)
- Manufacturer-defined 3 W into 4-ohm operating point （对比 MP1740EC-LF-Z)
设计说明
Treat the Class-D outputs as a high-current differential pair and route them as a controlled pair from the amplifier to the speaker connection. Keep the BTL return path separate from sensitive input and ground-return paths, and follow the manufacturer evaluation-board layout for WLCSP assembly. The provided data confirms BTL operation but does not provide exact output-filter or trace-width values, so those details must come from the official MP1740 documentation.
Design the supply path around the verified 3 W output into a 4-ohm speaker and 91% efficiency figure, while separately checking the amplifier's actual supply-voltage limits and current consumption from the datasheet. Place local decoupling close to the device and validate startup, mute, and shutdown behavior with the intended speaker and source impedance. Do not estimate battery runtime from peak output power alone; audio duty cycle and average signal level strongly affect the result.
Do not connect a speaker as if MP1740EC-LF-P were a ground-referenced single-ended amplifier. The verified BTL full-bridge output requires a differential speaker connection, and incorrect wiring can damage the amplifier, speaker, or system ground. Also avoid assuming that the -P and -Z suffixes are electrically identical without checking the manufacturer ordering information, pinout, lifecycle status, and exposed-pad requirements.
合规信息
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. AEC-Q100 is not applicable based on the supplied product description, which identifies the part as an audio amplifier rather than an automotive-qualified device.
