MP7740DN-LF-Z - 15W Mono Class-D Audio Amplifier | MPS
料号： MP7740DN-LF-Z ✗ 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 |
MP7740DN-LF-Z 概述
A Class-D audio amplifier is a switching power amplifier that delivers audio energy through rapidly alternating output voltages. In the broader hierarchy, it is an audio amplifier, analog signal-processing IC, power-management semiconductor, and surface-mount device. Compared with a conventional linear amplifier, the MP7740 architecture is intended to reduce wasted power and heat while retaining the signal path required for compact speaker systems.
The verified manufacturer information identifies 15W output power, 250mΩ integrated power MOSFETs, startup and shutdown pop-elimination circuitry, and short-circuit protection. The 8-SOICE package and integrated power stage can simplify a mono speaker amplifier implementation compared with a discrete MOSFET output stage. A 4Ω speaker load is explicitly supported by the single-ended output structure, while the exact thermal and layout limits must be taken from the manufacturer datasheet.
The MP7740 is positioned for portable or compact audio products where speaker drive current, board area, and startup behavior matter. It can be used in consumer speaker designs, portable audio equipment, soundbars, and auxiliary audio modules, provided the supply voltage, speaker impedance, thermal conditions, and input signal levels match the device specifications. The absence of a verified switching-frequency value, gain setting, and exact pin-level application circuit in the supplied data prevents adding unconfirmed parameters.
Designers should pay particular attention to the exposed thermal pad, copper area, supply decoupling, output filtering, and speaker-load wiring. The integrated protection circuit is useful, but it does not remove the need for correct layout and thermal management. Because the target is a single-ended mono amplifier, system-level headroom and filter selection should be evaluated together with the speaker impedance rather than treated as independent choices.
This page consolidates the verified manufacturer and distributor information for MP7740DN-LF-Z, including the 15W Class-D architecture, supply range, package information, sourcing links, and engineering-focused selection guidance. It does not invent pricing, pin functions, electrical limits, or drop-in replacements that were not confirmed by the supplied records.
直接替换替代料： MP7740DN-LF-Z ——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： MP7740DN-LF-Z （相同外形与封装尺寸） ——差异在于 Product Type.
快速对比工具——选择替代料号进行并排对比：
该产品暂无直接替换替代料。
请求替代料MP7740DN-LF-Z 最大额定值与电气特性
| Product Type | Mono Class-D audio amplifier |
| Channel Configuration | 1-channel mono |
| Rated Output Power | 15 W into 4 ohm |
| Supply Voltage Range | 9.5 V to 36 V |
| Integrated Power MOSFET Resistance | 250 mOhm |
| Output Architecture | Single-ended output |
| Short-Circuit Protection | Integrated |
| Startup/Shutdown Pop Elimination | Integrated |
| 工作温度范围 | -40 C to +85 C |
| Package Type | SOIC-8 with exposed pad |
| Package Designation | 8-SOICE |
| 安装类型 | Surface mount |
| Power-MOSFET Integration | Integrated power MOSFETs |
MP7740DN-LF-Z 8-soice 引脚配置指南
MP7740DN-LF-Z（8-soice 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： MP7740DN-LF-Z.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MP7740DN-LF-Z 适用于 6 应用s: Compact 4Ω Speaker Amplifier, Portable Audio Product, Soundbar Speaker Module, Consumer Electronics Speaker Driver, USB-Powered Audio Accessory, Industrial Audio Annunciator.
Compact 4Ω Speaker Amplifier
The MP7740DN-LF-Z fits a compact mono speaker module requiring up to 15W into a 4Ω load from a 9.5V-to-36V supply. Its integrated 250mΩ power MOSFETs remove the need for a separate discrete output stage in the basic architecture, while the single-ended output keeps the signal path direct. The integrated short-circuit protection is useful in portable equipment where speaker wiring faults are possible. Designers should preserve the exposed-pad thermal path, use short supply connections, and verify the actual output level and temperature rise in the final enclosure. The available records confirm the 15W and 4Ω capability but do not provide a closed-loop gain value, switching frequency, or detailed filter values.
推荐
Portable Audio Product
For battery-derived portable audio, MP7740DN-LF-Z offers a 15W mono Class-D output architecture that can be paired with a suitable regulator and speaker. The 9.5V-to-36V operating range provides design flexibility for systems using multiple cells or a boosted internal rail. The integrated MOSFETs and protection circuits help reduce external component count, which is valuable when board area is limited. The key engineering trade-off is thermal management: a Class-D stage reduces switching loss relative to a linear output stage, but output-current capability still depends on copper area, ambient temperature, speaker impedance, and continuous musical duty cycle. The exact battery regulator and protection-network recommendations require application-specific validation.
推荐
Soundbar Speaker Module
MP7740DN-LF-Z can serve as the mono low-volume amplifier channel in a compact soundbar or auxiliary speaker enclosure. Its single-ended output and integrated power MOSFETs simplify the local amplifier section, while startup and shutdown pop-elimination circuitry helps reduce audible transients during channel changes. The 15W rating gives system designers a clear target for a 4Ω driver, although the final acoustic output can be limited by supply droop, thermal conditions, and speaker sensitivity. Use the manufacturer datasheet for pin mapping and application filtering, and test the amplifier with the intended speaker cable because long or poorly terminated speaker wiring can increase transient stress.
推荐
Consumer Electronics Speaker Driver
The MP7740DN-LF-Z is appropriate for consumer products where one mono speaker channel is sufficient and a 4Ω load is expected. Its integrated 15W Class-D stage can reduce the number of external power components compared with a discrete MOSFET amplifier, and the SOIC-8 package supports conventional surface-mount assembly. The design should include stable supply decoupling, a deliberate ground return, and an exposed-pad copper pattern that follows the manufacturer recommendation. Since the supplied data does not state the exact gain, modulation method, EMI performance, or thermal resistance, engineers should not infer those values from the generic Class-D category and should validate them against the official datasheet.
推荐
USB-Powered Audio Accessory
A USB-powered or externally regulated audio accessory can use MP7740DN-LF-Z when the selected supply can maintain the required 9.5V minimum operating voltage and support the intended speaker output level. The integrated Class-D output stage is useful when a small enclosure leaves little room for discrete circuitry, and its 4Ω 15W target is well suited to a compact driver. USB power availability, inrush behavior, ground isolation, and thermal rise must be checked before advertising full power. The supplied records do not verify a USB-specific reference design or regulator value, so the final design should use system-level measurements rather than assuming universal compatibility.
推荐
Industrial Audio Annunciator
MP7740DN-LF-Z can be evaluated for compact industrial audio annunciators or equipment speaker modules that need a mono 4Ω driver and a protected amplifier stage. The integrated short-circuit protection can improve robustness in equipment where the speaker or cable may be exposed to accidental faults. The wide 9.5V-to-36V supply range can simplify adaptation to industrial DC buses, subject to the device's exact operating limits. Industrial use also requires attention to conducted and radiated emissions, enclosure acoustics, cable routing, and the operating-temperature range of -40°C to +85°C. EMC qualification and long-term reliability testing should be performed on the complete product rather than inferred from the amplifier alone.
推荐
推荐产品汇总
工程参考数据： MP7740DN-LF-Z ——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 | MP7720DS-LF |
|---|---|---|
| Package | 8-SOICE | SOIC-8 with exposed pad listed in comparison search |
| Brand | Monolithic Power Systems | Monolithic Power Systems |
| Product Type | Mono Class-D audio amplifier | Mono Class-D audio amplifier |
关键差异点
- Integrated 15W mono Class-D output stage （对比 MP7720DS-LF)
- Wide supply range for compact power systems （对比 MP7720DS-LF)
- Integrated protection and startup behavior （对比 MP7720DS-LF)
设计说明
Treat the exposed pad as the primary thermal path. Estimated design work should begin with the actual dissipation generated by the Class-D output stage at the selected supply, load impedance, output level, and duty cycle, then verify the resulting junction temperature using the manufacturer thermal model. Keep the thermal copper continuous, avoid narrow neckdowns, and use vias or thermal structures recommended by the manufacturer datasheet.
Provide local supply decoupling close to the amplifier pins and route high-current output and ground paths with low resistance. The verified 9.5V-to-36V supply range does not guarantee regulation or safe thermal operation across every combination of input voltage and speaker load. Check startup current, supply droop, wiring loss, and the regulator's current margin before enabling a 15W nominal output target.
Use the official MP7740 datasheet layout as the authority for exposed-pad connection, input routing, output routing, and component placement. Keep sensitive input and ground paths away from the switching output node, minimize loop area in the power stage, and account for the speaker filter or EMI network specified by the manufacturer. The supplied data does not include exact pin functions or via counts, so those details must not be inferred.
Do not assume that integrated short-circuit protection removes the need for a safe speaker load or correct wiring. Confirm the speaker impedance, cable length, amplifier shutdown behavior, and thermal conditions in the finished enclosure. Also avoid substituting a related MPS amplifier without checking the datasheet pinout; the available cross-reference search identifies MP7720DS-LF as related but does not prove pin-to-pin replacement of MP7740DN-LF-Z.
合规信息
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Do not infer these statuses from the manufacturer name or package.
