MP7748SGF-Z - 60W Class D Audio Amplifier | MPS
料号： MP7748SGF-Z ✓ 量产中| 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 |
MP7748SGF-Z 概述
A Class D audio amplifier is a switching power amplifier that uses pulse-width modulation to drive speakers with high efficiency while filtering the switching waveform into an audio output. It belongs to the audio amplifier hierarchy, where its efficiency and output power can exceed those of conventional linear Class A/B amplification. The MP7748S uses proprietary variable-frequency topology and is designed for compact consumer-audio and multimedia systems.
The amplifier supports two 30 W channels into 4 Ω speakers when configured as single-ended stereo, or one 60 W channel into an 8 Ω speaker when its outputs are combined in bridge-tied-load mode. This flexibility allows one device family to address stereo speakers, a mono subwoofer, a compact monitor, or a consumer-audio terminal. Integrated power MOSFETs reduce external component count and simplify the output stage.
The supplied manufacturer search result states that the MP7748S provides high fidelity comparable to Class A/B amplification at high Class D efficiency. Variable-frequency operation can also reduce low-frequency interference concerns associated with a fixed switching frequency, although frequency-dependent EMI evaluation remains essential. Input filtering, output reconstruction, speaker load, thermal conditions, and supply decoupling determine final acoustic and system performance.
Typical uses include compact stereo systems, portable or multimedia speakers, home-theater amplification, powered subwoofers, smart displays, and compact consumer-audio products. In single-ended operation, each channel drives a speaker independently; in bridge-tied-load operation, the two outputs work together so the speaker sees the differential voltage without tying either output to ground.
Layout is critical because the exposed pad and output traces carry power while the audio input is sensitive to switching and ground noise. Place input filtering and decoupling near their associated pins, keep loudspeaker outputs away from the analog input, and use the manufacturer’s datasheet land pattern and output-filter recommendations. Verify thermal performance, speaker impedance, and protection behavior in the final enclosure.
This page combines verified manufacturer and distributor data with application guidance, source traceability, and drop-in-replacement analysis. It explicitly distinguishes confirmed MP7748SGF information from target-ordering and package details that were not supplied, avoiding unsupported electrical or commercial assumptions.
直接替换替代料： MP7748SGF-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： MP7748SGF-Z （相同外形与封装尺寸） ——差异在于 Input Type, Package, Stereo Output Power.
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MP7748SGF
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查看数据手册 →MP7748SGF-Z 最大额定值与电气特性
| Product Type | Class D audio amplifier |
| Channel Configuration | 1-channel mono or 2-channel stereo |
| Stereo Output Power | 2 x 30 W |
| Stereo Load | 4 Ω per channel |
| Stereo Output Configuration | Single-ended |
| Mono Output Power | 60 W |
| Mono Load | 8 Ω |
| Mono Output Configuration | Bridge-tied-load (BTL) |
| Integrated Power MOSFET Resistance | 200 mΩ |
| Protection Features | Startup/shutdown pop elimination and short-circuit protection |
| Switching Topology | Proprietary variable-frequency Class D topology |
| Input Type | Analog single-ended input |
| 封装 | 28-TSSOP-EP |
| 安装类型 | Surface mount |
| Lead-Free Status | RoHS compliant |
| REACH Status | Not available |
| Automotive Qualification | Not indicated |
MP7748SGF-Z 28-tssop-ep 引脚配置指南
MP7748SGF-Z（28-tssop-ep 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： MP7748SGF-Z.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MP7748SGF-Z 适用于 7 应用s: Compact Stereo Speaker, Powered Mono Subwoofer, Home-Theater Speaker, Multimedia Speaker System, Portable Audio Product, Powered Monitor Speaker, Consumer Audio Terminal.
Compact Stereo Speaker
MP7748SGF-Z fits a compact stereo speaker because the verified family data supports 2 x 30 W into 4 Ω in single-ended operation. Place the amplifier between the analog source and the two speaker channels, then use the manufacturer’s recommended input and output filtering. The integrated 200 mΩ power MOSFETs and pop-elimination functions reduce external output-stage complexity, while the 28-TSSOP-EP package supports compact consumer-audio boards. Validate the supply voltage, thermal rise, speaker impedance, and acoustic output in the final enclosure.
推荐
Powered Mono Subwoofer
For a powered subwoofer, configure MP7748SGF-Z in bridge-tied-load mono mode, where the verified family data specifies up to 60 W into 8 Ω. The differential output avoids a grounded speaker connection, but it also requires correct polarity, filter design, and protection. Use a stable supply and output network designed for the selected speaker impedance, and test for clipping, oscillation, and thermal limits at maximum music level. The exposed-pad package requires close attention to PCB copper and heat flow.
推荐
Home-Theater Speaker
MP7748SGF-Z can serve as the power amplifier in a compact home-theater speaker when the design accepts analog inputs and requires 30 W per channel into 4 Ω. Its stereo single-ended configuration is convenient for left and right channels, while the verified variable-frequency Class D architecture can provide high conversion efficiency. The designer should account for source volume-control behavior, channel imbalance, bass extension, and speaker protection. Verify EMI behavior because the amplifier’s switching energy can affect adjacent video, control, or network circuitry.
推荐
Multimedia Speaker System
The MP7748SGF-Z is suitable for multimedia and smart-speaker systems where a small board must drive two speakers efficiently. The verified 28-TSSOP-EP package, integrated power devices, and startup or shutdown pop mitigation reduce mechanical and circuit complexity. Use analog filtering appropriate to the source bandwidth, maintain short return paths, and place the amplifier supply bypass network close to the IC. System designers should add firmware or hardware volume limiting to prevent sustained clipping and speaker overload.
推荐
Portable Audio Product
MP7748SGF-Z can support portable or compact audio products when the mechanical design provides adequate supply headroom and speaker loading. Its Class D conversion approach is useful in battery-constrained products because switching amplifiers can achieve higher efficiency than linear output stages, although the verified data does not supply a specific efficiency percentage. Battery protection, instantaneous peak current, thermal rise, and audible pop behavior must be evaluated together. Use the manufacturer’s recommended startup and shutdown sequencing.
推荐
Powered Monitor Speaker
MP7748SGF-Z is a reasonable candidate for a powered monitor speaker requiring analog stereo amplification and local speaker drive. The verified 2 x 30 W into 4 Ω capability provides a useful starting point for near-field or compact monitor designs, while the mono BTL option can support a subwoofer channel. The system designer should match the amplifier’s frequency response and distortion behavior to the selected speaker crossover, control gain structure carefully, and reserve PCB area for the exposed thermal pad. Validate real-world thermal and acoustic performance rather than relying on nominal output power alone.
推荐
Consumer Audio Terminal
MP7748SGF-Z fits consumer-audio terminals that need integrated Class D drive without a discrete output MOSFET stage. The verified product family combines stereo and mono flexibility, short-circuit protection, and pop-elimination features in one surface-mount IC. Input coupling, grounding, loudspeaker wiring, and output filtering must be designed together because the amplifier is a switching power stage. Compliance and EMI behavior should be checked for the finished product rather than inferred from the component name alone.
推荐
推荐产品汇总
工程参考数据： MP7748SGF-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 | MP7748SGF | MP7748SGF-Z |
|---|---|---|---|
| Product Type | Class D audio amplifier | Class D audio amplifier | Class D audio amplifier |
| Brand | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems |
| Package | 28-TSSOP-EP | 28-TSSOP-EP per verified listing | 28-TSSOP-EP |
| Stereo Output Power | 2 x 30 W | 2 x 30 W | 2 x 30 W |
| Stereo Load | 4 Ω | 4 Ω | 4 Ω |
| Mono BTL Output Power | 60 W into 8 Ω | 60 W into 8 Ω | 60 W into 8 Ω |
| Output Configuration | Single-ended stereo or BTL mono | Single-ended stereo or BTL mono | Single-ended stereo or BTL mono |
| Integrated Power MOSFET Resistance | 200 mΩ | 200 mΩ | 200 mΩ |
| Protection | Startup/shutdown pop elimination and short-circuit protection | Startup/shutdown pop elimination and short-circuit protection | Startup/shutdown pop elimination and short-circuit protection |
| Switching Topology | Proprietary variable-frequency topology | Proprietary variable-frequency topology | Proprietary variable-frequency topology |
| Input | Analog single-ended input | Analog single-ended input | Analog single-ended input |
关键差异点
- Stereo and mono output flexibility （对比 MP7748SGF)
- Integrated power stage （对比 MP7748SGF)
- Protection and startup behavior （对比 MP7748SGF)
设计说明
Treat the MP7748SGF-Z as a high-current switching power stage rather than only an audio IC. Route supply, ground, output, and exposed-pad connections with short, wide paths; place input filtering and bypass capacitors near their pins; and maintain separation between loudspeaker outputs and the analog input. The verified data specifies a 28-TSSOP-EP package, so the thermal pad and its via/stencil pattern must follow the manufacturer land pattern.
Design the supply path for the load rather than only for nominal input current. The verified ratings are 30 W per channel into 4 Ω in stereo or 60 W into 8 Ω in BTL mono, so the supply, decoupling network, and protection scheme must tolerate the expected transient demand and startup behavior. Confirm the actual supply voltage and limits in the manufacturer datasheet; those values were not supplied in the verified snippets.
Do not connect a bridge-tied-load output incorrectly or substitute a single-ended speaker connection without rechecking the amplifier configuration. BTL outputs drive the load differentially, whereas single-ended stereo outputs require independent channel wiring. Use the manufacturer output-filter and application-circuit values, and verify speaker impedance, polarity, startup pop behavior, and short-circuit protection in the final board.
合规信息
The supplied PartGenie result states RoHS Y and does not provide a REACH result. Other compliance fields were not confirmed in the supplied verified data.
