Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
HGSEMI LM4890MM/TR LM4890MM
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HGSEMI LM4890MM / TR
- Type
- HGSEMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HGSEMI
- Electronic Component
- LM4890MM/TR
- Electronic Component
- 1
- Package
- MSOP-8
- Electronic Component
- Audio Power Amplifier
- Electronic Component
- 0.179g
- Electronic Component
- 1
- Features
- ESD; Analog Voltage; /; / Switch
- Electronic Component
- BM0264548645
- Operating Voltage
- 2.5V~5.5V
- Output Power
- 1.2W×1@8Ω；0.35W×1@8Ω
- Static Current(Iq)
- 1.06mA
- Speaker Channel Count
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM4890MM/TR 产品概述
一、产品简介
LM4890MM/TR 是一款面向便携式音频应用的线性稳压器(LDO)型 1W 单声道音频功率放大器，封装为 MSOP-8，由 HGSEMI(华冠) 提供。器件工作电压范围宽 (2.5V～5.5V)，集成多项实用功能，适合电池供电或低电压系统驱动小型扬声器，能够在有限功耗条件下实现良好的音频再现效果。
二、主要性能参数
- 扬声器通道数：单声道
- 输出功率：1.2W × 1 @ 8Ω；0.35W × 1 @ 8Ω（器件在不同工作条件下的典型输出能力）
- 总谐波失真+噪声 (THD+N)：0.123%（典型值，表征音质保真度）
- 静态电流 (Iq)：1.06mA（静态待机功耗低，利于电池供电）
- 电源纹波抑制比 (PSRR)：-63dB（对电源纹波抑制能力强，有利于降低电源噪声影响）
- 工作电压：2.5V ～ 5.5V
- 封装：MSOP-8
三、功能特性
- ESD 保护：输入/输出端具备静电放电防护，提高系统可靠性与生产良率。
- 模拟电压增益：内部设定的增益结构，适配常见前端信号电平，便于与音量控制或音源直接对接。
- 使能/关断功能：支持使能管脚控制，可实现快速上电/关断，降低系统待机功耗。
- 自动静音/免噪音开关：电路设计上具备消除开关噪声的处理，能够在使能切换时避免明显的“啪嗒”声或突变噪音。
四、典型应用场景
- 便携蓝牙音箱、随身扬声器
- 玩具音响、电子提示器、智能家居语音提示模块
- 电池供电的手持设备音频放大
- 需要低功耗待机与较好音质的嵌入式音频输出场合
五、设计与使用建议
- 电源与去耦：尽量在电源引脚附近布置足够的旁路电容（例如陶瓷电容），以确保稳定供电并发挥 PSRR 优势。
- 布线与接地：建议采用连续的接地平面，输入/输出走线尽量短，避免长串联走线将高频噪声耦合回放大器。
- 热管理：MSOP-8 封装体积较小，长时间大功率输出时需考虑 PCB 铜箔散热与合理布局，避免器件过热影响性能或寿命。
- 开关过程控制：利用使能/静音功能可以实现无噪音开关，建议在系统初始化中设置合理的启动延时与升压斜率以降低点击声。
六、封装与可靠性
- 封装形式：MSOP-8，适合高密度板载应用，便于自动贴装和批量生产。
- 可靠性关注点：建议在产品验证阶段进行长时间老化与 ESD 抗扰测试，结合实际使用温度与负载条件确认热限及长期性能稳定性。
七、总结
LM4890MM/TR 将低静态功耗、较高的输出功率与良好的电源抑制能力结合在紧凑的 MSOP-8 封装中，适合对功耗、体积和音质都有要求的便携音频应用。其内置的 ESD 保护、使能/静音控制及较低的 THD+N，使得在实际产品设计中能够减少外围元件、简化系统设计并提升用户体验。设计时注意电源去耦、散热与 PCB 布局，可更好地发挥器件性能。
Request for quote
Send RFQ
Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
Model, package, availability, and BOM fit reviewed before quotation.
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
BOM matching & alternatives
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Sourcing availability signal
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
Examples of how common component sourcing requests are organized.
Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.
The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
Related products
Packaged components ready for RFQ.
