Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
Available for RFQ
Technical data
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ME4074BM5G 是南京微盟(MICRONE)推出的一款单节锂电池充电管理芯片,SOT-23-5 封装,面向便携设备的线性充电应用。芯片支持 4V6.5V 工作电压范围,最大充电电流可达 800mA,充电终止电压为 4.20V,静态电流仅 55µA,工作温度范围广(-40℃+125℃),适合空间受限且成本敏感的电源管理方案。
ME4074BM5G 采用常见的恒流/恒压(CC/CV)充电策略:初始阶段以设定的恒流快速充电,当电池电压接近 4.20V 时进入恒压阶段,充至饱和电压并维持,待充电电流下降到一定阈值后可视为充电完成。芯片的低静态电流特性有利于系统待机功耗控制。
SOT-23-5 封装便于表贴与小尺寸设计,但线性充电方式会在芯片上产生 (VIN - VBAT) × ICHG 的功耗。高电压差或大电流(接近 800mA)时需注意 PCB 散热设计与热降额,避免触发热关断影响充电性能。使用多层铜厚板或增加散热铜箔均可改善热性能。
便携消费类电子(蓝牙设备、便携仪器、手持终端)、小型可穿戴设备、低功耗传感终端及需要单节锂电安全充电的嵌入式产品。
如需进一步的管脚定义、典型电路图和 PCB 布局建议,可提供开发资料或具体应用电路以便给出针对性优化方案。
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Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
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.
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