WMSIC Electronic Components

MICRONE ME4074BM5G

ModelME4074BM5G
PackageSOT-23-5
BrandMICRONE
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MICRONE ME4074BM5G
Type
MICRONE
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MICRONE
Electronic Component
ME4074BM5G
Electronic Component
1
Package
SOT-23-5
Electronic Component
Battery Management
Electronic Component
0.042g
Electronic Component
1
Features
Programmable Current
Electronic Component
BM0229945979
Operating Temperature
40℃~+125℃
Operating Voltage
4V~6.5V
Battery Type
Battery
Battery
1
ICType
IC
Static Current(Iq)
55uA

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

ME4074BM5G 产品概述

一、产品简介

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。

二、主要性能参数

  • 芯片类型:充电芯片(锂电池管理)
  • 适用电池:单节锂电池(1S)
  • 工作电压 VIN:4.0V ~ 6.5V
  • 最大充电电流 ICHG_MAX:800mA(可通过外部元件设置或限制)
  • 充电饱和电压 VCHG_END:4.20V(典型)
  • 静态电流 Iq:55µA(待机低耗)
  • 工作温度:-40℃ ~ +125℃
  • 封装:SOT-23-5
  • 品牌:MICRONE(南京微盟)

三、充电特性与工作原理

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。

四、典型应用电路要点

  • 输入电源:5V USB 或同类适配器,确保 VIN 在 4~6.5V 范围内。
  • 充电电流设置:通过外部设置元件(如程序电阻)或系统限流实现不超过 800mA。
  • 旁路电容:VIN 与 GND 之间放置合适的陶瓷电容(常见 1µF~10µF)以抑制噪声。
  • 状态指示:可加 LED 与限流电阻显示充电/完成状态。
  • 建议配合电池保护电路(过充/过放/过流保护)提升安全性。

五、封装与热管理

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。

六、选型与使用建议

  • 若系统供电接近 5V 且充电电流在数百毫安量级,ME4074BM5G 是低成本、简单实现的选择。
  • 对于要求高效率或需大电流快充的场景,建议评估开关型充电方案。
  • 强烈建议配合电池保护 IC 或使用带保护的电池组,符合安全规范。
  • 在极端温度环境下,测试并验证充电速率与热保护策略的可靠性。

七、典型应用场景

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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