WMSIC Electronic Components

CONSONANCE CN3761

ModelCN3761
PackageSOIC-10-1mm
BrandCONSONANCE
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
CONSONANCE CN3761
Type
CONSONANCE
Minimum package
4000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CONSONANCE
Electronic Component
CN3761
Electronic Component
1
Package
SOIC-10-1mm
Electronic Component
Battery Management
Electronic Component
0.222g
Electronic Component
1
Features
Programmable Current
Electronic Component
BM0257674185
Operating Temperature
40℃~+85℃
Operating Voltage
4.5V~28V
Battery Type
Battery
Battery
1
ICType
IC
0VBattery
Electronic Component

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

CN3761 — 单节锂电池充电管理芯片概述

一、产品简介

CN3761 是由 CONSONANCE(上海如韵)推出的一款单节锂离子电池充电管理芯片,面向需高效、可靠充电控制的便携与工业类应用。芯片支持宽输入电压范围,能在较宽电源环境下为单节锂电池提供受控充电,适合对充电电流和充饱和压有明确要求的设计场景。

二、主要电气参数

  • 芯片类型:充电芯片(锂电池管理)
  • 输入工作电压:4.5V ~ 28V
  • 最大充电电流:4A(外部电流设定/限制)
  • 充电饱和电压(终止电压):4.2V(单节锂电池)
  • 电池类型:锂电池(Li-ion)
  • 电池节数:1 节
  • 0V 电池充电:不支持(需电池电压高于某一预充阈值)
  • 工作温度:-40 ℃ ~ +85 ℃
  • 品牌 / 封装:CONSONANCE(上海如韵),SOIC-10-1mm 封装

三、功能特点与优势

  • 宽输入电压范围(4.5–28V)适配多种电源来源(适配适配器、车载电源、USB boost 等)。
  • 支持最高 4A 的充电能力,满足中高倍率快速充电需求(需注意热耗散与外部器件选型)。
  • 指定充饱和电压为 4.2V,符合常见的单节锂离子电池充电规范,便于与电池厂商参数匹配。
  • 工作温度范围宽(-40 至 +85℃),适用于消费电子与部分工业场景。
  • 单节设计简化系统复杂度,免去多节均衡需求。

四、典型应用场景

  • 移动电源与便携充电设备(单节容量较大、需要较高充电电流的场合)。
  • 手持设备、无线工具与小型无人机等需要快速补能的终端。
  • 工业仪表与现场设备(在合适的电源管理与安全保护下)。
  • 车载或太阳能供电系统中的单节储能管理(需配合相应输入稳压/限流)。

五、设计注意事项与建议

  • 0V 电池不支持直接充电:若需为深度放电至接近 0V 的电池充电,必须在系统中加入外部前级唤醒或预充电路,或采用具有 0V 唤醒能力的专用方案。
  • 散热与功率管理:在高电流(接近 4A)工作时,芯片与外部限流器件(MOSFET、电阻、电感等)的发热显著,应做好布局与散热设计,必要时使用散热片或加大铜箔面积。
  • 外部电流设定与保护:推荐使用高精度电流检测与限流措施(分流电阻、外部恒流回路、过流保护器件),并考虑软启动以减小输入冲击。
  • 输入侧考虑抑制与滤波:为保证稳定工作,在输入端添加合适的滤波电容和浪涌抑制元件;当工作在车载等高噪声环境时需加强抑干扰设计。
  • 温度与安全:建议配合外部温度监测或热关断策略,防止高温下的不当充电;同时实现过压、短路与反接保护以提升系统可靠性。
  • PCB 布局:高电流路径尽量短、粗,功率器件靠近引脚布局,地平面完整,减少电阻与发热集中。

六、封装与可靠性

CN3761 提供 SOIC-10-1mm 封装,便于量产贴片与自动化装配。封装在高电流应用下需特别关注焊盘散热与 PCB 铜箔面积分配,以保证长期可靠性和一致的热性能。

七、总结

CN3761 适合用于单节锂离子电池、需要较高充电电流并在多样电源环境下运行的产品。使用时应重视 0V 唤醒限制、散热与电流保护方案,以及系统级的安全设计。对于追求稳定、可量产的单节充电解决方案,结合合适的外围保护与热管理措施,CN3761 可作为可靠的电源管理元件选择。

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