WMSIC Electronic Components

MICROCHIP MCP73832T-2DCI/MC MCP73832T

ModelMCP73832T-2DCI/MC
PackageDFN-8(2x3)
BrandMICROCHIP
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
MICROCHIP MCP73832T-2DCI / MC
Type
MICROCHIP
Minimum package
3300 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MICROCHIP
Electronic Component
MCP73832T-2DCI/MC
Electronic Component
1
Package
DFN-8(2x3)
Electronic Component
Battery Management
Electronic Component
0.8g
Electronic Component
1
Features
Programmable Current; Current
Electronic Component
BM0260291084
Operating Temperature
40℃~+85℃
Operating Voltage
3.75V~6V
Battery Type
Battery
Battery
1
ICType
IC
Static Current(Iq)
53uA

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

MCP73832T-2DCI/MC 产品概述

一、产品简介

MCP73832T-2DCI/MC 是 MICROCHIP(美国微芯)推出的一款单节锂离子/聚合物电池线性充电管理芯片。该器件采用 DFN-8-EP (2x3 mm) 小封装,面向空间受限的便携式电子产品。芯片支持恒流/恒压(CC/CV)充电流程,工作电压范围宽(3.75 V 至 6 V),最大可设定充电电流约 550 mA,充电终止电压为 4.20 V,适用于单节锂电池充电场景。

二、主要参数

  • 芯片类型:充电芯片(线性充电管理)
  • 工作电压:3.75 V ~ 6 V
  • 最大充电电流:550 mA(通过外部电阻或器件选型设定)
  • 充电饱和电压(终止电压):4.20 V
  • 电池类型:锂离子 / 聚合物(单节)
  • 电池节数:1 节
  • 工作温度范围:-40 ℃ ~ +85 ℃
  • 电池温度检测:不支持(无独立热敏输入)
  • 静态电流(Iq):53 μA(典型/静态待机电流)
  • 封装:DFN-8 (2x3) 带散热焊盘(DFN-8-EP)

三、功能特点

  1. CC/CV 充电算法:实现先恒流后恒压的充电过程,适配常见的锂电池充电要求。
  2. 可编程充电电流:通过外部电阻或器件内置选型设置目标充电电流,最高可达约 550 mA,便于根据电池容量与热预算调整。
  3. 充电完成检测:当电池电流下降到设定终止电流时判定充电完成,并可通过状态引脚输出充电状态指示(通常为开漏 STAT 输出)。
  4. 热调节保护:当芯片或环境温度升高时会自动降低充电电流以保护器件与电池(散热路径依赖于板级设计和封装散热焊盘)。
  5. 低静态电流:待机功耗低(约 53 μA),有利于系统整体能耗控制。
  6. 小尺寸封装:DFN-8-EP(2x3 mm)节约 PCB 面积,适合小型化产品设计。

四、封装与热管理建议

MCP73832T-2DCI/MC 的 DFN-8-EP 封装带有暴露焊盘(exposed pad),能显著改善热传导。设计时建议:

  • 在 PCB 布局中为暴露焊盘连同多层过孔导热至内层/底层铜箔,以提升散热能力。
  • 在高充电电流(接近 500 mA 以上)或高环境温度下,保证足够的铜箔面积和热通道,以避免触发热限流导致降低充电电流。
  • 输入/输出端布置适当的去耦电容,确保充电稳定性和瞬态响应。

五、典型应用场景

  • 便携式消费电子:蓝牙耳机、手持设备、小型测量仪器。
  • 可穿戴设备与智能配件(单节锂电池供电)。
  • 小型电源模块与单节移动电源(低功耗场景)。
  • 需要体积小、外围元件少且可靠的单节锂电池充电方案。

六、设计要点与注意事项

  • 由于芯片不支持电池温度检测(无 TS 引脚),若产品在极端环境下工作或对电池温度敏感,建议在系统层面增加温度监测与保护措施。
  • 编程充电电流时需核算电阻精度与功率,并考虑 PCB 温升对充电效率的影响。
  • 当输入电压较高(接近 6 V)或外部器件损耗较大时,线性充电会在芯片内耗散较多功率,应评估热能力与是否需要改用开关型充电方案。
  • 注意 STAT/指示引脚的外形配置(开漏输出需上拉电阻),以及与系统 MCU 的逻辑兼容性。

七、总结

MCP73832T-2DCI/MC 以小封装、低静态电流与可编程充电电流为主要优势,适用于需要单节锂电池充电管理且对 PCB 面积和外围器件数量有严格要求的便携类和消费类产品。设计中需重视封装散热和系统级温度管理,合理设定充电电流与输入条件,以保证充电效率与器件可靠性。若产品场景对温度检测或更高转换效率有强烈需求,可在方案选型阶段考虑是否采用带温度感应或开关型充电管理器件。

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