WMSIC Electronic Components

NISSHINBO R5478N218CD-TR-FF

ModelR5478N218CD-TR-FF
PackageSOT-23-6
BrandNISSHINBO
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 26+

Available for RFQ

Technical data

Product details

18 specifications

Core information

Product name
NISSHINBO R5478N218CD-TR-FF
Type
NISSHINBO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
NISSHINBO
Electronic Component
R5478N218CD-TR-FF
Electronic Component
1
Package
SOT-23-6
Electronic Component
Battery Management
Electronic Component
0g
Electronic Component
1
Electronic Component
BM0264227697
Operating Voltage
1.5V~5V
ICType
IC
and Voltage
4.25V
Voltage
3V
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.

R5478N218CD-TR-FF 产品概述

一、产品简介

R5478N218CD-TR-FF 是 NISSHINBO 面向单节锂离子电池的电池保护芯片,采用 SOT-23-6 小型封装,适用于体积受限的便携设备与低功耗电池组。芯片工作电压范围为 1.5V 至 5V,专为单节锂电池(1-Cell Li-ion)提供完整的安全保护功能,包含过充保护、过放保护、过流保护与短路保护,并支持 0V 电池的唤醒充电。工作温度范围宽(-40℃ 至 +85℃),静态电流仅 1.2µA,适合长期待机或低功耗应用场景。

二、主要功能与特点

  • 支持单节锂离子电池保护(1-Cell Li-ion)。
  • 过充保护(充电饱和电压 4.25V),有效防止电池因过充引起的寿命下降与安全隐患。
  • 过放保护(放电截止电压 3.0V),防止过度放电导致电池容量衰减或不可逆损伤。
  • 过流与短路保护,提供对瞬态大电流与短路故障的防护。
  • 支持 0V 电池充电,适用于深放电电池的唤醒与恢复充电场合。
  • 极低静态电流 Iq = 1.2µA,适合对待机耗电敏感的便携产品。
  • 工作电压宽范围:1.5V~5V,兼容多种系统供电环境。
  • 工作温度范围 -40℃~+85℃,适应工业级或严苛环境使用。

三、典型应用场景

  • 可穿戴设备、蓝牙耳机、智能手环等小型消费电子。
  • IoT 终端、远程传感器与低功耗嵌入式设备。
  • 便携式医疗设备、小型手持工具与备用电源模块。
  • 单节锂电池供电的各类消费与工业应用。

四、封装与机械信息

R5478N218CD-TR-FF 采用 SOT-23-6 封装,体积小、易于自动化贴装,适合批量生产与表面贴装工艺。SOT-23-6 结构有利于在有限 PCB 面积上实现电池保护功能,并便于与充电管理或电源管理芯片并联布局。

五、设计使用要点

  • 电源与地端应做良好去耦,靠近封装放置适量陶瓷电容以抑制瞬态噪声。
  • 在实现 0V 唤醒充电时,需配合合适的充电源和限流策略,避免充电器输出对深放电电池造成冲击。
  • 虽然静态电流极低,但在系统长时间待机时仍建议注意整体电源管理与漏电路径控制。
  • PCB 布局应考虑热量散逸与电流回路最小化,短路或过流事件时有利于降低器件应力。
  • 在高可靠性应用中,建议对过流与短路保护的实际响应在目标系统中验证,保证与负载和电缆特性的兼容。

六、总结

R5478N218CD-TR-FF 为单节锂电池提供了一套轻量化且低功耗的保护解决方案,适合空间与能耗受限的各类便携与嵌入式设备。其关键参数(4.25V 充电饱和电压、3.0V 放电截止、支持 0V 唤醒、1.2µA 静态电流、-40℃~+85℃ 工作温度)使其在可靠性与功耗控制之间具备良好平衡。选择该芯片时,请结合实际系统的充电器特性与负载行为进行验证与优化。

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