WMSIC Electronic Components

LOWPOWER LP28056SPF

ModelLP28056SPF
PackageESOP-8
BrandLOWPOWER
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LOWPOWER LP28056SPF
Type
LOWPOWER
Minimum package
4000

Technical parameters

Electronic Component
LOWPOWER
Electronic Component
LP28056SPF
Electronic Component
1
Package
ESOP-8
Electronic Component
Battery Management
Electronic Component
0.019g
Electronic Component
1
Features
Programmable Current
Electronic Component
BM0229953838
Operating Temperature
40℃~+85℃
Operating Voltage
4.5V~6.5V
Battery Type
Battery
Battery
1
ICType
IC
Static Current(Iq)
1uA
and Voltage
4.2V

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

LP28056SPF 产品概述

一、产品简介

LP28056SPF 为 LOWPOWER(微源半导体)面向单节锂离子电池充电管理的高性能充电芯片。器件支持工作电压范围 4.5V 至 6.5V,最大充电电流可达 1.2A,充电终止电压(饱和电压)为 4.2V,静态电流极低仅为 1μA,适用于对待机能耗要求苛刻且需可靠充电管理的便携设备与物联网终端。器件封装为 ESOP-8,工作温度范围宽 (-40℃ ~ +85℃),便于工业级与民用级产品设计。

二、主要特性

  • 输入电压范围:4.5V ~ 6.5V,兼容常见 USB/适配器供电环境
  • 充电模式:支持锂电池常用的恒流/恒压充电特性,充饱和电压 4.2V
  • 最大充电电流:1.2A,适配中小功率移动电源和便携式终端
  • 超低静态电流:Iq = 1μA,降低系统待机耗电,延长电池寿命
  • 宽温度工作范围:-40℃ ~ +85℃,适用于大多数室内外环境
  • 封装:ESOP-8,便于散热和 PCB 布局

三、典型应用

  • 便携式消费电子:蓝牙耳机、无线鼠标/键盘、便携音箱等
  • 物联网终端:传感器节点、智能报警、手持数据终端
  • 小型电源模块与备用电池管理:单节锂电池的充电与维护
  • 工业与户外设备:要求宽温范围与低待机电流的装置

四、设计要点与建议

  • 充电方式与热管理:在输入电压显著高于电池电压且工作电流较大时(接近 1.2A),如果芯片为线性调节结构,器件功耗等于 (Vin − Vbat) × Icharge,会产生较大热量。建议在高输入差或高充电电流场景下做好散热设计(加大铜箔面积、使用散热垫或改用降压预稳压方案)。
  • 外围滤波与去耦:建议在电源输入端与电池端放置低 ESR 电容,靠近芯片的引脚布局去耦电容以抑制瞬态与振铃。
  • PCB 布局:将大电流回路(输入、充电路径、接地)走宽铜以降低电阻并改善散热,尽量缩短电流回路的走线长度,独立模拟与强电地的连接点(星形接地)可降低干扰。
  • 温度保护与充电安全:尽管器件工作温度范围宽,建议在系统设计中加入热敏监控(如 NTC)并结合电路逻辑在异常温度时限制或停止充电,以提升电池与整机可靠性。
  • 电磁兼容与滤波:在对 EMI 有严格要求的应用中,可在输入端加 LC 滤波器并选择合适的布局以降低辐射与传导干扰。

五、典型外部器件与电路提示

  • 输入旁路电容(例如 10μF~47μF 低 ESR)与输入滤波电感(若需)
  • 电池端去耦电容(例如 10μF~100μF)以稳定充电电压
  • 电流感测或限流元件(依据系统实现方式选择电阻或外置 MOS)
  • 建议在电源输入处加入反向保护或熔断元件用于过流/反接保护(视系统可靠性要求)

六、封装与热性能

LP28056SPF 采用 ESOP-8 封装,便于焊接与热传导。对于持续高电流工作场景,建议在 PCB 下方和周围布局充足的铜箔和过孔形成散热通道,以降低结温并保证长期可靠性。设计时应参考实际功耗评估结温并预留足够的热裕度。

七、总结

LP28056SPF 以其宽输入电压、1.2A 的充电能力、4.2V 的充电终止电压及超低 1μA 静态电流,适合对能耗敏感、要求可靠单节锂电池充电管理的便携与嵌入式产品。设计时需重视热管理与合理的外围元件选型,结合良好 PCB 布局可获得稳定、高效的充电性能。若需进一步的电气参数、引脚定义或典型应用电路图,建议参考器件的详细数据手册或联系 LOWPOWER(微源半导体)获得完整设计资料。

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