WMSIC Electronic Components

LOWPOWER LP4054HB5F

ModelLP4054HB5F
PackageSOT-23-5
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LOWPOWER LP4054HB5F
Type
LOWPOWER
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LOWPOWER
Electronic Component
LP4054HB5F
Electronic Component
1
Package
SOT-23-5
Electronic Component
Battery Management
Electronic Component
0.048g
Electronic Component
1
Features
Programmable Current
Electronic Component
BM0226576591
Operating Temperature
20℃~+85℃
Operating Voltage
4.5V~6.5V
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.

LP4054HB5F 产品概述

一、产品简介

LP4054HB5F 是微源半导体(LOWPOWER)推出的一款单节锂离子电池线性充电管理芯片,封装为 SOT-23-5。器件支持恒流—恒压(CC/CV)充电方式,工作电压范围为 4.5V 到 6.5V,设计用于通过简单的外围元件对单节锂电池(4.2V 截止)进行可靠充电。该器件静态电流仅 50µA,适合对待机功耗有要求的便携式设备。

二、主要性能要点

  • 芯片类型:线性充电管理芯片(单节锂电池)
  • 输入工作电压:4.5V ~ 6.5V
  • 最大充电电流:600mA(通过外部电阻限制和器件能力决定,不得超过该值)
  • 充电饱和/终止电压:4.2V(单节锂电池标准)
  • 0V 电池充电:不支持(无法对深度放电至 0V 的电池进行唤醒充电)
  • 静态电流(Iq):50µA(适合低功耗应用)
  • 封装:SOT-23-5

三、典型应用场景

  • 蓝牙耳机、可穿戴设备、便携式传感器
  • 便携式控制器与遥控器
  • 小型电子玩具、手持仪表
  • 需要低待机电流和简化外围器件的单节锂电池充电方案

四、外围设计要点与建议

  • 充电电流设置:通过外部电阻(PROG)设定充电电流,设计时根据电池厂家建议与系统热预算选择合适电流,且不超过 600mA。
  • 输入与输出电容:建议在 VIN 与 GND、BAT 与 GND 处分别放置稳压旁路电容以稳定输入与输出电压,减小噪声与瞬态。
  • 状态指示:可在 STAT 引脚连接 LED 与限流电阻实现充电/完成指示(若器件提供状态引脚)。
  • PCB 布局:尽量缩短输入电容与芯片 VIN、GND 引脚之间的回流路径,BAT 与芯片连接走粗线或加铜,便于散热。
  • 热限与散热:线性充电器在高压差与大电流下会产生较大功耗,注意器件功耗((VIN−VBAT)×ICHG)并做好热设计或降低充电电流以避免热降额。

五、器件优势与注意事项

  • 优势:封装小、外围简单、低静态电流,适合体积受限且待机功耗敏感的单节锂电池系统。
  • 注意事项:不支持对完全放电至 0V 的电池进行唤醒充电;若系统需支持深度放电电池应选用带前级唤醒功能的方案或增加外部电路;在高环境温度或输入电压较高时需关注热限和充电效率。

六、封装与采购信息

  • 品牌:LOWPOWER(微源半导体)
  • 型号:LP4054HB5F
  • 封装形式:SOT-23-5,适合小型化 PCB 设计。

如需详细原理图、典型应用电路图或为特定电池与系统条件优化充电参数(如设置充电电流、配置状态指示、热评估),可提供电池型号与系统工况,我可进一步给出具体的外围元件值与布局建议。

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