WMSIC Electronic Components

LOWPOWER LP4076ESPF

ModelLP4076ESPF
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LOWPOWER LP4076ESPF
Type
LOWPOWER
Minimum package
4000 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LOWPOWER
Electronic Component
LP4076ESPF
Electronic Component
1
Package
ESOP-8
Electronic Component
Battery Management
Electronic Component
0.178g
Electronic Component
1
Features
Programmable Current
Electronic Component
BM0230814780
Operating Temperature
20℃~+140℃
Operating Voltage
4.5V~6V
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.

LP4076ESPF 产品概述

一、产品简介

LP4076ESPF 是微源半导体(LOWPOWER)推出的一款单节锂离子电池充电管理芯片,封装为 ESOP-8。芯片支持典型的锂电池充电流程,最大充电电流为 1A,工作电压范围为 4.5V 至 6V,适合以 5V USB 或单节升压/稳压输入为电源的便携与嵌入式设备。

二、主要电气与工作参数

  • 最大充电电流:1A(设计应用时需按热量与电源能力限制设置)
  • 工作电压:4.5V ~ 6V(输入电源需稳定在该范围)
  • 充电饱和电压:4.2V(典型单节锂电池满充电压)
  • 静态电流 (Iq):190µA(闲置功耗低,利于系统待机省电)
  • 电池类型 / 节数:锂离子电池,单节(1S)
  • 0V 电池充电:不支持(不能对深度放电至 0V 的电芯进行唤醒式充电)
  • 电池温度检测:支持(可接电池热敏元件,实现温度保护或限流策略)
  • 工作温度范围:-20℃ ~ +140℃(高温容忍度较强,适用于工业与高温环境)
  • 封装:ESOP-8(便于散热与 PCB 布局)

三、功能特点与优势

  • 适配 1A 充电需求,满足中速至快速充电场景;
  • 低静态电流,降低待机损耗,适合电池供电设备的长期待机;
  • 支持电池温度检测,提升充电安全性,可按温度自动限制或禁止充电;
  • 宽输入电压范围,兼容多种供电方式(USB、模块电源等);
  • ESOP-8 包装便于 PCB 散热设计,适合功率与热管理要求较高的应用。

四、典型充电流程与注意事项

LP4076ESPF 通常在系统设计中采用 CC(恒流)→ CV(恒压)两阶段对单节锂电池充电:先以设定的恒流(不超过 1A)对电池充电,当电池电压接近 4.2V 后转为恒压模式并缓慢降低充电电流直至终止。由于芯片不支持 0V 唤醒充电,设计时需确保保护电路不会将电池放电至 0V,或在电池被过放后采用外部恢复电路。

建议在设计时注意:使用合适的电流检测电阻与滤波电容、在输入端加足够的去耦电容、防止输入瞬态导致芯片误动作;若并联 MOSFET 或外部功率器件,应考虑热耗散与 PCB 热路径设计。

五、保护与可靠性建议

  • 电池温度检测:建议接 NTC 热敏电阻,并在固件或硬件中实现温度范围判断,超温或低温时限制或禁止充电;
  • 过流/过压保护:虽然芯片具备基本充电控制,外部输入侧仍需考虑过压保护与限流设计;
  • 热管理:在高环境温度或接近最大充电电流时,注意芯片与周围器件的散热,必要时采用较大铜箔面积或散热片;
  • 对于深度放电电池,需采用外部唤醒方案或提示用户避免直接使用 0V 电池。

六、典型应用场景

  • 便携设备与无线终端(蓝牙音箱、手持终端、智能传感器等)
  • 低功耗与长待机的 IoT 装置
  • 工业与户外设备(需注意温度范围与散热策略)
  • 单节锂电池供电的充电模块与电源管理系统

七、设计与选型建议

在选型时,若系统要求对 0V 深放电电池有唤醒功能,需选用支持 0V 唤醒的充电芯片或增加外部恢复电路。若系统持续工作在高温或需长期 1A 充电,建议在 PCB 设计上给予芯片良好散热路径,并在布局中把输入电容、感测电阻尽量靠近芯片引脚以减少寄生与噪声。静态电流低是优势,但若产品对超低待机功耗有更苛刻要求,可综合比较更低 Iq 的方案。

总结:LP4076ESPF 是一款面向单节锂电池、支持电池温度检测、最大 1A 充电的充电管理芯片,适合多数便携与嵌入式应用。合理的外围电路与热管理设计能发挥其低功耗与稳定充电的优势。

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