WMSIC Electronic Components

LOWPOWER LP4034QVF

ModelLP4034QVF
PackageDFN-10-EP(3x3)
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 LP4034QVF
Type
LOWPOWER
Minimum package
5000 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LOWPOWER
Electronic Component
LP4034QVF
Electronic Component
1
Package
DFN-10-EP(3x3)
Electronic Component
Battery Management
Electronic Component
0.121g
Electronic Component
1
Features
Programmable Current
Electronic Component
BM0230808557
Operating Temperature
40℃~+125℃
Operating Voltage
4.1V~6.2V
Battery Type
Battery
Battery
1
ICType
IC
Static Current(Iq)
5uA

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

LP4034QVF 产品概述

一、产品简介

LP4034QVF 是 LOWPOWER(微源半导体)面向单节锂电池充电管理而设计的一款高性能充电芯片。芯片支持单节锂电池的恒流/恒压充电管理,具备电池温度检测能力,并在超宽工作温度范围内保持稳定工作。凭借最高 3.5A 的充电能力与极低静态电流,LP4034QVF 适用于对充电速度与系统待机功耗均有较高要求的便携与工业类产品。

二、主要规格

  • 芯片类型:充电芯片(单节锂电池充电管理)
  • 工作电压:4.1V ~ 6.2V(输入供电范围)
  • 最大充电电流:3.5A
  • 电池类型:锂电池(单节)
  • 电池节数:1 节
  • 工作温度:-40℃ ~ +125℃
  • 电池温度检测:支持(外接温度传感器检测)
  • 静态电流(Iq):5 µA(典型值)
  • 封装:DFN-10-EP (3 × 3 mm)
  • 品牌:LOWPOWER(微源半导体)

三、核心特点

  • 高电流充电能力:芯片提供高达 3.5A 的充电能力,适合需要快速充电或对充电速度有较高要求的单节锂电池系统。
  • 宽输入电压范围:4.1V 至 6.2V 的工作电压范围,使其可直接适配常见 5V USB 电源及其他稍高的电源方案。
  • 低静态电流:5 µA 的极低静态电流,有利于降低系统待机损耗,延长电池供电时间,适合对待机能耗敏感的便携设备。
  • 电池温度监测:支持对电池温度的检测(可外接 NTC 或其他温度传感元件),可实现充电温度窗口控制,提升充电安全性与电池寿命。
  • 宽工作温度:-40℃ 至 +125℃ 的工业级温度范围,能够满足恶劣环境或工业设备对温度适应性的要求。
  • 小封装、高集成度:DFN-10-EP (3×3 mm) 小封装,便于高密度 PCB 布局,同时底部散热焊盘(EP)利于散热性能优化。

四、封装与热管理

LP4034QVF 采用 DFN-10-EP (3×3 mm) 小型封装,芯片底部带有大面积散热焊盘(Exposed Pad)。在高充电电流(接近 3.5A)下,合理的 PCB 散热设计至关重要:

  • 在 PCB 中尽量在芯片底部扩展多层铜箔并通过过孔连接至内/底层,增加热量散发路径;
  • 外围电流通路(充电电感、肖特基/同步整流 MOSFET、取样电阻等)应采用宽铜迹并配置足够的焊盘;
  • 使用合适的电池电流检测电阻与外部 MOSFET(如需要功率分流或电源路径管理),并考虑其额定功率与散热。

五、典型应用场景

  • 移动电源(Power Bank)与便携式快充设备;
  • 便携式音响、手持终端、智能遥控器等消费电子设备;
  • 无人机和小型航模的电源管理模块;
  • 工业便携仪器、野外采集设备及对工作温度要求高的系统;
  • 需要在待机时保持极低静态耗电的物联网终端与可穿戴设备(若充电电流匹配)。

六、设计建议与注意事项

  • 输入电压须严格控制在 4.1V~6.2V 范围内,典型 USB 5V 电源可直接使用,但需注意 USB 或供电源的电流能力与线损。
  • 为实现稳定的最大充电电流,应根据系统需求选择合适的限流/取样元件(如取样电阻)并考虑 MOSFET、连接器的额定电流与散热。
  • 使用电池温度检测功能时,建议采用常见的 10 kΩ NTC 并按参考手册的门限值接入,以保证充电在安全温度范围内进行。
  • 由于芯片静态电流极低,适合需要长时间待机的应用,但在设计上仍需注意泄漏路径与外设耗电。
  • PCB 布局上应优先考虑散热与电流回路的最短路径,地线和电源焊盘要足够宽大,底部 exposed pad 必须焊接良好以保证散热与电气连接。

LP4034QVF 以其高充电电流能力、低静态功耗与工业级温度适应性,为单节锂电池的高效、可靠充电提供了一个平衡良好的解决方案。在实际设计中,请参考厂方完整 Datasheet 以获取引脚说明、电气特性、典型应用电路与外部元件选择建议。

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