WMSIC Electronic Components

TECH PUBLIC TP4057

ModelTP4057
PackageSOT-23-6
BrandTECH PUBLIC
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
TECH PUBLIC TP4057
Type
TECH PUBLIC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
TP4057
Electronic Component
1
Package
SOT-23-6
Electronic Component
Battery Management
Electronic Component
0.03g
Electronic Component
1
Features
Programmable Current
Electronic Component
BM0264777483
Operating Temperature
40℃~+85℃
Operating Voltage
4V~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.

TP4057 产品概述

一、简介

TP4057 是一款针对单节锂离子电池的高性能线性恒流/恒压充电管理芯片。器件采用 SOT-23-6 封装,外部元件需求少,适用于体积受限的便携式产品。内部采用特殊 MOSFET 结构并具有防倒充电路,无需外接电流检测电阻和隔离二极管,可直接由 USB 或适配器电源供电使用。

二、主要参数

  • 芯片类型:单节锂电池充电芯片(线性)
  • 输入工作电压:4.0 V ~ 6.5 V
  • 最大充电电流:500 mA(可编程)
  • 充电饱和电压:4.24 V(典型)
  • 适配电池:单节锂离子电池(1S)
  • 工作温度:-40 ℃ ~ +85 ℃
  • 静态电流(Iq):约 25 μA
  • 封装:SOT-23-6
  • 品牌:TECH PUBLIC(台舟电子)

三、功能特点

  • 恒流/恒压充电:实现标准的 CC/CV 充电曲线,保证电池充电效率与寿命。
  • 可编程充电电流:通过外部电阻调整最大充电电流,上限 500 mA,便于不同容量电池匹配。
  • 充电终止与自动再充电:充电完成后自动停止,电池电压下降到设定值后自动重新充电。
  • 软启动与涓流充电:对低电压电池提供柔性启动和小电流预充,保护电池并延长寿命(注意:芯片不支持对完全 0V 电池的激活充电)。
  • 欠压锁定与防倒充:输入或输出异常时自动保护,防止电池向输入回流。

四、限制与注意事项

  • 不支持电池温度检测功能;如需热敏保护需外部实现。
  • 不支持对完全放电至 0V 的电池直接唤醒充电,初次使用或深度放电电池需采取外部激活手段。
  • 线性充电器在输入与电池电压差较大、或高电流工作时会产生较多热量,需注意散热设计与功率耗散评估。
  • 推荐按照 datasheet 选择 Rprog 与外围电容,保证充电稳定性与安全性。

五、典型应用

  • 手机配件、蓝牙耳机、便携仪表、手持设备、USB 供电的小型电子产品等需要对单节锂电池进行可靠充电的场景。

总结:TP4057 以其小封装、外围简单、功能全面的特性,适合对空间与成本敏感的单节锂电池充电设计。在实际应用中应重视散热与对 0V/深度放电电池的处理策略,并根据系统需求配合必要的外部保护与指示电路。

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