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ETA ETA4054S2F
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ETA ETA4054S2F
- Type
- ETA
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ETA
- Electronic Component
- ETA4054S2F
- Electronic Component
- 1
- Package
- SOT23-5
- Electronic Component
- Battery Management
- Electronic Component
- 0.053g
- Electronic Component
- 1
- Features
- Programmable Current
- Electronic Component
- BM0259484783
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 4.25V~16V
- Battery Type
- Battery
- Battery
- 1
- ICType
- IC
- Static Current(Iq)
- 25uA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ETA4054S2F 产品概述
ETA4054S2F 是钰泰（ETA）面向单节锂电池充电管理的芯片方案，采用 SOT23-5 小封装，适合对体积、功耗和成本有严格要求的便携式应用。芯片支持典型的恒流—恒压（CC/CV）充电策略，稳定可靠，易于在各种单节锂电池系统中集成。
一、主要规格亮点
- 芯片类型：充电芯片（单节锂电池管理）
- 输入工作电压：4.25V ~ 16V，兼容 USB 5V 及更高电压适配器输入
- 最大充电电流：1A（设备最大可提供的充电能力）
- 充电饱和电压（终止电压）：4.20V（单节锂离子电池标准目标电压）
- 静态电流（Iq）：25μA，待机功耗低，有利于电池续航
- 工作温度：-40℃ ~ +85℃，适应广泛环境
- 电池温度检测：不支持（无内部热敏监测）
- 封装：SOT23-5，紧凑型表贴封装
- 品牌：ETA（钰泰）
二、功能与工作方式
- 基本工作：采用恒流（CC）阶段对电池快速充电，接近设定电压后切换到恒压（CV）阶段，最终电流逐步降低至饱和或终止条件。
- 低静态电流设计使得非充电状态下对电池的自耗降到最低，适合电池长时间独立供电的设备。
- 输入宽电压范围（4.25V~16V）提供了较大的系统设计灵活性，可配合不同供电源使用。
三、典型应用场景
- 可穿戴设备、蓝牙耳机等小型便携终端（对体积和功耗敏感）
- 物联网传感器、无线模块、电池供电的数据采集设备
- 小型手持设备、便携测量工具、单节移动电源等单节锂电系统
四、设计建议与注意事项
- 输入电压下限为 4.25V，设计时应保证供电源在整个工作工况下满足该门槛，以确保可靠充电。
- 由于芯片不支持电池温度检测，建议在系统中加入外部温度监测或软件层面的温度保护策略，以避免高温或低温下充电带来的安全隐患。
- 当充电电流接近 1A 且输入电压显著高于电池电压时，芯片及周边器件会产生较多热量（功耗约为 (Vin - 4.2V)×Icharge），需在 PCB 布局与散热上做相应处理（加大铜箔、保留热沉区域或采用散热片）。
- 推荐在输入端和电池端各配置合适的陶瓷或钽电容做去耦，保证充电稳定性与瞬态响应。
- 若需要电流可编程或状态指示（充电指示 LED、充满指示等），请在方案中预留外部元件接口。
五、优势概述
- 小封装、低静态电流，便于空间受限和对待机耗电敏感的产品使用。
- 宽输入电压范围提升了系统供电兼容性，适配多种充电源。
- 针对单节锂电池的 4.2V 目标电压优化，充电策略匹配电池化学特性，便于快速集成。
如需更详细的引脚功能、典型应用电路或 PCB 布局建议，可提供原厂数据手册以进行针对性设计与验证。
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