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ETA ETA8103S2G
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ETA ETA8103S2G
- Type
- ETA
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ETA
- Electronic Component
- ETA8103S2G
- Electronic Component
- 1
- Package
- SOT-23-6
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.04g
- Electronic Component
- 1
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0226547714
- Operating Temperature
- 40℃~+125℃@(TJ)
- Operating Voltage
- 4V~18V
- Switching Frequency
- 1MHz
- Electronic Component
- Electronic Component
- Output Current
- 3A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ETA8103S2G 产品概述
一、产品简介
ETA8103S2G 是钰泰（ETA）推出的一款高集成度、可调输出的降压型同步整流开关稳压器。器件采用降压拓扑、内置功率开关管，封装为 SOT-23-6，面向体积受限但需较高输出电流的嵌入式和便携式电源应用。设计支持输入电压 4V～18V，最大连续输出电流 3A，开关频率 1MHz，工作结温范围 -40℃～+125℃，静态电流仅 230μA，适合对效率与待机功耗都有要求的系统。
二、主要特性
- 可调输出：通过外部分压电阻设置输出电压，适应多种系统电压需求。
- 同步整流：内置同步 MOSFET，提高转换效率、降低热耗，尤其在中高负载时优势明显。
- 高开关频率：1MHz 工作频率，允许使用更小尺寸的电感与电容，有利于实现紧凑电源布局。
- 低静态电流：230μA 待机电流，适合电池供电或低功耗待机场景。
- 宽输入范围与高电流能力：4V～18V 输入、3A 输出，可驱动常见 MCU、传感器以及功率放大器等负载。
- 宽温度范围：-40℃～+125℃（TJ）确保工业级环境适应性。
三、典型应用场景
- 便携式设备的主/辅助稳压电源（移动电源、手持终端）
- 汽车电子子系统（符合输入电压范围与高温工作要求）
- 工业控制板、仪器供电模块
- 通信设备与消费类电子的局部降压电源
四、封装与热管理
SOT-23-6 小封装适合空间受限的 PCB 布局，但在高输出功率时需关注散热。建议：
- 将器件与电感、输出电容布局紧凑，短且宽的电源回流路径以降低寄生电阻与电感；
- 使用足够铜箔面积作为热沉并连至地平面；
- 在高负载或高环境温度下评估结温（TJ），必要时使用更大铜面积或外部散热措施。
五、设计与选型建议
- 输入电容选择低 ESR 类型以抑制纹波与稳定输入回路，靠近芯片 VIN 引脚放置；
- 输出电容选用低 ESR 电解或陶瓷电容以满足瞬态响应与稳定性；
- 电感需选用饱和电流高于 3A 的器件并关注 DCR 以降低损耗；
- PCB 布局要保证开关节点走线短且远离敏感模拟信号，减少 EMI 与开关噪声耦合；
- 调节电阻网络建议使用精度较高的电阻以保证输出电压精度，必要时并入隔离或滤波以降低噪声。
六、总结
ETA8103S2G 以其内置开关、同步整流、高开关频率与低静态电流的组合，提供在小体积下实现 3A 输出的高性价比降压方案。合理的器件选型与 PCB 布局可在工业、汽车与便携产品中获得稳定、高效的电源性能。若需评估具体效率曲线、启动行为或详细典型电路，请参考官方数据手册并做好实验验证。
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