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ETA ETA3409S2F
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ETA ETA3409S2F
- Type
- ETA
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ETA
- Electronic Component
- ETA3409S2F
- Electronic Component
- 1
- Package
- SOT23-5
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.042g
- Electronic Component
- 1
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0226168250
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 2.4V~7.3V
- Switching Frequency
- 1MHz
- Electronic Component
- Electronic Component
- Output Voltage
- 600mV~7.3V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ETA3409S2F 产品概述
一、产品简介
ETA3409S2F 是钰泰（ETA）面向移动与嵌入式电源设计的同步降压开关稳压器，SOT23-5 封装、内置开关管，工作电压范围 2.4V ~ 7.3V，输出可调 0.6V ~ 7.3V，最大输出电流 3A，开关频率 1MHz，工作温度 -40℃ ~ +85℃。高开关频率有利于减小外部元件尺寸，内部同步整流提升轻载到重载的转换效率。
二、主要参数（摘要）
- 输入电压 VIN：2.4V ~ 7.3V
- 输出电压 VOUT：0.6V ~ 7.3V（可调）
- 最大输出电流：3A
- 拓扑：降压（Buck），同步整流
- 开关频率：1MHz（典型）
- 封装：SOT23-5
- 工作温度：-40℃ ~ +85℃
三、特性与优势
- 同步整流：降低整流损耗，提高效率，对电池供电系统尤为重要。
- 内置开关管：简化外部布局与物料清单，便于小型化设计。
- 高频工作：1MHz 开关频率可采用更小体积的电感与电容，适合空间受限的移动设备。
- 宽输入/输出范围：适配单节锂电池或多样化电源方案，输出电压灵活可调。
四、典型应用与设计注意
- 典型应用：便携设备、MCU/FPGA 电源、通信终端、车载低压域辅助电源等。
- 外围元件建议：选用饱和电流高于 3A 的低 DCR 电感；输出采用多颗低 ESR 陶瓷电容以保证稳定性与瞬态响应；输入端加足够旁路电容以抑制输入纹波。
- 布局要点：VIN、GND、SW 节点走线尽可能短且宽，输入电容靠近器件 VIN-GND 引脚，减小开关噪声与辐射；SW 节点铜面积控制，避免辐射扩大。器件散热依赖 PCB 铜箔与接地平面，必要时扩展散热铜箔。
五、封装与选型建议
SOT23-5 封装适合体积受限的商业产品。设计时确认最大工作温度与散热条件、输入输出电压范围及瞬态负载要求。如需更高电流或更好热性能，可考虑更大封装或并联方案。购买与验证时参考厂家完整数据手册、典型应用电路与 PCB 布局参考，进行实测验证以满足系统可靠性要求。
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