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ETA ETA3521FSG
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ETA ETA3521FSG
- Type
- ETA
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ETA
- Electronic Component
- ETA3521FSG
- Electronic Component
- 1
- Package
- SOT-563
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.027g
- Electronic Component
- 1
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0226444663
- Operating Temperature
- 40℃~+85℃@(TA)
- Operating Voltage
- 2.5V~6V
- Switching Frequency
- 1.5MHz~2.5MHz
- Electronic Component
- Electronic Component
- Output Voltage
- 600mV~6V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ETA3521FSG 产品概述
一、产品简介
ETA3521FSG 是钰泰（ETA）推出的一款高集成度降压型开关稳压器，采用降压拓扑与内置开关管，并采用同步整流设计，支持可调输出电压（0.6V6V）。工作电压范围为 2.5V6V，最大输出电流可达 4A，开关频率在 1.5MHz2.5MHz 之间，静态电流仅 50µA，工作温度范围 -40℃+85℃（TA）。器件采用超小封装 SOT-563，适合对空间、效率及待机功耗有严格要求的便携或嵌入式系统。
二、主要特点
- 输入电压：2.5V ~ 6V，适配单节锂电池及常见电源轨。
- 输出电压可调：0.6V ~ 6V，灵活配置多种电压轨。
- 最大输出电流：4A，支持中高负载点对点供电。
- 同步整流：提高轻载与重载效率，降低功耗与发热。
- 高频工作（1.5MHz~2.5MHz）：支持更小体积的电感与电容，利于 PCB 紧凑设计。
- 超低静态电流 50µA：延长电池供电系统待机寿命。
- 小封装 SOT-563：占板面积小，适合空间受限场合。
三、典型应用
- 移动设备与便携终端的点对点供电（如 SoC、PMIC 前端）
- 可穿戴设备、IoT 传感器、蓝牙音频电源管理
- 单节锂电池供电系统的降压转换（例如将 3.7V 转为 1.2V/3.3V）
- 工业与消费类小型模块电源
四、设计注意事项
- 高频开关有利于减小元件尺寸，但可能增加 EMI，需在 PCB 布局上做好回流路径与滤波设计。
- 推荐选择饱和电流高于 4A 的低 DCR 电感；输出电容选用低 ESR 的陶瓷电容（X5R/X7R）以保证稳定性与瞬态响应。
- 输入电容应靠近 VIN 与 GND 引脚放置，以抑制开关尖峰并减小 EMI。
- SOT-563 封装热阻较大，需通过下层铜箔与散热铜带扩展热流，必要时在 PCB 增加过孔改善散热。
- 器件通常集成多种保护（如过流、短路、过温等），但具体保护参数建议参考官方数据手册以确保系统可靠性。
五、总结
ETA3521FSG 以其小封装、高开关频率、低静态电流与同步整流特性，为空间与能耗受限的电源设计提供了高性价比的降压解决方案。对于需要 4A 级别输出且要求尺寸小、效率高的便携及嵌入式应用，ETA3521FSG 是值得优先考虑的元件。有关详细电气特性、外部元件选型与参考电路，请参照钰泰官方数据手册。
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