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ETA ETA3485S2F
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ETA ETA3485S2F
- Type
- ETA
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ETA
- Electronic Component
- ETA3485S2F
- Electronic Component
- 1
- Package
- SOT23-5
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.04g
- Electronic Component
- 1
- Features
- EMI Optimization
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0226444665
- Operating Temperature
- 40℃~+85℃@(TA)
- Operating Voltage
- 2.6V~7V
- Switching Frequency
- 2MHz
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ETA3485S2F 产品概述
一、概述
ETA3485S2F 是钰泰（ETA）推出的一款高集成度同步整流降压型开关稳压器，采用 SOT23-5 小封装，适合空间受限且对能效有要求的便携及工业类应用。器件内置高侧/低侧开关管，支持可调输出，工作电压范围宽（2.6V ~ 7V），开关频率高达 2MHz，空载静态电流仅 20µA，连续输出电流可达 1.5A，工作温度范围 -40℃ ~ +85℃（TA）。
二、主要电气参数
- 输入电压 VIN：2.6V ~ 7V
- 输出电压 VOUT：可调 0.6V ~ 7V
- 最大输出电流：1.5A（连续）
- 开关频率：2MHz（典型）
- 同步整流：支持（内置低损耗同步开关）
- 静态电流 Iq：约 20µA（轻载/待机态）
- 封装：SOT23-5
- 拓扑结构：降压（Buck），内置开关管
三、产品特性与优势
- 高集成度：内置功率开关，减少外部元件数量，简化 PCB 布局与装配。
- 低静态功耗：20µA 静态电流有利于电池供电系统延长待机时间。
- 高频工作：2MHz 开关频率使输出滤波元件尺寸更小，利于降成本和缩小整机体积。
- 可调输出：0.6V~7V 宽范围，可覆盖多种电源轨需求（MCU、传感器、射频前端等）。
- 宽工作电压与工业温度范围：适应较广的输入源与工作环境。
四、典型应用场景
- 便携式设备电源（可提高能效并缩小体积）
- 工业控制与仪表（要求宽温、稳定输出）
- 消费类电子（摄像头模组、Wi‑Fi/蓝牙 模块供电）
- 电池管理与分轨供电方案
五、设计与选型建议
- 电感：由于 2MHz 的高频，推荐使用小体积低 DCR 高饱和电流的功率电感，额定电流需高于峰值电流以避免饱和与过热。
- 输入/输出电容：优先使用低 ESR MLCC，以降低纹波并保持环路稳定；输入电容应紧贴 VIN-GND 引脚放置。
- PCB 布局：VIN、GND 和 SW 节点走线尽量短且粗，SW 节点周围避免大面积敏感信号，地面采用完整地平面以改善热扩散与 EMI。
- 热管理：虽为小封装，长期大电流运行时注意散热路径，必要时在 PCB 下方或附近增加铜箔面积。
- 保护与可靠性：在系统设计中宜考虑输入反向保护、软启动与适当的壳体/PCB 散热设计以提高可靠性。
六、封装与引脚
- 封装形式：SOT23-5（小型封装，便于表贴装配）
- 引脚功能：常见涉及 VIN、GND、SW、FB（反馈）、EN/ENable 或类似引脚；具体引脚定义与封装尺寸请参考 ETA 官方数据手册以获得精确信息。
七、结论
ETA3485S2F 以其低静态电流、高开关频率与内置同步整流的设计，适合对效率、体积和待机功耗有较高要求的应用。选用时请参阅 ETA 官方器件手册完成详细的电气参数、典型应用电路与布局示意，以确保设计性能与长期可靠性。
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