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ETA ETA3417S2F
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ETA ETA3417S2F
- Type
- ETA
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ETA
- Electronic Component
- ETA3417S2F
- Electronic Component
- 1
- Package
- SOT23-5
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.042g
- Electronic Component
- 1
- Features
- EMI Optimization
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0231133064
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 2.6V~7V
- Switching Frequency
- 3MHz
- 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.
ETA3417S2F 产品概述
一、简介与定位
ETA3417S2F 是钰泰（ETA）推出的一款高频降压型同步整流开关稳压器，采用 SOT23-5 小封装，适合对体积、效率和电池续航有较高要求的便携式电子产品。器件工作电压范围宽（2.6V–7V），输出电压可调（0.6V–7V），最大输出电流 2.5A，内部集成开关管，典型开关频率高达 3MHz，静态电流仅 32µA，适合单节锂电或 USB 5V 等供电场景。
二、主要特点
- 输入电压：2.6V ~ 7V，兼容单节锂电、USB 5V 等常见电源。
- 输出电压：0.6V 可调起始，最高可至 7V，灵活适配多种电压轨。
- 输出电流：最高 2.5A（峰值能力用于瞬态负载）。
- 高频工作：3MHz 开关频率，利于使用小体积电感与陶瓷电容，系统占板面积小。
- 同步整流：内置同步开关，效率更高、热损耗更低。
- 低静态电流：Iq = 32µA，有利于电池待机寿命。
- 封装：SOT23-5，适合空间受限的应用。
三、典型应用
- 单节锂电池供电的智能终端、蓝牙耳机、可穿戴设备。
- 手机周边、便携式测量仪器、手持设备的主/从电源轨。
- 需要高频降压并占板小的消费电子产品。
四、设计要点与推荐外部元件
- 反馈设定：采用外部分压实现输出可调，参考公式 VOUT = 0.6 × (1 + Rtop/Rbot)，建议 Rbot 10k–50k 范围以兼顾功耗与抗干扰。
- 电感选择：由于 3MHz 高频，建议选择高频铁粉或纳芯片电感，典型值 0.47µH–1.0µH，额定电流 ≥3A，低 DCR 以减小损耗。
- 输入电容：采用 10µF（或更多）X5R/X7R 陶瓷，靠近 VIN 与 GND，低 ESR 有利抑制纹波。
- 输出电容：建议 22µF 陶瓷起步，配合器件稳定；若需更低输出纹波，可并联多颗陶瓷。
- 开启/关断：EN 脚可用于外部控制省电模式；拉低 EN 进入关断，静态电流降至微安级（参考典型值）。
五、热与版图注意事项
- SOT23-5 封装散热受限，应在 PCB 上使用较大面积的铜箔做散热通路，尤其是 GND 和 VIN 附近。
- 高频开关节点（SW）走线应短、粗，输入电容靠近 VIN 与 GND，输入回流环路尽量缩短，减少 EMI 干扰。
- 若近旁有敏感模拟电路，应考虑 EMI 屏蔽与滤波。
六、优势与选型建议
ETA3417S2F 以高开关频率与同步整流实现小尺寸、高效率的设计目标，低静态电流适合电池供电场景。选型时若关注更高输出电流或更强散热能力，可考虑更大封装或外置开关管的解决方案；若对板面空间和成本敏感，SOT23-5 的 ETA3417S2F 是很合适的选择。
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