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ETA ETA1621S2G
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ETA ETA1621S2G
- Type
- ETA
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ETA
- Electronic Component
- ETA1621S2G
- Electronic Component
- 1
- Package
- SOT-23-6
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.053g
- Electronic Component
- 1
- Features
- Electronic Component
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0262715356
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 2.5V~6V
- Switching Frequency
- 800kHz~1.2MHz
- 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.
ETA1621S2G 产品概述
ETA1621S2G 是钰泰（ETA）推出的一款升压型 DC-DC 转换器，采用 SOT-23-6 小尺寸封装，针对便携式与电池供电系统的升压需求进行了优化。器件内置开关管，输出可通过外部电阻分压调节，工作稳定可靠，适合对体积与功耗有较高要求的应用场景。
一、主要特性
- 功能类型：升压型（Boost）
- 输入电压范围：2.5V ~ 6V，适配单节锂电或两节镍氢电池等电源
- 开关频率：800kHz ~ 1.2MHz，频率较高，有利于减小外部电感与电容体积
- 同步整流：否（需要外部肖特基二极管作为整流元件）
- 静态电流：典型 250µA，有利于低功耗待机
- 开关管：内置，简化外围电路设计
- 输出通道：单路，输出电压可调
二、性能与应用注意点
- 高开关频率可以缩小滤波器件尺寸，但在布局和走线时需注意开关节点（SW）回流路径，减小 EMI 与杂散电感。
- 由于非同步整流架构，在大电流输出时效率低于同步式方案，建议在中小电流负载或对转换效率容忍的场合使用。
- 输出可调通过外部分压电阻实现，选择精度高的电阻可提升输出精度；输出滤波电容应选择低 ESR 的陶瓷电容以确保稳定性。
- 工作温度范围 -40℃ ~ +85℃，适用于工业级温度要求的常见场景，但需注意功耗与散热设计。
三、典型应用场景
- 便携式设备电压升压（如便携式音响、手持终端）
- 电池供电的传感器节点、无线模块供电
- 需要小型化封装与中等效率的电源管理场合
四、设计与布局建议
- 采用低阻抗的输入去耦（靠近 VIN 引脚放置 1µF~10µF 陶瓷电容），减小输入电感带来的振铃。
- 开关节点（SW）走线尽量短，肖特基二极管与输出电感、输出电容应靠近 SW 节点布置，形成最短回流环路。
- 输出取样电阻应放置在靠近 VOUT 与 FB 引脚位置，避免噪声引入误差。
- 为获得较高效率，选择低损耗的外部电感（合适电流等级、低 DCR）与快速肖特基二极管。
五、封装与选型建议
- 封装：SOT-23-6，适合贴片组装与空间受限的应用。
- 选型时关注最大输出电流、热阻以及具体应用效率需求；若负载电流较大或对效率要求高，可考虑同步整流的替代方案。
ETA1621S2G 以其低静态电流和高工作频率特点，适合小型、低功耗升压应用；在设计时注意非同步整流带来的效率折衷与 PCB 布局优化，可获得良好的性能表现。
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