WMSIC Electronic Components

ETA ETA2847S2G

ModelETA2847S2G
PackageSOT-23-6
BrandETA
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ETA ETA2847S2G
Type
ETA
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ETA
Electronic Component
ETA2847S2G
Electronic Component
1
Package
SOT-23-6
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.04g
Electronic Component
1
Features
Electronic Component
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0226462275
Operating Temperature
40℃~+85℃@(TA)
Operating Voltage
4.5V~28V
Switching Frequency
500kHz
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.

ETA2847S2G 产品概述

一、产品简介

ETA2847S2G 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(Buck)拓扑并集成同步整流开关管,支持可调输出,工作电压范围宽(4.5V~28V),最大输出电流可达2A,开关频率约500kHz,适用于对体积、效率和成本有要求的便携及工业类电源方案。器件封装为 SOT-23-6,工作温度范围为 -40℃ 至 +85℃(TA)。

二、主要特点

  • 可调输出,适配多种输出电压需求。
  • 内置开关管并支持同步整流,提高轻载与重载效率并降低外部二极管损耗。
  • 宽输入电压范围(4.5V~28V),兼容常见车载、锂电、多节电池与工业总线电压。
  • 开关频率约500kHz,利于使用小型电感与减小外部元件尺寸。
  • 低静态电流(Iq ≈ 320µA),有利于降低待机功耗。
  • 封装:SOT-23-6,适合空间受限应用。

三、典型应用

  • 车载电子(非直接车规环境,请参考具体应用验证)
  • 通信设备、便携式仪器供电模块
  • 工业控制、电源管理板与点式稳压模块
  • 各类需要高效率、小尺寸降压转换的嵌入式系统

四、关键规格参数

  • 输出类型:可调
  • 拓扑结构:降压式(Buck)
  • 同步整流:是(内部MOSFET)
  • 开关管:内置
  • 静态电流(Iq):约320µA
  • 输出电流:最大2A(需关注热限与电感峰值电流)
  • 工作电压:4.5V~28V
  • 开关频率:约500kHz
  • 输出通道数:1
  • 工作温度:-40℃~+85℃(TA)
  • 封装:SOT-23-6
  • 品牌:ETA(钰泰)

五、封装与引脚(简介)

ETA2847S2G 采用 SOT-23-6 小型封装,适合表面贴装。典型引脚包括 VIN、GND、SW、FB、EN(或使能)等功能引脚。具体引脚定义与电气参数请以官方 datasheet 为准。

六、设计与布局建议

  • 输入电容尽量靠近 VIN 与 GND 引脚放置,采用低 ESR 陶瓷电容(如 X5R/X7R),值建议 10µF~47µF 视实际纹波与输入源阻抗调整。
  • 输出侧使用低 ESR 陶瓷电容,建议 10µF~100µF 以保证负载瞬态与稳定性;并注意并联适当旁路电容以改善高频特性。
  • 选择电感时,确保其峰值电流高于器件在最大输出电流下的电感峰值电流;典型电感量可根据输出电压与负载动态在几 µH 至几十 µH 范围取值(500kHz 频率下常见为 2.2µH~10µH),并关注 DCR 以减少损耗。
  • 布局时最小化高 di/dt 回路面积(VIN、SW、输入电容),把敏感信号(FB、EN)远离开关节点;GND 建议采用单点或大面积铜层散热与回流。
  • SOT-23-6 封装热阻较高,建议在 PCB 下方与周围铺设散热铜箔并通过多层过孔增强散热能力。

七、注意事项与参考

  • 器件具体性能(如开启参考、电压基准、保护机制、启动/关断特性等)请以官方 datasheet 为准;在关键应用(车规、医疗、长寿命工业)中需做完整可靠性验证。
  • 在设计 2A 级别输出时,关注元件发热与 PCB 散热,若需长期满载运行,考虑加大铜面积或应用热管理措施。
  • 调节输出电压通过外部分压电阻设置,选择高精度电阻可改善输出精度与温漂特性。

如需我帮忙根据给定输入/输出要求(例如 VIN、VOUT、IOUT)推荐具体电感、输入/输出电容和值计算及示意原理图元件清单,我可以继续提供参考设计。

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