WMSIC Electronic Components

ETA ETA3448S2F

ModelETA3448S2F
PackageSOT23-5
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 ETA3448S2F
Type
ETA
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ETA
Electronic Component
ETA3448S2F
Electronic Component
1
Package
SOT23-5
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.041g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0226168249
Operating Temperature
40℃~+85℃
Operating Voltage
2.5V~5.5V
Switching Frequency
1.5MHz~2.5MHz
Electronic Component
Electronic Component
Output Voltage
600mV~5.5V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

ETA3448S2F 产品概述

一、产品简介

ETA3448S2F 是钰泰(ETA)推出的一款高集成度降压型开关稳压器,采用同步整流降压拓扑,内置开关管,单通道输出,面向对效率、尺寸与低静态电流有较高要求的电源设计。器件工作电压范围宽、可调输出、电流能力强,适用于移动设备、电池供电系统、便携式仪器及工业控制等场合。

二、主要规格概览

  • 输出类型:可调
  • 拓扑结构:降压式(Buck)
  • 同步整流:是(集成同步 MOSFET,提高转换效率)
  • 开关管:内置
  • 输入电压:2.5V ~ 5.5V
  • 输出电压:0.6V ~ 5.5V(可通过外部分压调整)
  • 输出电流:最高 3A
  • 开关频率:1.5MHz ~ 2.5MHz(典型值有助于缩小外围元件尺寸)
  • 静态电流(Iq):约 50µA(待机功耗低)
  • 工作温度:-40℃ ~ +85℃
  • 输出通道数:1(单路)
  • 封装:SOT23-5
  • 品牌:ETA(钰泰)

三、主要功能与优势

  • 高效率:同步整流设计在中高负载时可显著降低导通损耗,提升能效,延长电池续航。
  • 低静态电流:50µA 的待机电流有利于低功耗应用,适合待机时间长的便携设备。
  • 高频率开关:1.5–2.5MHz 的工作频率允许使用小尺寸电感与陶瓷电容,使整体方案体积更小。
  • 宽输入/输出范围:2.5–5.5V 输入兼容常见电池与单芯片供电;0.6–5.5V 可调输出覆盖多种负载电压需求。
  • 小封装:SOT23-5 封装适合空间受限的设计,并利于成本控制与自动贴装。

四、典型应用

  • 智能手机与蓝牙耳机等便携终端电源管理
  • 电池供电的物联网终端、传感器节点
  • 可穿戴设备与便携式医疗设备
  • 工业控制与消费类电子的点电源模块

五、设计建议与注意事项

  • 电感选择:由于高开关频率,建议选用低直流电阻(DCR)且额定电流高于3A 的功率型电感,典型电感值根据占空比与纹波要求选择(常见 0.6µH–2.2µH 区间)。
  • 输出电容:优先采用低 ESR 陶瓷电容(X5R/X7R)以保证输出稳定性与低纹波;并按器件推荐值布局输入、输出去耦。
  • 布局要点:尽量缩短 VIN、GND、SW 之间的环路;输入电容靠近 VIN 引脚布局,输出电容靠近器件反馈网络与地。
  • 散热与热设计:高负载工况下功耗增加,要保证较好的散热路径与合理的 PCB 铜箔面积,以避免过热降额。
  • 稳定与环路补偿:输出电容类型与大小会影响控制环路稳定性,请根据参考设计或评估板调试反馈分压网络与补偿方案。

六、封装与引脚(概述)

  • 封装形式:SOT23-5,利于小体积系统集成。
  • 常见引脚功能:VIN、GND、SW(开关输出)、FB(反馈)、EN/ILIM(若器件支持)。实际引脚定义请参考官方数据手册以获得准确接线与功能说明。

七、结论

ETA3448S2F 提供了一种高效、低功耗、体积小的降压稳压解决方案,适合对空间和电源效率有严格要求的便携及嵌入式应用。建议在设计前参照钰泰官方数据手册与评估板进行仿真与验证,确保在目标工作条件下达到预期的电气性能与热性能。若需进一步的典型电路、布局范例或样片信息,请以产品数据手册为准或联系供应商获取支持。

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