WMSIC Electronic Components

MICRONE ME2149FSG

ModelME2149FSG
PackageSOP-8
BrandMICRONE
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
MICRONE ME2149FSG
Type
MICRONE
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MICRONE
Electronic Component
ME2149FSG
Electronic Component
1
Package
SOP-8
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.182g
Electronic Component
1
Features
Electronic Component
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0229920311
Operating Temperature
25℃~+85℃
Operating Voltage
2.5V~6V
Switching Frequency
1MHz
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.

ME2149FSG 产品概述

一、产品简介

ME2149FSG 是南京微盟(MICRONE)推出的一款升压型 DC-DC 开关电源芯片,采用升压拓扑、内置开关管,并封装于 SOP-8。芯片支持可调输出,单路输出设计,输入电压工作范围为 2.5V ~ 6V,最高输出电流可达 2A,开关频率约为 1MHz,工作温度范围 -25℃ ~ +85℃,适用于以有限空间和中等功率需求为主的便携与嵌入式系统。

二、主要特点

  • 可调输出:通过外部分压电阻可设置多种输出电压,灵活适配不同负载需求。
  • 升压拓扑、内置开关管:减少外部元件数量与 PCB 布局复杂度,便于尺寸受限的应用。
  • 非同步整流:采用外部肖特基二极管作为整流元件,结构简单、可靠性高,但在高电流下效率相对低于同步方案。
  • 高频工作(≈1MHz):允许使用较小的电感与电容,节省器件体积与系统空间。
  • 单通道输出,最大输出电流 2A:适合为传感器、MCU 外围电路、白光 LED 驱动或小型通信模块等供电。

三、典型应用场景

  • 便携式设备电源升压(移动电源辅助、可穿戴设备)
  • 单节锂电池升压至系统工作电压(如 3.3V/5V)
  • 工业/楼宇传感器供电模块
  • 各类嵌入式控制板、通信模块、电源管理子系统

四、主要电气参数与工作条件(概览)

  • 输入电压 Vin:2.5V ~ 6V
  • 输出电流 Iout_max:2A(取决于热设计和外部整流器)
  • 开关频率:约 1MHz
  • 工作温度:-25℃ ~ +85℃
  • 封装:SOP-8
    说明:具体效率、启动/关断特性、保护功能(如过流、过温、输出短路等)的详细数值应参照厂商完整数据手册。

五、设计与布局建议

  • 电感选择:选择低直流电阻(DCR)且额定电流高于峰值电流的功率电感,频率高可选较小电感值以减小体积。
  • 整流二极管:由于为非同步整流,建议使用低正向压降的肖特基二极管以降低损耗与发热。
  • 输出/输入电容:优先采用低 ESR 的多层陶瓷电容(MLCC),靠近芯片放置输入电容与输出电容,减少回流回路面积。
  • 布局要点:开关节点(芯片开关脚、二极管、功率电感、输出电容)形成的高频回路应尽量短且紧凑;反馈网络与敏感参考点远离开关噪声源,并在地层上注意分隔高频功率地与模拟/信号地后汇流点。
  • 热管理:SOP-8 封装需考虑散热,必要时在 PCB 下方增加过孔连接内部铜层或增大散热铜箔。

六、选型与注意事项

  • 若对效率有更严苛要求或在高输出电流下希望降低损耗,可考虑同步整流方案的替代器件。
  • 应结合应用环境核实温升与保护机制,若数据手册未列出足够的保护功能,应在系统层面增加输入滤波、熔断或限流保护。
  • 在最终设计前,建议获取并严格参照 ME2149FSG 的官方数据手册与典型应用电路,进行仿真与实际板级调试以确认性能。

总之,ME2149FSG 以其内置开关、1MHz 高频和可调输出特性,适合空间受限、功率中等的升压电源方案;在布局与热设计得到良好保障的条件下,可为多种便携与嵌入式应用提供稳定可靠的升压解决方案。

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