WMSIC Electronic Components

TI LMR54406DBVR

ModelLMR54406DBVR
PackageSOT-23-6
BrandTI
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
TI(Texas Instruments) LMR54406DBVR
Type
TI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TI(Texas Instruments)
Electronic Component
LMR54406DBVR
Electronic Component
1
Package
SOT-23-6
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.014g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0229921597
Operating Temperature
40℃~+125℃
Operating Voltage
4V~36V
Switching Frequency
1.265MHz
Electronic Component
Electronic Component
Output Voltage
1V~28V

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

LMR54406DBVR 产品概述

一、概述

LMR54406DBVR 是德州仪器(TI)推出的一款降压型(Buck)同步整流 DC-DC 开关稳压器,输入电压范围宽(4V36V),输出可调(1V28V),最大输出电流 600mA,开关频率约 1.265MHz,封装为紧凑型 SOT-23-6。器件集成高侧/低侧开关管,静态电流仅 80μA,工作温度范围 -40℃ 至 +125℃,适合空间和能耗受限的多种电源设计。

二、主要特性

  • 宽输入电压:4V ~ 36V,适用于汽车、工业和消费类电源输入环境。
  • 可调输出电压:1V ~ 28V,灵活满足多路电压要求(单通道输出)。
  • 输出电流:最大 600mA,内部开关管设计,简化外部器件选型。
  • 高开关频率:约 1.265MHz,利于采用小体积电感与电容,降低 PCB 面积。
  • 低静态电流:Iq ≈ 80μA,有利于电池供电系统延长待机时间。
  • 同步整流:提高转换效率、降低功耗与发热。
  • 工作温度:-40℃ ~ +125℃,满足工业级可靠性要求。

三、封装与引脚

LMR54406DBVR 采用 SOT-23-6 小封装,适合空间受限的便携和车载应用。因内部集成开关管与驱动,外部仅需少量通用被动元件(电感、输入/输出电容、反馈电阻)即可实现完整电源模块。

四、典型应用场景

  • 汽车电子低压域转换(车载 12V/24V 至单片机或传感器电源);
  • 工业控制与仪表的点对点稳压;
  • 便携设备、手持终端的高效率电源管理;
  • 通信与网络设备的辅助电源。

五、设计要点与建议

  • 采用高频(≈1.265MHz)器件时,推荐使用低 ESR 的输入/输出陶瓷电容和适配的磁性元件,以保证纹波与瞬态响应。
  • 布局要点:尽量缩短开关回路路径(开关管、二极/电感、电容)以降低 EMI;接地采用单点或星形处理。
  • 散热与可靠性:在高负载或高温工况下检查封装温升,必要时扩展铜箔散热区。
  • 保护与兼容性:器件适合带有过流/过温等保护特性的系统设计,实际应用中请参考 TI 数据手册进行外围保护电路配置。

总体而言,LMR54406DBVR 以其宽输入、电压可调、高效率和小封装特点,适合对体积、效率与输入兼容性有较高要求的降压电源设计。请以官方数据手册为设计依据,完成最终元件选型与布局验证。

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