WMSIC Electronic Components

LRC LR6205B28M

ModelLR6205B28M
PackageSOT-23-5
BrandLRC
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
LRC LR6205B28M
Type
LRC
Minimum package
3000 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
160mV@(150mA)
Electronic Component
LRC
Electronic Component
40uVrms
Electronic Component
LR6205B28M
Electronic Component
1
Package
SOT-23-5
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.066g
Electronic Component
1
Electronic Component
BM0265148199
Operating Temperature
40℃~+85℃@(Ta)
Operating Voltage
6V
Output
Electronic Component
Output Voltage
2.8V
Output Current
500mA

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

LR6205B28M 低压差线性稳压器(LDO)产品概述

LR6205B28M是乐山无线电(LRC)推出的固定输出型低压差线性稳压器,专为低噪声、低功耗、宽温适应性场景设计,核心输出电压2.8V,持续输出电流500mA,适配电池供电、射频前端、工业传感器等多类应用需求。

一、核心电气参数概览

LR6205B28M的关键参数围绕“低噪声、低功耗、高稳定性”设计,核心指标如下:

  • 输出特性:固定2.8V输出(无需外部电阻调整),持续输出电流500mA,输出极性为正极;
  • 电源性能:典型工作电压6V,最小输入电压可低至~3.0V(结合160mV@150mA压差),电源纹波抑制比(PSRR)达80dB@217Hz(射频常见干扰频率);
  • 功耗与噪声:典型静态电流(Iq)50uA(轻载时节能显著),宽带噪声40uVrms(0.1-10Hz频段);
  • 保护与控制:内置短路保护、过流保护,配备使能(EN)引脚(便于系统级电源管理);
  • 环境适应性:工作温度范围-40℃~+85℃(环境温度Ta),符合工业级应用要求。

二、关键性能特性解析

1. 低噪声+高PSRR,适配敏感电路

针对217Hz(GSM、蓝牙等射频系统的突发时钟频率)的80dB PSRR,可有效抑制电源纹波对射频收发器、传感器信号链的干扰;40uVrms的低噪声(0.1-10Hz)则能保证模拟电路(如心率传感器、压力传感器)的信号精度,避免噪声引入测量误差。

2. 低静态电流+低压差,优化电池供电

50uA的典型静态电流(仅为普通LDO的1/5~1/10),在轻载或待机状态下可显著延长电池续航;160mV@150mA的低压差特性,让输入电压接近输出时仍能稳定工作(如单节锂电池3.7V放电至2.9V时,仍可输出稳定2.8V)。

3. 完善保护+使能控制,提升系统可靠性

  • 短路保护:输出短路时自动关断,避免器件过热损坏;
  • 过流保护:限制最大输出电流,防止负载过载烧毁;
  • 使能引脚:高电平激活输出,低电平关断(关断时静态电流进一步降低),便于MCU对电源进行分时管理(如休眠时关断非必要LDO)。

三、典型应用场景

LR6205B28M的性能特性使其适配多类场景:

  • 物联网(IoT)节点:电池供电的智能门锁、环境监测节点,低Iq延长待机时间,稳定2.8V适配低功耗MCU(如STM32L0系列);
  • 可穿戴设备:智能手环、手表,低噪声适配心率、加速度传感器的模拟信号,小型封装节省空间;
  • 射频前端:蓝牙模块、WiFi模块的电源,80dB PSRR抑制217Hz纹波,避免射频干扰;
  • 工业传感器:温度、压力传感器的信号调理电路,-40~+85℃宽温适应车间、户外环境;
  • 便携式医疗设备:血糖监测仪、血氧仪,稳定输出保证测量精度,保护功能提升设备可靠性。

四、封装与可靠性设计

  • 封装:采用SOT-23-5超小型封装,尺寸仅约2.9×1.6×1.1mm,适合便携设备的高密度PCB布局;
  • 可靠性:LRC工业级工艺制造,符合RoHS环保标准,焊接可靠性高,宽温范围覆盖户外、车载等 harsh 环境,长期工作稳定性优异。

五、典型应用电路说明

LR6205B28M的应用电路简单,无需外部复杂元件:

  1. 输入侧:电源(如6V直流或3.7V锂电池)接VIN引脚,并联0.1uF陶瓷电容到GND(去耦高频噪声);
  2. 输出侧:VOUT引脚接2.8V负载,并联1uF陶瓷电容到GND(滤波低频纹波);
  3. 控制侧:EN引脚接MCU的GPIO(高电平激活,低电平关断);
  4. 接地:GND引脚可靠接地,减少噪声耦合。

内置保护机制无需额外添加短路/过流保护电路,进一步简化设计。

LR6205B28M凭借低噪声、低功耗、宽温适应性及完善的保护功能,成为电池供电设备、射频电路、工业传感器等场景的优选LDO方案。

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