WMSIC Electronic Components

HGSEMI LMC555MM/TR LMC555MM

ModelLMC555MM/TR
PackageMSOP-8
BrandHGSEMI
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
HGSEMI LMC555MM / TR
Type
HGSEMI
Minimum package
3000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
LMC555MM/TR
Electronic Component
1
Package
MSOP-8
Electronic Component
555 Timer
Electronic Component
0.15g
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0227708183
Electronic Component
1
Operating Temperature
40℃~+85℃
Operating Voltage
4.5V~15V
Operating Current
30uA
Electronic Component
Electronic Component
Electronic Component
3000

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

LMC555MM/TR 产品概述

一、产品简介

LMC555MM/TR 是华冠(HGSEMI)推出的一款低功耗单通道定时器/振荡器,基于改进的 CMOS 结构实现传统 555 功能,适合对功耗和体积有严格要求的计时、触发与振荡应用。器件工作电压范围宽(4.5V~15V),待机工作电流仅 30μA,工作温度覆盖工业级 -40℃~+85℃,封装为 MSOP-8,利于小型化系统集成。

二、主要特性

  • 单路定时器,兼具单稳和多稳(占空比可调振荡)模式功能
  • 低工作电流:典型 30μA,适合电池供电与能源受限系统
  • 宽电源电压:4.5V~15V,兼容常见逻辑电源
  • 工业温度等级:-40℃~+85℃,可靠性高
  • CMOS 结构,输出摆幅靠近电源轨,逻辑接口友好
  • 封装:MSOP-8,节省 PCB 面积,便于表面贴装工艺

三、典型应用场景

  • 精确时钟与延时发生器(定时触发、延时上电等)
  • 可调占空比振荡器:脉宽调制、方波源、调光/调速控制
  • 低功耗唤醒电路与计时器(便携设备、遥控器、传感节能节点)
  • 时序控制、脉冲整形与频率合成前端

四、典型电路与设计要点

  • 多谐(自激)振荡:常用公式 f ≈ 1.44/((RA + 2RB)·C),占空比 D ≈ (RA + RB)/(RA + 2RB)。通过调整 RA、RB、C 实现所需频率与占空比。
  • 单稳(单触发)模式:触发后由外接电阻、电容决定脉宽,可实现精确延时。
  • 设计要点:电源端加 0.1μF~1μF 去耦电容;选择低漏电、低温漂的定时电容以保证稳定性;避免输出过载驱动大电流负载,必要时加缓冲器或驱动级。
  • 输入/阈值处理:保持触发与阈值端不悬空,采用适当的上拉/下拉电阻以防误触发。
  • 低功耗策略:在电池供电应用中利用占空比控制与待机策略降低平均功耗。

五、封装与可靠性

LMC555MM/TR 提供 MSOP-8 小型封装,适用于自动贴装生产,散热与可靠性满足工业温度等级要求。封装利于在空间受限的电路板上部署,同时便于焊接与机械固定。

六、订购信息与使用注意事项

  • 品牌:HGSEMI(华冠),型号:LMC555MM/TR,封装:MSOP-8。
  • 选型时注意电源电压与外接定时元件的额定范围,关注环境温度和输出负载能力,必要时参照器件详细数据手册进行热性能和电气极限验证。

LMC555MM/TR 以其低功耗、宽电压与工业级温度特性,为需要小体积、稳态低耗计时和可调占空比振荡的设计提供了一种可靠且经济的解决方案。

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