WMSIC Electronic Components

LRC LMP21D5N3T5G

ModelLMP21D5N3T5G
PackageSOT-883
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 LMP21D5N3T5G
Type
LRC
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LRC
Electronic Component
LMP21D5N3T5G
Electronic Component
1
Package
SOT-883
Electronic Component
1 P
Electronic Component
MOSFET
Electronic Component
0.013g
Electronic Component
1
Electronic Component
BM0265132992
Operating Temperature
55℃~+150℃
Power Dissipation(Pd)
460mW
Electronic Component
Electronic Component
Electronic Component
10000
Voltage(Vdss)
20V
Capacitor(Ciss)
46.1pF

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

LMP21D5N3T5G P沟道MOSFET产品概述

一、产品基本定位

LMP21D5N3T5G是乐山无线电(LRC)推出的P沟道绝缘栅场效应晶体管(MOSFET),定位于低电压、小功率场景的开关与线性应用。产品采用SOT883超小型表面贴装封装,兼顾高密度集成与工业级可靠性,可满足消费电子、工业辅助电路等领域的多样化需求。

二、核心电气参数深度解析

该器件的关键参数围绕“低电压小功率”核心设计,各参数的实际应用意义如下:

1. 耐压与电流能力

  • 漏源电压(Vdss):20V:器件可承受的最大漏源极电压,适配3.3V/5V等低电压系统,避免过压击穿风险;
  • 连续漏极电流(Id):600mA:常温下可持续输出的最大漏极电流,满足LED、小型传感器等小功率负载的供电需求;
  • 脉冲电流能力:结合封装散热,短时间(ms级)可承受更高电流,适配瞬态负载场景(如电机启动瞬间)。

2. 通态与开关特性

  • 导通电阻(RDS(on)):670mΩ@5V, 100mA:栅源电压5V时的导通电阻,数值越低则通态损耗越小。该参数支撑小功率负载下的高效能量传输,避免发热过高;
  • 栅极电荷量(Qg):[email protected]:栅极充电至导通所需的电荷量,直接影响开关速度。适配4.5V低电压驱动,无需额外高压驱动电路;
  • 输入/反向传输电容(Ciss=46.1pF、Crss=4.9pF@10V):Ciss反映输入电容特性,Crss影响密勒效应,两者数值适中,兼顾开关速度与EMI控制,适合音频等噪声敏感场景。

3. 功耗与温度特性

  • 耗散功率(Pd):460mW:常温下允许的最大耗散功率,需结合PCB散热(如增加铜箔面积)避免过热;
  • 工作温度范围:-55℃~+150℃:覆盖工业级温度区间,可在户外设备、车载辅助电路等极端环境中稳定工作,无需额外温度补偿。

三、封装与品牌优势

1. SOT883封装特点

SOT883为超小型表面贴装封装(尺寸约2.3×1.3×1.0mm),具有三大优势:

  • 高密度集成:节省PCB空间,适配智能手环、蓝牙耳机等便携式设备的紧凑布局;
  • 散热高效:短引脚设计缩短热传导路径,结合合理PCB设计可满足小功率应用散热需求;
  • 易生产:引脚间距合理,便于自动化贴装,降低批量生产难度。

2. LRC品牌可靠性

乐山无线电(LRC)是国内老牌半导体厂商,产品经过多年市场验证:

  • 稳定的工艺一致性,批量生产良率高;
  • 完善的质量体系(ISO9001、IATF16949),适配工业级、汽车辅助级应用;
  • 本地化服务支持,便于技术咨询与样品获取。

四、典型应用场景

结合参数特性,LMP21D5N3T5G适用于以下场景:

1. 便携式设备电源管理

  • 负载开关:控制3.3V/5V电源路径,待机时切断负载供电,减少静态功耗;低导通电阻延长电池续航(如智能手表、无线耳机);
  • 电池保护:配合控制芯片实现过充/过放保护,适配小容量锂电池(纽扣电池、聚合物电池)。

2. 小功率DC-DC转换器

  • 同步整流:在5V转3.3V降压转换器中,替代传统肖特基二极管,通态损耗降低约2%-3%,提升转换效率。

3. 音频与传感器电路

  • 音频开关:控制耳机/扬声器信号路径,避免静态噪声;
  • 传感器供电:按需开启温度、湿度传感器供电,降低系统总功耗。

4. 工业辅助电路

  • 低温环境控制:在-55℃~+150℃下控制小型继电器、指示灯,适配户外监控、工业仪表等场景。

五、应用注意事项

  1. 栅极驱动:建议Vgs控制在-4.5V~-10V(P沟道特性),避免超过-20V(栅极氧化层击穿阈值);
  2. 散热优化:高温环境(150℃)下需将功耗降至100mW以下,可通过增加PCB铜箔、贴小型散热片实现;
  3. 静电防护:生产/测试需采用静电防护(接地工作台、离子风扇),避免栅极损坏。

LMP21D5N3T5G以“小体积、低损耗、宽温特性”为核心,是低电压小功率场景的高性价比选择,可有效简化电路设计并提升系统效率。

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