WMSIC Electronic Components

LRC LP2307LT1G

ModelLP2307LT1G
PackageSOT-23(SOT-23-3)
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LRC LP2307LT1G
Type
LRC
Minimum package
3000

Technical parameters

Electronic Component
LRC
Electronic Component
LP2307LT1G
Electronic Component
1
Package
SOT-23(SOT-23-3)
Electronic Component
1 P
Type
P
Electronic Component
MOSFET
Electronic Component
0.031g
Electronic Component
1
Electronic Component
BM0257569737
Operating Temperature
55℃~+150℃
Power Dissipation(Pd)
1.1W
Electronic Component
3000
Voltage(Vdss)
16V
Capacitor(Ciss)
1.58nF
Resistor(RDS(on))
110mΩ@2.5V

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

LP2307LT1G 产品概述

LP2307LT1G 是乐山无线电(LRC)出品的一款低压小封装 P 沟道场效应管(P-channel MOSFET),采用 SOT-23 三引脚封装,适合便携设备与系统中的高端开关、反向保护与电源分配等场合。该器件以低门压导通、体积小、易于 PCB 布局为特点,适合对尺寸与成本有要求的中低功率电路设计。

一、主要参数摘要

  • 型号:LP2307LT1G(LRC)
  • 类型:P 沟道 MOSFET(单管)
  • 封装:SOT-23(SOT-23-3)
  • 漏源耐压 Vdss:16 V
  • 连续漏极电流 Id:4.7 A(器件极限参数,实际工作受封装散热限制)
  • 导通电阻 RDS(on):110 mΩ @ VGS = -2.5 V, ID = 1 A
  • 耗散功率 Pd:1.1 W(在参考环境与 PCB 散热条件下的额定耗散)
  • 阈值电压 VGS(th):1.4 V @ IG S = 250 μA(门限为参考值,实际需要更大 VGS 得到低 RDS(on))
  • 输入电容 Ciss:1.58 nF(影响开关速度与栅极驱动能力)
  • 工作温度范围:-55 ℃ ~ +150 ℃

二、功能特性与优势

  • 低电压逻辑级驱动:在 VGS = -2.5 V 时 RDS(on) 仅约 110 mΩ,适合较低门压场合,便于 MCU 或低压逻辑直接控制(注意极性与门电压幅值)。
  • 小型封装:SOT-23 外形利于节省 PCB 面积、适合便携式与体积受限的电路。
  • 适用广泛的中低功率场景:16 V 耐压与接近 5 A 的标称电流覆盖多数单节电池与 5 V/12 V 低压系统的高端开关需求。
  • 中等栅极电容,兼顾开关损耗与驱动要求:Ciss = 1.58 nF,驱动电流要求适中。

三、典型应用场景

  • 高端负载开关(电源侧开关):用于电源分配中的高端开关,尤其是需要在电源侧断开负载的场合。
  • 反向电池保护:可用于单节/多节电池系统的反接保护或简单的理想二极管替代方案(需配合合适的控制)。
  • 电源切换与电压选择:在需要切换电源源头或实现软启动/软关断的电路中。
  • 便携式电子、消费类电子、通讯设备、电源管理模块等。

四、设计与使用建议

  • 门级驱动:P 沟道 MOSFET 在高端开关应用中通常将源接电源正端,施加低于源的门电压以导通(例如把门拉到地),关闭时将门拉回接近源电位。RDS(on) 标定在 VGS = -2.5 V(即门相对源为 -2.5 V)下,请按该极性理解驱动要求。
  • 注意门极电压幅值:在实际设计中应参考器件完整数据手册的最大允许 VGS(极限值)并避免超过,以免损坏器件。
  • 栅极串联电阻:为抑制振铃与减小瞬态电流,推荐在门极串联 10~100 Ω 的电阻,尤其是驱动器输出能力较强或负载含感性成分时。
  • 开关损耗与热管理:器件功耗主要为 Pd = I^2·RDS(on)。按额定 Pd = 1.1 W 与 RDS(on) = 0.11 Ω 估算,理论上在满导通情况下的稳态电流上限约为 sqrt(Pd / RDS(on)) ≈ 3.16 A(计算值仅用于参考,实际允许电流受 PCB 散热与环境温度影响)。SOT-23 封装散热能力有限,应通过加大铜箔、使用多层铜平面与热过孔来改善散热。
  • 布局建议:将 MOSFET 的热流通道设计为尽量大的铜面积,缩短高电流走线,降低寄生电感;负载与电源走线要宽短,旁路电容靠近器件放置。
  • 开关瞬态与钳位:对感性负载或输入有高频尖峰时,宜加 TVS 或 RC 吸收网络保护,以防瞬态超出器件极限。

五、可靠性与封装说明

  • SOT-23 封装适合表贴自动化组装,便于大批量生产。引脚排列与封装尺寸请以原厂(LRC)完整数据手册为准。
  • 工作温度范围宽(-55 ~ +150 ℃),适合多数工业与消费类应用;长时间在高温下工作需要考虑 RDS(on) 的温漂及热失效风险。

六、选型与注意事项

  • 在选型时,若系统电流接近或超过几安培,必须评估 PCB 散热是否能满足器件 Pd 要求。对于持续大电流应用,考虑更大功率封装的 P 沟道 MOSFET。
  • 若需要更低的导通电阻或更高的电流能力,可在同类产品中比较 RDS(on)、Vdss 与封装散热规范,或采用 N 沟道 + 驱动器的方案(针对不同拓扑需求)。
  • 最终设计前,请参阅 LP2307LT1G 的完整数据手册以获取详细电气特性、绝对最大额定值、典型特性曲线与封装引脚图。

总结:LP2307LT1G 是一款面向低压高端开关场合的 SOT-23 P 沟道 MOSFET,具有逻辑级门压驱动、适合便携与空间受限应用的优势。在实际使用中应重视门极驱动极性、热设计与瞬态保护,以确保稳定可靠的工作。

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