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Hottech IRLML6344
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Hottech IRLML6344
- Type
- HOTTECH
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HOTTECH
- Electronic Component
- IRLML6344
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- 1 N
- Electronic Component
- MOSFET
- Electronic Component
- 0.033g
- Electronic Component
- 1
- Electronic Component
- BM0227655764
- Operating Temperature
- 55℃~+150℃
- Power Dissipation(Pd)
- 1.3W
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- Voltage(Vdss)
- 30V
- Capacitor(Ciss)
- 650pF
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
IRLML6344 产品概述
一、产品简介
IRLML6344（Hottech / 合科泰 生态系列）是一款低电压逻辑级N沟道功率场效应管，额定漏源电压30V，连续漏极电流5A，适用于对导通电阻和开关损耗有一定要求的小功率高速开关场合。器件采用SOT-23封装，体积小、适合贴片工艺，便于在空间受限的板级电源与控制电路中使用。
二、主要参数
- 漏源电压 Vdss：30V
- 连续漏极电流 Id：5A
- 导通电阻 RDS(on)：29mΩ @ Vgs=4.5V, Id=5A
- 功耗 Pd：1.3W（封装热限，实际应用需按PCB散热考量）
- 阈值电压 Vgs(th)：1.1V
- 总栅极电荷 Qg：6.8nC @ Vgs=4.5V
- 输入电容 Ciss：650pF @ 25V
- 反向传输电容 Crss：46pF @ 15V
- 工作温度范围：-55℃ ~ +150℃
- 封装：SOT-23
- 数量：1个N沟道
三、器件特性与优势
- 低导通电阻：在4.5V栅压下RDS(on)仅29mΩ，有利于降低导通损耗，提高效率，适合低压大电流开关。
- 逻辑级门槛：Vgs(th)≈1.1V，能在较低门限电压下导通，便于与单片机及逻辑电平直接驱动（建议驱动电压≥4.5V以达到标称RDS(on)）。
- 开关性能平衡：Qg=6.8nC、Ciss=650pF，兼顾开关速度与驱动能耗，适合中低频PWM应用。
- 小型化封装：SOT-23占板面积小，便于移动设备和密集布局的应用。
四、典型应用场景
- 负载开关与电源管理：电机驱动小负载、继电器驱动、灯驱动、负载断开保护。
- DC-DC转换器：同步整流或降压开关场合（注意热管理与开关损耗）。
- 电池保护与便携设备：电源路径选择、热敏断开与低压保护。
- 一般开关控制电路：可被微控制器直接驱动，对成本和面积敏感的消费类电子。
五、应用注意事项
- 热耗散限制：Pd=1.3W为SOT-23封装下的额定耗散，实际应用中需结合PCB铜箔面积与环境温度做热仿真和降额设计，高电流长时间导通时应扩展铜箔或改用更大封装。
- 驱动电压与损耗：为达到标称29mΩ，推荐Vgs=4.5V；若仅用3.3V驱动，RDS(on)会上升，导通损耗增加。
- 开关过渡能量：Qg和Ciss决定了栅驱动能量和开关速度，较大的Qg在高速开关时会增加驱动损耗，建议使用合适的栅阻或驱动器匹配。
- 感性负载保护：驱动感性负载时应加续流二极管或RC缓冲以吸收反向电压，防止Crss引起的毛刺。
六、封装与热管理建议
- 在SOT-23封装下，建议在PCB上设计足够的散热铜箔，增加GND散热岛并采用多层板连接，提升热阻到环境的传导能力。
- 对于连续大电流应用，考虑使用较大封装（如SOP、DFN等）或并联多个器件以分散热量。
七、选型建议
选型时应综合考虑最大工作电压、持续电流、RDS(on)在目标驱动电压下的表现、开关频率带来的开关损耗以及封装热能力。IRLML6344适合需要小体积、逻辑驱动且在4.5V附近工作以获得低导通损耗的场合；若系统工作在更高功率或更高频率，应优先考虑热性能更好或RDS(on)更低的大封装器件。
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