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KUU KAO3402
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- KUU KAO3402
- Type
- KUU
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- KUU
- Electronic Component
- KAO3402
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- 1 N
- Type
- N
- Electronic Component
- MOSFET
- Electronic Component
- 0.031g
- Electronic Component
- 1
- Electronic Component
- BM0265115738
- Power Dissipation(Pd)
- 1.4W
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- Voltage(Vdss)
- 30V
- Capacitor(Ciss)
- 390pF
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
KAO3402 产品概述
一、产品简介
KAO3402 是 KUU 推出的一款小型 SOT-23 封装 N 沟道场效应管，适用于便携式电源管理与低压开关应用。器件额定漏源耐压 30V，连续漏极电流 4A，结合小体积封装，可在空间受限的电路中实现高效功率开关。
二、主要参数
- 类型：N 沟道 MOSFET（SOT-23）
- 漏源电压 Vdss：30V
- 连续漏极电流 Id：4A
- 导通电阻 RDS(on)：110mΩ @ Vgs=2.5V
- 阈值电压 Vgs(th)：1.4V
- 总耗散功率 Pd：1.4W（环境条件与 PCB 散热有关）
- 栅极电荷 Qg：14nC @ Vgs=4.5V
- 输入电容 Ciss：390pF；输出电容 Coss：54.5pF；反向传输电容 Crss：41pF
- 封装：SOT-23，单片装
三、性能特点
- 低门驱要求：在 2.5V 门驱下即能达到 110mΩ 的导通电阻，适合 1.8V~5V 逻辑电平系统。
- 开关性能平衡：Qg 约 14nC，在中等频率开关应用（例如降压转换器、同步整流）中兼顾切换损耗与驱动需求。
- 体积优势：SOT-23 小封装便于高密度布局，适用于移动设备与嵌入式电源模块。
四、典型应用
- 低压负载开关、功率路径管理
- DC-DC 降压转换器（低电流侧开关或同步整流）
- LED 驱动与短路保护电路
- 电池保护、电源切换与分流控制
五、设计与使用建议
- 散热考虑：SOT-23 封装散热受限，实际 Pd 取决于 PCB 板铜面积与过孔。建议在器件底部与相邻走线处做大面积铜箔并辅以过孔导热。
- 栅极驱动：若追求更低 RDS(on) 或更快开关，可使用 4.5V 以上的栅极驱动，但须遵循器件绝对最大额定值（详见原厂数据手册）。
- 抑制振铃与 EMI：栅极串联小电阻并在源-地之间并联适当去耦电容，有助于抑制开关瞬态与减少 EMI。
- 布局要点：将 MOSFET、功率电感与输入/输出电容尽量靠近，减小回路面积，降低寄生电感带来的开关损耗与振铃。
六、封装与可靠性提示
SOT-23 封装便于自动贴装与批量生产，但耐热与可靠性依赖焊盘设计与回流工艺。推荐按照厂商推荐的 PCB 封装与回流曲线进行制造，并在高温或高应力场景下验证可靠性指标。
总结：KAO3402 以其 30V 耐压、在 2.5V 门驱下的合理导通电阻及小体积封装，为便携电源管理与低压功率开关提供了一种成本与性能兼顾的解决方案。使用前请参阅完整数据手册以获取详细的极限参数与测试条件。
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