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UMW AO4459
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- UMW AO4459
- Type
- UMW
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- UMW
- Electronic Component
- AO4459
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- 1 P
- Electronic Component
- MOSFET
- Electronic Component
- 0.19g
- Electronic Component
- 1
- Electronic Component
- BM0227324872
- Operating Temperature
- 55℃~+150℃
- Power Dissipation(Pd)
- 3.1W
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- Voltage(Vdss)
- 30V
- Capacitor(Ciss)
- 520pF
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
AO4459 产品概述
一、产品简介
AO4459 是友台半导体（UMW）出品的表面贴装型 P 沟道 MOSFET，额定漏源电压 Vdss 为 30V，连续漏极电流 Id 为 6.5A（Ta），在 Ta 条件下耗散功率 Pd 为 3.1W。器件采用 SOP-8 封装，适合中等功率、高侧开关与反向保护场合。
二、主要电气参数
- 漏源电压 Vdss：30V
- 连续漏极电流 Id：6.5A（Ta）
- 导通电阻 RDS(on)：33mΩ @ VGS = 10V（标称）
- 阈值电压 Vgs(th)：约 1.5V（以绝对值计，P 沟道器件在负向栅压下导通，测试电流 250µA）
- 总栅电荷 Qg：9.2nC @ 10V
- 输入电容 Ciss：520pF；反向传输电容 Crss：65pF；输出电容 Coss：100pF
- 工作温度：-55℃ 至 +150℃
三、特性解读与设计要点
- 导通特性：33mΩ 的 RDS(on)（在 VGS = 10V 下）表明器件在充分栅压驱动时损耗较低，适用于功率损耗敏感的高侧负载切换。
- 栅极驱动：标称 RDS(on) 在 |VGS| = 10V 条件下测得。对于 P 沟道器件，需对栅极施加相对于源极的负向电压（约 -10V）以达到该导通电阻，设计时须确认驱动电平与电源轨关系。
- 开关损耗：Qg = 9.2nC 和 Crss = 65pF 表明在高频切换时栅极驱动损耗与米勒效应不可忽视，驱动器能力与开关速率需要配合选择。
- 热管理：SOP-8 封装下 Pd = 3.1W（Ta），需在 PCB 设计中预留充足焊盘铜箔和散热通孔以维持温升在安全范围。
四、典型应用场景
- 电池供电设备的高侧开关与负载断开
- 便携式设备的反向电流防护与极性保护
- 电源管理电路中的软启动与电源选择（power path）
- 低至中等功率的开关与保护电路
五、使用与注意事项
- 切勿超过 Vds = 30V 的最大额定值，注意瞬态尖峰。
- 避免栅源过压/反向应力，必要时加上栅极保护器件（TVS 或限流电阻）。
- 在高频切换场合，考虑增加门极电阻以抑制振铃并降低 EMI。
- 采用适当的 PCB 散热设计（加大铜箔面积、布置热孔）以优化 Pd 使用条件。
- 注意静电防护，器件对静电敏感。
六、总结
AO4459 以 30V 额定、电流能力 6.5A、较低的 RDS(on) 和 SOP-8 小型封装，为高侧开关、反向保护与电源管理方案提供了体积小、性能平衡的解决方案。针对具体系统，请参考完整数据手册并根据实际工况进行热与驱动设计优化。若需更详细的浪涌、动态特性与布局建议，建议向厂家索取完整规格书。
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