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LRC LP9435LT1G
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- LRC LP9435LT1G
- Type
- LRC
- Minimum package
- 3000
Technical parameters
- Electronic Component
- LRC
- Electronic Component
- LP9435LT1G
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- 1 P
- Type
- P
- Electronic Component
- MOSFET
- Electronic Component
- 0.032g
- Electronic Component
- 1
- Electronic Component
- BM0228680477
- Operating Temperature
- 55℃~+150℃
- Power Dissipation(Pd)
- 1.4W
- Electronic Component
- 3000
- Voltage(Vdss)
- 30V
- Capacitor(Ciss)
- 644pF
- Output Capacitor(Coss)
- 65pF
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LP9435LT1G 产品概述
一、产品简介
LP9435LT1G 是乐山无线电（LRC）推出的一款 P 沟道场效应管（MOSFET），封装为 SOT-23，适用于 30V 及以下电源域的高侧开关与电源路径管理。器件尺寸小巧、驱动电荷适中，适合空间受限的便携设备或电源控制模块。
二、主要规格（典型/最大）
- 类型：P 沟道 MOSFET（单片，1 个）
- 漏源耐压：Vdss = 30V
- 连续漏极电流：Id = 5.3A（封装与散热条件下）
- 导通电阻：RDS(on) = 100 mΩ @ Vgs = 4.5V（P 沟道，注意 Vgs 为负向驱动）
- 功耗耗散：Pd = 1.4W（SOT-23 封装热限制）
- 阈值电压：|Vgs(th)| ≈ 3V @ ID=250µA（典型）
- 总门电荷：Qg = 10 nC @ 10V（用于估算驱动能量）
- 输入电容：Ciss = 644 pF
- 输出电容：Coss = 65 pF
- 反向传输电容（米勒）：Crss = 51 pF
- 工作结温：Tj = -55℃ ~ +150℃
- 封装：SOT-23
三、性能特点与电气特性要点
- 低至 100 mΩ 的导通电阻在 4.5V 驱动下可提供较低的导通损耗，适合中等电流开关应用。
- 较高的阈值（约 3V）提示在靠近阈值电压驱动时导通不会很强，建议提供充分的负向 Vgs（例如 -4.5V）以确保低 RDS(on)。
- Qg 与 Ciss 较大，说明在需要频繁或高速开关时门极驱动能量与驱动器能力应被考虑；Crss 影响转换期间的米勒效应，可能限制开关速度。
- 封装热耗散 Pd=1.4W 表明在 SOT-23 封装下，长时间大电流工作受限于散热条件，实际可通过 PCB 铜箔、热垫扩散提高散热能力。
四、典型应用场景
- 移动设备与电池供电系统的高侧负载开关与电源路径控制（如电池选择、反向阻流保护）。
- 中低频率的开关电源前置或旁路开关（需关注开关损耗）。
- LED 驱动、背光控制、电源断路/软启动等需要正侧断开的场合。
- 节能型电源管理和负载选择电路。
五、使用建议与设计注意事项
- 作为 P 沟道器件，门极需向源方向施加负电压以导通，设计时应保证驱动电平符合器件要求并避免超过最大 Vgs（请参阅完整数据手册）。
- 对于大电流或连续导通场合，应优化 PCB 散热（加大铜箔、使用过孔热通道），以避免结温超限导致性能下降。
- 在开关应用中建议串联门极电阻以抑制振荡并降低 EMI；并考虑在门极或源端加上吸收/RC 网络以缓解米勒效应。
- 由于 Ciss/Crss 较大，高速驱动器应具备足够电流能力以保证切换速度和效率。
如需器件完整的绝对最大额定值、详细典型特性曲线及引脚定义，请参考 LP9435LT1G 的完整数据手册或联系我们获取原厂技术文档。
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