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FUXINSEMI 78L05
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- FUXINSEMI 78L05
- Type
- FUXINSEMI
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 1.7V@(40mA)
- Electronic Component
- FUXINSEMI
- Electronic Component
- 40uV
- Electronic Component
- 78L05
- Electronic Component
- 1
- Package
- SOT-89-3
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.138g
- Electronic Component
- 1
- Electronic Component
- BM0230032102
- Operating Temperature
- 40℃~+125℃@(Tj)
- Operating Voltage
- 30V
- Output
- Electronic Component
- Output Voltage
- 5V
- Output Current
- 100mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
78L05 — 固定5V 线性稳压器（FUXINSEMI）
一、产品概述
78L05 为 FUXINSEMI（富芯森美）出品的固定输出线性稳压器，输出电压 5V，最大输出电流 100mA，输入耐压最高可达 30V。器件采用 SOT-89-3 小封装，工作结温范围 -40℃ ~ +125℃，适用于空间受限且要求稳压精度与可靠性的低功耗电源场合。
二、主要电气特性
- 输出电压：5V（固定）
- 最大输出电流：100mA
- 静态电流（Iq）：3.8mA
- 压差（Dropout）：1.7V @ 40mA
- 电源纹波抑制比（PSRR）：49dB @ 120Hz
- 输出噪声：40µV（典型）
- 输入耐压：30V
- 输出极性：正极单通道
三、保护与可靠性
本器件集成短路保护、过流保护与热关断功能：当输出短路或过流时，限流电路保护器件及负载；当结温过高时，热关断动作以防止器件损坏，恢复正常后自动重启，提高系统安全性与可靠性。
四、封装与引脚
- 封装：SOT-89-3（小型三引脚，适合表面贴装）
- 典型引脚排列：输入（IN）、地（GND）、输出（OUT）
五、使用建议
- 输入/输出旁路电容：建议输入侧并联 0.1µF 陶瓷旁路；输出侧使用 1µF~10µF 低 ESR 电容以保证稳态与瞬态响应（具体值视负载动态而定）。
- 热设计：功耗 Pd ≈ (Vin − 5V) × Iout，SOT-89 散热能力有限，长时间大电流工作需增加 PCB 铜箔面积或热沉以降低结温。
- 应用场景：嵌入式单片机供电、传感器前端、车载及工业电源（输入电压高、瞬态要求中等的场合）。
六、小结
78L05 是一款面向体积受限应用的可靠固定输出 LDO，兼顾较宽的输入电压（最高 30V）、低噪声与良好纹波抑制，且具有完善的过流与热保护功能。通过合理的外部电容和 PCB 散热设计，可在多种低功耗与工业场合中稳定工作。若需更高输出电流或更低压差，可考虑改用封装与规格更高的系列产品。
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