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GOODWORK 78L05
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- GOODWORK 78L05
- Type
- GOODWORK
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 1.7V@(40mA)
- Electronic Component
- GOODWORK
- Electronic Component
- 42uVrms
- Electronic Component
- 78L05
- Electronic Component
- 1
- Package
- SOT-89
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.15g
- Electronic Component
- 1
- Electronic Component
- BM0263571074
- Operating Temperature
- 40℃~+125℃
- 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 产品概述（GOODWORK 固得沃克）
一、产品简介
78L05 是一款固定输出的线性低压差稳压器（LDO），由 GOODWORK（固得沃克）生产，采用 SOT-89-3 封装。器件输入电压可达 30V，输出为正极 5V，最大输出电流 100mA，适用于对噪声和纹波有一定抑制要求的低功耗电源模块和便携设备。
二、主要电气参数
- 输入电压（工作电压）：最高 30V
- 输出电压：固定 5V
- 输出电流：最大 100mA
- 压差（Dropout）：1.7V @ 40mA（在更高电流下压差可能增大，应留足裕量）
- 电源纹波抑制比（PSRR）：49dB @ 120Hz
- 输出噪声：42 μVrms
- 工作温度范围：-40℃ ~ +125℃
- 输出极性：正极，单通道固定输出
- 保护功能：过流保护、热关断
三、功能特性与优势
- 良好的纹波抑制能力（49dB @ 120Hz），可减小整流后电源纹波对后级电路的影响。
- 低噪声设计（42 μVrms）适合对模拟或ADC电路供电需求。
- 内置过流保护与热关断，提高系统可靠性，防止短路或热应力损坏器件。
- SOT-89 封装体积小、适合空间受限的 PCB 设计且便于手工和波峰/回流焊接工艺。
四、设计与布局建议
- 稳压器需外接输入与输出旁路电容以保证稳定性与瞬态响应，常见配置为输入侧 0.1 μF 陶瓷电容与输出侧 1 μF~10 μF 低 ESR 电容（根据具体电路验证选择）。
- 注意留足输入电压裕量：由于压差为 1.7V（@40mA），在 100mA 输出时压差会更高，建议 Vin ≥ Vout + 2.0~3.0V 以保证稳定输出。
- 热设计：功耗 Pd = (Vin − Vout) × Iout。举例 Vin=12V、Vout=5V、Iout=100mA 时，Pd=0.7W，应在 PCB 设计中通过铜箔散热和合理布局降低结壳温升，避免触发热关断。
五、典型应用场景
- 小型电池供电设备与便携式仪表
- 传感器电源、ADC/DAC 参考电源（对噪声有一定要求）
- 工业控制与通信终端的辅助电源
- 任何要求固定 5V、低功耗且对成本/封装有要求的电源方案
六、封装与采购信息
- 封装：SOT-89-3，适用于空间受限的表面贴装方案。
- 品牌：GOODWORK（固得沃克）。采购与替代时可参考相同规格的通用 78L05 系列，但注意比较压差、PSRR、噪声与保护特性。
如需器件数据手册（引脚定义、典型特性曲线、外部元件建议和起始客户案例），可向 GOODWORK 供应渠道索取完整规格书以完成设计验证。
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