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UMW LD1117-1.5 LD1117
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- UMW LD1117-1.5
- Type
- UMW
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 1.3V@(1A)
- Electronic Component
- UMW
- Electronic Component
- 0.003%Vout
- Electronic Component
- LD1117-1.5
- Electronic Component
- 1
- Package
- SOT-223
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.25g
- Electronic Component
- 1
- Electronic Component
- BM0227708170
- Operating Temperature
- 40℃~+125℃
- Operating Voltage
- 18V
- Output
- Electronic Component
- Output Voltage
- 1.5V
- Output Current
- 1A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LD1117-1.5 产品概述
一、产品简介
LD1117-1.5 是友台半导体（UMW）推出的一款固定输出低压差线性稳压器（LDO），输出电压为 1.5V、输出电流最高 1A。器件设计用于在输入电压高达 18V 的工况下提供稳定、低噪声的正向电源，适合对电源纹波与噪声有严格要求的模拟与数字混合系统。
二、主要性能参数
- 输出类型：固定
- 最大工作电压：18V
- 输出电压：1.5V
- 输出电流：1A（最大）
- 压差（Dropout）：1.3V @ 1A
- 静态电流（Iq）：5mA
- 电源纹波抑制比（PSRR）：60dB @ 120Hz
- 输出噪声：0.003% × Vout（约 45µV @1.5V）
- 输出极性：正极，单通道
三、保护与可靠性
器件集成过流保护（OCP），在短路或过载条件下能限制输出电流，保护载入与芯片自身；工作温度范围宽（-40℃ 至 +125℃），适应工业级应用场景。
四、封装与热特性
常见封装为 SOT-223，便于中小功率散热与手工/波峰焊接。注意考虑器件的功耗与热阻：在高输入-输出压差且接近 1A 输出时，器件耗散功率显著，需配合铜箔散热或散热器确保结温低于额定值。
五、典型应用与使用建议
适用于通信设备、基准电源、模拟前端、低噪声数字电源等场合。基本外接建议：输入端配置适当旁路电容（例如 1µF~10µF 陶瓷 + 电解组合），输出端使用 10µF 低 ESR 电容以确保稳定性与瞬态响应。布局上尽量缩短输入/输出与地的回流路径，良好接地可提升 PSRR 与抑制干扰。
六、选型与设计注意事项
- 确认实际输入电压与压差：在 1A 工作点下需保证 Vin ≥ Vout + 1.3V。
- 考虑热耗散：P = (Vin − 1.5V) × Iout，计算最大功耗并设计合适散热。
- 输出噪声与 PSRR 表现良好，适合对噪声敏感的应用；但对极低压差或更高效率需求场合，可考虑降压转换器或更低压差 LDO。
以上为 LD1117-1.5 的产品概述，具体参数与典型曲线请以正式数据手册为准。
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