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HGSEMI LM1117S-5.0/TR LM1117S
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HGSEMI LM1117S-5.0 / TR
- Type
- TO-263
- Minimum package
- 500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 1.25V@(1A)
- Electronic Component
- HGSEMI
- Electronic Component
- 0.003%Vout
- Electronic Component
- LM1117S-5.0/TR
- Electronic Component
- 1
- Package
- TO-263
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 2.458g
- Electronic Component
- 1
- Electronic Component
- BM0227285448
- Operating Temperature
- 40℃~+125℃@(Tj)
- Operating Voltage
- 15V
- Output
- Electronic Component
- Output Voltage
- 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.
LM1117S-5.0/TR 产品概述
一、概述
LM1117S-5.0/TR 为华冠（HGSEMI）提供的固定输出线性稳压器，输出为正5.0V、最大输出电流1A，适用于需要稳压、低噪声电源的各类电子设备。器件采用TO-263功率封装，集成过流保护与过热保护，适合中功率的商业与工业应用。
二、主要参数亮点
- 输出类型：固定（5.0V）
- 最大工作电压：15V（输入端）
- 最大输出电流：1A
- 压差（Dropout）：1.25V @ 1A（注意满载下输入电压需≥6.25V）
- 静态电流（Iq）：约10mA
- 电源纹波抑制比（PSRR）：75dB @ 120Hz（高抑制比，利于抑制电网纹波）
- 噪声：0.003% Vout（约150µV rms 量级）
- 保护功能：过流保护（OCP）、过热关断（Thermal Shutdown）
- 工作温度：-40℃ ~ +125℃（结温Tj）
- 输出极性：正极，单路输出
- 封装：TO-263（适合散热要求较高的应用）
三、典型应用场景
- 嵌入式系统的5V供电稳压
- 模拟前端、AD/DA供电（对低噪声要求较高的场合）
- 单板计算器、电源后级、接口电源
- 工业控制、通信设备与消费电子中对1A级稳压需求的模块
四、使用建议与注意事项
- 输入电压裕量：因压差约1.25V，满载1A时输入电压应至少为5V+1.25V≈6.25V；为保证稳定与容差，应预留更高裕量（例如7～15V范围内）。最大允许工作电压以器件规格书为准（此处标注15V）。
- 输出/输入电容：LM1117系列对输出电容稳定性敏感，建议在输出端并联低ESR的电容（如10µF 钽电或低ESR电解），并在输入端放置适当去耦电容（0.1µF 陶瓷 + 10µF 电解）以保证瞬态响应与稳定性。
- 散热与布局：TO-263封装热性能良好，但在1A输出及高差压时功耗显著（Pd = (Vin - 5V) × Iout）。PCB应考虑散热铜箔、热沉或通过孔散热，避免结温超过125℃。
- 保护行为：器件具过流与过热保护，会在异常情况下进入限流或关断，恢复工作需在热量散去或异常解除后自动恢复。
五、小结
LM1117S-5.0/TR 是一款适用于需要稳定5V、低噪声且具备保护功能的线性稳压器，封装为TO-263 便于散热处理。其高PSRR 与低噪声特性使其在模拟与数字混合电路中表现优良。设计时需注意输入电压裕量、输出电容选型与散热设计，以确保长期可靠运行。若需更详细的电气性能曲线、热阻或典型应用电路，请参考厂商完整规格书（Datasheet）。
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