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GOODWORK AMS1117-5.0 AMS1117
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- GOODWORK AMS1117-5.0
- Type
- GOODWORK
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- GOODWORK
- Electronic Component
- 0.003%Vout
- Electronic Component
- AMS1117-5.0
- Electronic Component
- 1
- Package
- SOT-223
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.148g
- Electronic Component
- 1
- Features
- Electronic Component
- Electronic Component
- BM0230812396
- Operating Temperature
- 40℃~+125℃@(Tj)
- Operating Voltage
- 18V
- 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.
AMS1117-5.0 产品概述
一、产品简介
AMS1117-5.0 是一款固定输出的线性低压差稳压器，品牌：GOODWORK（固得沃克），封装为 SOT-223。该器件提供稳定的 +5V 输出，适用于需要中等电流且对纹波、噪声有一定抑制要求的电源模块。结构简单、使用方便，常作为板载 5V 电源的首选方案之一。
二、主要参数
- 输出类型：固定（5.0V）
- 最大工作电压（输入）：18V
- 输出电流：1A（最大）
- 压差（Dropout）：1.3V @ 1A
- 静态电流（Iq）：3mA
- 电源纹波抑制比（PSRR）：70dB @ 120Hz
- 输出噪声：0.003% Vout
- 保护特性：过热保护（Thermal shutdown）
- 工作温度范围：-40℃ ~ +125℃（Tj）
- 输出极性：正极
- 输出通道：单通道
- 封装：SOT-223
三、性能亮点
- 低压差：1.3V 的压差在 1A 工作点下保证输出稳定，使得在较低输入电压条件下仍能维持 5V 输出（建议输入电压应 ≥ Vout + 压差，即 ≥约 6.3V）。
- 高 PSRR：在 120Hz 时达到 70dB，对来自整流/开关电源的交流纹波有良好抑制能力，有助于减小系统干扰。
- 低噪声与低静态电流：噪声仅为输出的 0.003% 且静态电流仅 3mA，适合对信号完整性有要求的应用且待机损耗较低。
- 完善保护：内置过热保护，配合合理的散热设计能提高系统可靠性。
四、典型应用场景
- 单板计算机与嵌入式控制板的 5V 供电
- 工业控制模块、传感器供电
- 通信设备与外设电源（如 USB 供电前端）
- 一般消费类电子和仪器仪表的稳压模块
五、使用建议与注意事项
- 输入电压应满足最低压差余量（建议 ≥6.3V），且不超过产品标称的 18V 最大工作电压。
- 在高电流工况下，器件功耗 P = (Vin − Vout) × I 会显著增加，应做好散热设计（SOT-223 需利用 PCB 大面积铜箔或外接散热片）。
- 输入与输出端推荐并联低 ESR 电容（例如 10µF 级）以保证稳定性并降低瞬态响应与噪声。
- 高温环境下应适当降额使用，避免因热关断影响系统稳定性。
- 布局时尽量缩短输入/输出走线并靠近器件放置去耦电容，减小寄生阻抗与干扰耦合。
六、封装与焊接提示
SOT-223 封装方便手工焊接与波峰/回流焊，底部与散热引脚需与 PCB 热铜区良好接触以提升散热能力。常见做法为在焊盘下方及背面预留大面积铜箔并通过过孔与背面铜层连接。
总结：GOODWORK（固得沃克）AMS1117-5.0 在中等功率、对纹波抑制和噪声有要求的应用中表现平衡，设计时重点考虑输入电压裕度与散热管理即可获得可靠的 5V 输出。
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