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GOODWORK AMS1117-3.3 AMS1117
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- GOODWORK AMS1117-3.3
- Type
- GOODWORK
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 1.3V@(1A)
- Electronic Component
- GOODWORK
- Electronic Component
- AMS1117-3.3
- Electronic Component
- 1
- Package
- SOT-223
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.266g
- Electronic Component
- 1
- Features
- Electronic Component
- Electronic Component
- BM0227247585
- Operating Temperature
- 40℃~+125℃@(Tj)
- Operating Voltage
- 18V
- Output
- Electronic Component
- Output Voltage
- 3.3V
- Output Current
- 1A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
AMS1117-3.3（GOODWORK 固得沃克）产品概述
一、产品简介
AMS1117-3.3 是一款固定输出为 3.3V 的线性低压差稳压器（LDO），由 GOODWORK（固得沃克）提供 SOT-223 封装版本。器件支持最大 1A 输出电流，具有过热保护功能，适用于对噪声、纹波有较高要求且电压差不大、散热条件可控的低压电源场合。
二、主要电气特性
- 输出电压：3.3V（固定）
- 最大输出电流：1A
- 静态电流（Iq）：约 3mA
- 压差（Dropout）：1.3V @ 1A（即 Vin 最低需 ≈ 4.6V 才能保证 3.3V 输出）
- 电源纹波抑制比（PSRR）：70dB @ 120Hz
- 过热保护：内置热关断与限流保护，提高系统可靠性
- 工作电压：最高 18V（器件允许的输入电压上限，应参考具体数据手册）
- 输出极性：正极输出
- 工作结温：-40℃ ~ +125℃（Tj）
三、封装与引脚
- 封装：SOT-223，常见于中小功率板载降压方案
- 封装特点：体积小、焊接方便，但散热能力受限；高功率时需配合 PCB 大面积铜箔或外部散热片
四、典型应用
- 单片机、传感器、射频模块和通信模块的 3.3V 电源
- 工业控制板、嵌入式设备的本地稳压电源
- 对噪声敏感的模拟前端供电（得益于较高 PSRR）
五、设计与使用建议
- 输入电压应大于 Vout + 压差（建议预留裕量），避免在高 Vin、高 I 时造成过大功耗。线性器件的耗散 P = (Vin - Vout) × I，应确保 PCB 散热能承受。
- 输出旁路电容与输入电容为保证稳压器稳定和抑制瞬态响应所必需，常用 10µF 低 ESR（钽电容或优质电解）并靠近引脚放置；并在输入端加 0.1µF 陶瓷以滤高频噪声。
- 为保护器件与系统，可在输入侧增加熔断器或限流元件、在输入反向时加入保护二极管。
- 若系统需要长期高电流且输入电压远高于 3.3V，建议改用开关降压（DC-DC）以降低热耗并提高效率。
六、热管理与布局要点
- SOT-223 散热依赖 PCB 铜箔面积，建议在器件底部与散热引脚处扩展多层大面积铜箔并接地或散热层。
- 放置位置尽量避开热敏感元件，关键走线短且粗以减小压降，输入/输出电容尽量靠近引脚焊盘。
七、规格摘要（便于快速检索）
- 型号：AMS1117-3.3（GOODWORK）
- 输出：固定 3.3V，1A；正极
- 压差：1.3V @ 1A
- 静态电流：3mA
- PSRR：70dB @ 120Hz
- 保护：过热保护（热关断）
- 工作温度：-40℃ ~ +125℃（Tj）
- 封装：SOT-223
- 工作电压上限：18V
总结：GOODWORK 的 AMS1117-3.3 在体积、成本与噪声抑制上具有优势，适合中低功率、对纹波要求高且散热可控的 3.3V 应用场景；在高输入电压或高功率需求时需注意散热与功耗，或考虑切换到开关型电源方案。
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