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UTC UR133AG-33-AB3-B-R UR133AG
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- UTC UR133AG-33-AB3-B-R
- Type
- UTC
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 1.3V@(500mA)
- Electronic Component
- UTC
- Electronic Component
- UR133AG-33-AB3-B-R
- Electronic Component
- 1
- Package
- SOT-89
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.144g
- Electronic Component
- 1
- Electronic Component
- BM0226338208
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 12V
- Output
- Electronic Component
- Output Voltage
- 3.3V
- Output Current
- 500mA
- Output Type
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
UR133AG-33-AB3-B-R 产品概述
一、产品简介
UR133AG-33-AB3-B-R 是 UTC（友顺）推出的一款固定输出线性低压差稳压器（LDO），输出电压为 3.3V，面向要求简单、稳定电源的嵌入式与工业应用。该器件为单通道、正极输出，采用 SOT-89 小封装，适合空间受限的电路板设计。
二、主要参数与特性
- 输出电压：3.3V（固定）
- 最大输出电流：500mA
- 压差（Dropout）：1.3V @ 500mA（在满载条件下）
- 静态电流（Iq）：约 5mA（典型）
- 过流保护：内置过流保护机制，提升短路与过载时可靠性
- 工作电压场景：适用于 12V 电源环境的电源降压到 3.3V
- 工作温度范围：-40℃ ~ +85℃
- 封装：SOT-89，单通道
三、电气与热性能要点
- 最低输入电压要求：输入电压须高于输出电压加压差，理论最低约为 3.3V + 1.3V ≈ 4.6V，但典型使用场景为 12V 输入。
- 功耗与热量示例（满载）：P = (Vin - Vout) × Iout = (12V - 3.3V) × 0.5A ≈ 4.35W。对于 SOT-89 封装来说，4W 级别的耗散需要良好的 PCB 散热与热限流考虑，建议在高功率工况下评估结温并做热降额设计。
- 低静态电流 5mA 有利于降低待机耗电，但仍需在电池供电系统中考虑。
四、封装与布板建议
- SOT-89 小封装适合空间受限设计，建议在 PCB 上为器件下方和引脚周围预留足够的铜箔以增强散热（加宽地或散热焊盘）。
- 输入侧建议并联 1µF–10µF 低 ESR 陶瓷电容以抑制瞬态与 输入线路阻抗；输出侧常用 10µF 低 ESR 电容（陶瓷或钽电容，注意稳定性和等效串联电阻要求）以保证稳压器的稳定性与瞬态响应。请参考厂家对外部电容的具体要求。
五、典型应用场景
- 工业控制模块与传感器供电（-40℃~+85℃ 适用）
- 单片机、通信模块与外围电路的 3.3V 稳定电源
- 汽车电子附件、安防与物联网终端（需结合散热与工作环境评估）
六、选型与注意事项
- 若系统工作在高输入电压并需要长期满载输出，须关注器件结温与 PCB 散热能力，必要时采用降压前级或更低压差器件以降低功耗。
- 在设计时确认具体引脚排列、最大输入电压与保护特性（例如是否含热关断）请以 UTC 正式数据手册为准。
- 对于电池供电或低功耗场景，若 5mA 静态电流不可接受，应考虑静态电流更低的器件方案。
七、结论
UR133AG-33-AB3-B-R 提供稳定的 3.3V/500mA 输出、内置过流保护且工作温度覆盖工业级范围，适合多数需要稳压、结构简单的设计。但在高 Vin 到 3.3V 的降压场合会产生较大功耗，务必做好热设计或考虑开关降压方案以提高能效。若需完整电气特性曲线、引脚定义与典型应用电路，请索取 UTC 官方数据手册。
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