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GR ULN2003
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- GR ULN2003
- Type
- GR
- Minimum package
- 4000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- GR
- Electronic Component
- ULN2003
- Electronic Component
- 1
- Package
- SOP-16
- Electronic Component
- Darlington Transistor Array
- Electronic Component
- 0.18g
- Electronic Component
- 1
- Channel Count
- Electronic Component
- Electronic Component
- BM0264555455
- Operating Temperature
- 40℃~+85℃
- Current(Ir)
- 50uA
- (Vf)
- 1.7V
- Current(on)
- 0.7mA
- Electronic Component
- Electronic Component
- Electronic Component
- 4000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ULN2003 达林顿晶体管阵列（GR·国睿）产品概述
ULN2003 是一款常用的七通道达林顿晶体管阵列驱动器，GR（国睿）提供的此款器件采用 SOP-16 封装，面向中低电压、大电流的负载驱动应用。器件每通道内部为达林顿对结构，便于将微控制器或逻辑电路直接驱动继电器、步进电机、直流电机线圈、指示灯等负载。
一、主要规格亮点
- 通道数：7 路（七通道，单芯片驱动七个负载）
- 集射极击穿电压 Vceo：50 V（对每路输出的耐压能力）
- 集电极电流 Ic：500 mA（单通道最大输出电流）
- 最大输入电压 VI：30 V（输入端允许承受的最大电压）
- 工作温度范围：-40 ℃ ~ +85 ℃
- 输入电流 (on)：约 0.7 mA（典型值，保证与 TTL/CMOS 兼容）
- 正向压降 Vf：约 1.7 V（达林顿输出的饱和压降参考值）
- 反向电流 Ir：50 μA（在反向或截止状态下的漏电流）
- 封装：SOP-16（利于 PCB 布局与表面贴装加工）
二、功能与典型特性
- 达林顿对结构提供较高的电流放大倍数，输入端仅需小电流即可驱动较大负载电流。
- 输出耐压 50V，可驱动中等电压的电感性或阻性负载。
- 输入兼容常见逻辑电平，适配微控制器直接驱动。
- 具有较低的静态输入电流和可接受的输出泄漏电流，便于低功耗系统设计。
- 常见封装 SOP-16 有利于批量生产和热传导到 PCB。
三、典型应用场景
- 继电器、螺线管、继电器阵列驱动
- 小型步进电机及直流电机驱动（作为低端驱动或使能级）
- 灯珠、指示灯和 LED 阵列驱动
- 工控接口、驱动外设开关和模块化电路板的负载开关
四、设计注意事项
- 输出饱和压降（约 1.7V）在高电流工作时会产生显著功耗，应评估功耗与温升；必要时在 PCB 增大铜箔或加强散热。
- 若驱动感性负载，建议使用带钳位二极管的版本或在外部并联反向二极管/吸收元件以抑制反向尖峰，保护器件。
- 单通道 500 mA 为峰值参考，长期工作应考虑并联或降低工作电流以延长可靠性。
- 输入侧最大允许电压为 30 V，应避免超出该限值以防损坏输入结构。
五、封装与散热建议
SOP-16 封装便于贴装，但热阻相对较高。对于接近 Ic 500 mA 的负载，应采用较大铜面积铺铜、热过孔或分布式负载以降低单通道热应力，并保证环境温度在 -40~+85 ℃ 范围内使用。
总结：GR（国睿）提供的 ULN2003 七通道达林顿驱动器以其通道密度高、输入驱动小、输出耐压适中等特性，适合中低压、分散负载驱动场合。在电流、散热与感性抑制措施设计到位的前提下，可在工控、家电、自动化和嵌入式项目中可靠使用。
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