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BELLING ULN2803
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BELLING ULN2803
- Type
- BELLING
- Minimum package
- 1500 卷
Technical parameters
- Electronic Component
- BELLING
- Electronic Component
- ULN2803
- Electronic Component
- 1
- Package
- SOP18_300MIL
- Type
- BJT
- Electronic Component
- Darlington Transistor Array
- Electronic Component
- 0.817g
- Electronic Component
- 1
- Channel Count
- Electronic Component
- Electronic Component
- BM0209570367
- Operating Temperature
- 30℃~+105℃
- Current(Ir)
- 50uA
- (Vf)
- 1.7V
- Capacitor(Ci)
- 25pF
- Current(off)
- 65uA
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
产品概述：ULN2803 达林顿晶体管阵列
一、引言
ULN2803 是一种高电压、高电流的达林顿晶体管阵列，广泛应用于各种电子设备中。它由贝岭（BELLING）品牌提供，具有优异的性能和多种应用场景。其工作温度范围为 -30℃ 到 +105℃，适合不同环境条件下的使用。
二、产品规格
- 工作温度范围：-30℃ 至 +105℃
- 电压：最大集电极-发射极电压为 50V
- 输出通道：8路独立的达林顿输出
- 封装：SOP-18-300mil，这种紧凑的封装设计使得它在电路板上占用较小的空间。
- 额定电流：每个输出通道能够承载高达 500mA 的电流。
- 输入表现：具有低输入电流特性，通常为 2.4V 以上的输入就可以激活输出。
三、工作原理
ULN2803 采用达林顿对晶体管的配置，每个输入引脚与输出引脚之间构成一个经典的开关电路。当输入端接受足够的电压信号时，达林顿对将导通，从而驱动输出端的负载。由于达林顿对有较高的电流增益，该组件非常有效率，可以实现低功耗的控制。
四、应用场景
ULN2803 的应用场景相当广泛主要包括：
- 继电器驱动：可以用来驱动各种继电器，适用于许多自动化控制系统。
- 灯光控制：在LED灯、荧光灯等照明设备的控制中，能有效无干扰地开关灯源。
- 步进电机驱动：在步进电机控制中，ULN2803 作为开关驱动，可以快速响应脉冲信号，实现精确的控制。
- 工业设备控制：适用于多种工业设备的自动化控制应用，如传感器、开关、闸门等。
五、优点
- 高效性：由于其达林顿配置，ULN2803 可以提供高存储的电流和电压，使其能够驱动高功率负载，而输入信号却非常微弱，降低了功耗。
- 紧凑的封装：SOP-18-300mil 的封装设计使得它在PCB设计中非常灵活，适合各类紧凑型电路。
- 耐高温性能：适应 -30℃ 到 +105℃ 的工作温度范围，能够在严酷环境中可靠运行。
- 多通道设计：八路设计方便实现多路输出，适合较为复杂的控制需求。
- 简化设计：集成化的设计减少了元件的数量，从而简化了电路设计，提高了可靠性。
六、总结
ULN2803 达林顿晶体管阵列是一款具有高电流驱动能力及宽广应用范围的组件，其高效性、耐高温性和"多通道"设计使其成为许多电子设计中的理想选择。这种元件不仅能够提高电路的性能，减少功耗，同时也因为其优秀的输出特性，广泛适用于工业控制、自动化设备以及电机驱动等多种领域。无论是专业的电子工程师还是爱好者，在需要可靠的驱动解决方案时，ULN2803 都是一个值得考虑的选项。
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