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MSKSEMI ULN2803
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MSKSEMI ULN2803
- Type
- MSKSEMI
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MSKSEMI
- Electronic Component
- ULN2803
- Electronic Component
- 1
- Package
- SOP-18
- Type
- BJT
- Electronic Component
- Darlington Transistor Array
- Electronic Component
- 0.703g
- Electronic Component
- 1
- Channel Count
- Electronic Component
- Electronic Component
- BM0219848070
- Operating Temperature
- 40℃~+85℃
- Current(Ir)
- 50uA
- (Vf)
- 1.7V
- Current(on)
- 0.71mA
- Current(off)
- 63uA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ULN2803 产品概述
一、产品简介
ULN2803是一款广泛应用于电子控制系统的高电流驱动器，封装形式为SOP-18（小型封装）。它由MSKSEMI（美森科）公司生产，尤其适合需要驱动较大负载的场合，通常用于继电器、步进电机以及其它高电流负载。ULN2803内置8路达林顿对管级（Darlington pair），每路可承受高达500mA的电流，具有较高的电流增益和开关速度，使其能够高效地控制各种负载。
二、主要规格
ULN2803的主要技术规格包括：
- 通道数：8路独立通道
- 最大输出电流：每通道500mA，且多个通道可同时使用。
- 最大集电极-发射极电压（V_CE）：达50V，适用于多种不同的负载。
- 工作温度范围：-40°C至+85°C，适应各种环境条件。
- 输入电压范围：通常为5V、6V等，兼容TTL和CMOS逻辑，易于与微控制器和FPGA接口。
ULN2803还具有内置的保护二极管，用于对感性负载的反向电流进行钳制，避免对驱动器造成损害，这使得它在控制继电器和电机等感性负载时非常安全可靠。
三、功能特点
高电流驱动能力： ULN2803的每个输出通道均可以驱动大电流负载，使得它可以直接控制各种电气设备，省去了额外的功率放大器。
简单易用的接口： 作为一款专业的驱动器，ULN2803的输入端和微控制器的TTL、CMOS输出标准兼容，这使得设计和集成变得轻松，尤其适合嵌入式系统。
集成保护二极管： 内置的反向保护二极管能够有效处理感性负载引起的电流反向问题，避免电流回流对元件造成损害，提升系统的可靠性。
通道独立控制： 每个通道都是独立控制的，这意味着用户可以根据需要选择性地开启或关闭任意数量的通道，提供了极大的灵活性。
小型封装设计： SOP-18小型封装使得ULN2803适用于空间有限的应用场景，能够集成在紧凑的电路板设计中。
四、应用场景
ULN2803因其卓越的性能和灵活性，广泛应用于以下领域：
- 工业自动化：用于控制机器人、传送带、气动元件等设备的驱动。
- 建筑物照明控制：通过继电器或者灯具的驱动，集成在智能照明系统中。
- 家用电器：例如洗衣机、空调等电器中的电机驱动。
- 汽车电子：应用于汽车的电气控制系统，如车窗电机、座椅调节等。
五、总结
ULN2803是一款高效、灵活且易于集成的多通道高电流驱动器，适用于各种高功率负载驱动需求。它尤其适合在需要可靠性和安全性的应用中使用，凭借其众多功能特性，成为电子设计师和工程师在构建复杂系统时的重要组件。无论是在工业应用还是消费电子领域，ULN2803始终展现出其卓越的性能，是电子控制系统中不可或缺的元件。
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