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Siproin ULN2803
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Siproin ULN2803
- Type
- SIPROIN
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SIPROIN
- Electronic Component
- ULN2803
- Electronic Component
- 1
- Package
- SOP-18-300mil
- Electronic Component
- Darlington Transistor Array
- Electronic Component
- 0.767g
- Electronic Component
- 1
- Channel Count
- Electronic Component
- Electronic Component
- BM0219918023
- Operating Temperature
- 20℃~+70℃
- Current(Ir)
- 100uA
- (Vf)
- 1.7V
- Capacitor(Ci)
- 15pF
- 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.
ULN2803 产品概述
一、产品简介
ULN2803是一款高度集成的达林顿晶体管阵列，专为驱动高电流和高电压负载而设计。它包含八个独立的达林顿对，能够驱动高达500mA的负载电流，工作电压范围为0V至50V。得益于其出色的性能，ULN2803广泛应用于工业控制、家电控制、仪器仪表等各种场合，尤其是在需要驱动继电器、电机或其他高功率负载时，表现尤为优越。
二、关键规格与特性
结构与封装
- ULN2803采用SOP-18（Small Outline Package-18）封装，具有紧凑的体积及较小的PCB占用面积。该封装设计使得其适合在空间受限的应用中使用。
工作电压与电流
- 最大工作电压可以达到50V，能够适应各种高电压应用需求。同时，子电流峰值可达500mA，使其具备强大的驱动能力。每个输出通道在持续工作时可放心处理驱动负载。
功率和散热
- ULN2803的内置达林顿对结构，具有较高的增益，能够在低输入信号下驱动高输出电流。此外，其低饱和电压特性可以减少功耗，并降低发热量，提升使用的安全性和可靠性。
保护特性
- ULN2803具有内置的反向电流保护设计，避免在驱动感性负载时，反向电流对电路造成损害，极大增强了其在复杂工作环境中的稳定性。
逻辑兼容性
- 该器件的输入端可以与TTL（Transistor-Transistor Logic）或CMOS（Complementary Metal-Oxide-Semiconductor）逻辑电路兼容，方便与微控制器或其他数字电路直接对接，简化了设计和实现。
三、应用场景
ULN2803可以广泛地应用于多个领域，包括但不限于：
继电器驱动：
- 由于其能够处理较高的电流，ULN2803十分适合用于驱动各种电磁继电器，尤其是需要从低功耗微控制器控制高功耗设备的应用场景。
步进电机与直流电机控制：
- 在需要精确控制电机（例如步进电机或直流电机）的应用中，ULN2803提供了强大的输出驱动能力，可用于控制电机的启动、停止和转向。
数码显示器驱动：
- 在LED大屏或数码管显示器中，ULN2803可有效驱动多个LED串或数码管，有助于数字信息的清晰显示。
传感器接口：
- 在自动化系统中，ULN2803可以与多种传感器配合使用，驱动相应的指示灯或报警器，提供简单而有效的信号指示。
工业控制系统：
- ULN2803的高集成度与可靠性使其在工业自动化控制系统中不可或缺，可以用于各种比例阀、气缸等执行器的控制。
四、总结
ULN2803凭借其出色的性能、灵活的接口、以及极强的负载驱动能力，已成为电子设计中常用的元件之一。其在各类电子和工业控制系统中的广泛应用，使得该产品的重要性不言而喻。针对不断变化的市场需求，ULN2803以其高性价比和可靠性，不断满足各类应用场合的需要。
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