WMSIC Electronic Components

UTC ULN2803G-S18-R ULN2803G

UTC ULN2803G-S18-R ULN2803G
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Product image

ModelULN2803G-S18-R
PackageSOIC-18_300mil
BrandUTC
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

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Technical data

Product details

19 specifications

Core information

Product name
UTC ULN2803G-S18-R
Type
UTC
Minimum package
1000

Technical parameters

Electronic Component
Electronic Component
Electronic Component
UTC
Electronic Component
ULN2803G-S18-R
Electronic Component
1
Package
SOIC-18_300mil
Type
BJT
Electronic Component
Darlington Transistor Array
Electronic Component
0.976g
Electronic Component
1
Channel Count
Electronic Component
Electronic Component
BM69415894
Operating Temperature
40℃~+85℃
Current(Ir)
50uA
(Vf)
2V
Capacitor(Ci)
15pF
Current(on)
0.93mA

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

ULN2803G-S18-R 产品概述

概述

ULN2803G-S18-R 是一种高性能的达林顿晶体管阵列，采用了 UTC（友顺）品牌，封装类型为 SOP-18，宽度为 300mil。这款集成电路（IC）主要用于多种逻辑控制应用，特别是在驱动继电器、电机及灯光等负载方面非常有效。由于其内置的达林顿对配置，ULN2803G-S18-R 提供了较大的电流增益，使得用户无需使用外部组件便可有效处理较高的负载电流。

特性

  1. 高电流驱动能力：ULN2803G-S18-R 内部包含八个通道的达林顿对，可以提供高达 500mA 的输出电流，适用于驱动多种负载。
  2. 宽电压范围：该器件支持较宽的供电电压，工作电压范围通常为 5V 到 30V，适合不同电源环境下的应用需求。
  3. 集成保护电路：为了保护输出阶段，ULN2803G-S18-R 配备了内置的二极管，可以有效抑制反向电动势，避免对电路造成损坏。
  4. 简化设计：将多个达林顿对集成于单个封装中，大大简化了电路设计，降低了布局复杂度，提高了系统的可靠性。
  5. 兼容性强：ULN2803G-S18-R 可与多种逻辑电平的控制器兼容，如 TTL 和 CMOS，适应不同应用场景的需求。

应用场景

  • 继电器驱动：在自动化控制系统中，ULN2803G-S18-R 可用于驱动继电器，进而控制电力设备的开关。
  • 灯光控制：可通过控制多个灯光或LED，在智能家居系统中广泛应用。
  • 电机驱动：适用于小型电机的控制，帮助实现转速和方向的控制。
  • 工业控制：用于传感器信号的处理以及逻辑输出扩展，满足工业自动化要求。
  • 家用电器：在各种家用电器中可作为开关电路的控制元件，例如冰箱、空调等。

典型电路连接

在实际应用中，用户通常可以将分配给每个达林顿对的输入端与控制器的逻辑输出相连接，而输出端则连接到需要驱动的负载（如继电器、LED等）。此时，ULN2803G-S18-R 中的内置保护二极管会帮助保护负载和控制器，避免因反向电压导致故障。

  1. 驱动继电器：将输入端（如 IN1-IN8）连接到控制器的 GPIO，引脚，并将输出端（如 OUT1-OUT8）连接到继电器的控制端，形成完整的开关控制电路。
  2. LED 驱动：将 LED 的负极连接到输出端，正极接电源，通过输入信号控制 LED 的亮灭状态。
  3. 电机控制：可以将 H-桥配置与 ULN2803G-S18-R 结合使用，实现更复杂的电机驱动方案。

结论

ULN2803G-S18-R 是一款功能强大的达林顿晶体管阵列，提供了简单且高效的解决方案来控制多种电气负载。它的高电流输出能力、宽电压范围、内置防护机制和简洁的电路设计使其在众多应用场景中表现出色，尤其适合在需要可靠性的工业自动化和家用设备中应用。使用 ULN2803G-S18-R，设计工程师可以高效地实现复杂的控制逻辑，从而提升整体系统的性能和可靠性。

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