WMSIC Electronic Components

UTC ULN2803G-P20-R ULN2803G

ModelULN2803G-P20-R
PackageTSSOP-20
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+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
UTC ULN2803G-P20-R
Type
UTC
Minimum package
3000

Technical parameters

Electronic Component
UTC
Electronic Component
ULN2803G-P20-R
Electronic Component
1
Package
TSSOP-20
Type
BJT
Electronic Component
Darlington Transistor Array
Electronic Component
0.02g
Electronic Component
1
Channel Count
Electronic Component
Electronic Component
BM0230022094
Operating Temperature
40℃~+85℃
Current(Ir)
50uA
(Vf)
2V
Capacitor(Ci)
15pF
Current(on)
0.93mA
Current(off)
65uA

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

ULN2803G-P20-R 产品概述

一 外观与封装

ULN2803G-P20-R 为友顺(UTC)出品的八路达林顿晶体管阵列,采用 TSSOP-20 封装,适合表面贴装(SMT)工艺。引脚排列紧凑,便于在有限空间的 PCB 上布板和散热设计。

二 主要参数

  • 通道数:8 路
  • 最大输入电压 (VI):30 V
  • 工作温度范围:-40 ℃ ~ +85 ℃
  • 集电极泄漏电流 (Icex):50 μA
  • 输入电流(导通, on):0.93 mA
  • 输入电流(截止, off):65 μA
  • 正向压降 (Vf):2 V(典型,随工作电流变化)
  • 输入电容 (Ci):15 pF
  • 品牌:UTC(友顺)
  • 封装:TSSOP-20
  • 描述:未分类(通用八通道达林顿驱动器)

三 功能与特性

  • 八组 NPN 达林顿级组合,单芯片实现多路开关控制,输入端与常见逻辑电平兼容;输入电流低,便于直接由单片机或逻辑门驱动。
  • 输出为开集电极结构,可与外部正电源共同使用以驱动高于逻辑电平的负载,适配 30 V 以内的负载电源。
  • 内置保护特性(典型达林顿阵列器件常见),对感性负载使用时配合外部或芯片内抑制二极管能有效抑制反向电压尖峰。
  • 封装热阻低、可靠性高,满足工业级工作温度范围。

四 典型应用场景

  • 继电器、继电器驱动模块
  • 步进电机驱动(作为驱动通道)
  • 指示灯/LED 阵列驱动
  • 电磁阀、蜂鸣器等直流感性负载控制
  • 工业控制板、打印机、消费电子中多通道开关应用

五 典型使用建议

  • 输入端:由于输入电流典型为 0.93 mA,可直接由 MCU 或 TTL/CMOS 逻辑输出驱动,无需额外限流电阻;若需降低功耗或与弱驱动器配合,可评估并联电阻或缓冲器方案。
  • 输出端:当驱动感性负载(线圈、继电器)时,应确保有合适的回路抑制(例如并联续流二极管或连接到电源的抑制网络);若芯片内置共用抑制二极管,请按照数据手册正确接法(共用二极管接至负载电源)。
  • 电源与散热:VCE(on) 或正向压降在较大电流时可达典型 2 V,注意功耗随输出电流增大而上升,应评估 PCB 散热和总功耗限值,必要时增加铜箔散热或改用更大封装。
  • 布局要点:输出引脚与负载回路尽量缩短,高电流回路采用宽铜迹;输入侧与数字地分区处理,避免高电流回路噪声耦合到控制侧。

六 可靠性与注意事项

  • 工作温度范围 -40 ℃ ~ +85 ℃,适合工业级环境,但长时间在高温下工作会影响器件寿命与稳定性。
  • 集电极泄漏电流为 50 μA,断态下仍可能有微小漏电,对于高阻感测回路需注意漏电影响。
  • 设计时请参考完整的数据手册与原厂推荐的最大额定值,避免超过最大输入电压 30 V 和器件的热功耗极限。

七 订购与选型提示

  • 型号:ULN2803G-P20-R,封装 TSSOP-20,品牌 UTC(友顺)。
  • 选型时根据负载类型(阻性/感性)、工作电流和电源电压评估压降与散热需求;若需更高电流或更低 VCE(sat),应考虑采用功率更大的驱动器或并联外部功率晶体管/MOSFET。

本产品适用于需要多路开关/驱动且受限于空间的电路设计场合,具有输入兼容性好、通道集中、易于布板和维护的优点。如需详细电气特性曲线、时序和典型应用电路,请参考 UTC 官方数据手册或技术支持资料。

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