WMSIC Electronic Components

TJA1028TK/5V0/20/J TJA1028TK

ModelTJA1028TK/5V0/20/J
PackageHVSON-8-EP(3x3)
BrandNXP
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 23+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
NXP TJA1028TK / 5V0 / 20 / J
Type
NXP
Minimum package
6000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
NXP
Electronic Component
TJA1028TK/5V0/20/J
Electronic Component
1
Package
HVSON-8-EP(3x3)
Type
Transceiver
Electronic Component
LIN Transceiver
Electronic Component
0.07g
Electronic Component
1
Features
TXD; Bus; Low Power
Electronic Component
BM0265604381
Operating Voltage
5.5V~28V
Operating Current
4.5mA
Receiver
1
Static Current
45uA
Electronic Component
±8kV

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

NXP TJA1028TK/5V0/20/J LIN收发器产品概述

一、核心定位与基本属性

TJA1028TK/5V0/20/J是恩智浦(NXP)推出的单通道LIN总线收发器,作为LIN协议的物理层(PHY)器件,集成1个LIN驱动器和1个接收器,实现微控制器(MCU)与LIN总线之间的信号电平转换(如MCU的逻辑电平转LIN总线的差分信号)。该器件专为低成本、低功耗、紧凑空间的通信场景设计,核心应用聚焦汽车电子及工业控制领域的子系统互联。

二、关键电气参数解析

1. 电压与电流特性

  • 工作电压范围:5.5V28V,完美覆盖汽车12V系统全工况(正常工作916V、启动峰值24V、低电压极限5.5V),无需额外电压转换电路;
  • 工作电流:4.5mA(典型值),满足总线活跃时的通信功耗;
  • 静态电流:45μA(典型值),支持休眠模式,大幅降低系统待机时的电池损耗(汽车熄火后关键优势,符合欧盟ECE R100低功耗法规)。

2. 防护与可靠性

  • ESD静电防护:±8kV(接触放电),符合汽车电子EMC标准(ISO 10605),有效抵御车载环境中的静电干扰(如人员开关车门产生的静电);
  • 总线故障保护:内置过流、过压保护(总线短路到地/电源时自动限流),避免器件损坏,提升系统抗干扰性。

三、封装与物理特性

该器件采用8引脚HVSON-EP(3×3mm)封装,具备以下特点:

  • 紧凑尺寸:3×3mm小封装+0.5mm引脚间距,适合汽车仪表、BCM子模块等空间紧张的场景;
  • 热增强设计:EP(暴露焊盘)提升热传导效率,降低器件结温,延长长期可靠性;
  • 简化引脚:包含VCC(电源)、GND(地)、LIN(总线收发)、WAKE(唤醒)、SLEEP(休眠控制)等引脚,外围电路仅需少量电容、电阻即可工作。

四、典型应用场景

TJA1028TK/5V0/20/J的核心应用集中在低成本通信需求场景:

  1. 汽车车身控制子系统:车窗升降、门锁、座椅加热、后视镜调节等从节点(通过LIN总线与BCM主节点通信);
  2. 车载仪表与显示:辅助仪表(油温表、燃油表)、小尺寸显示屏的LIN接口;
  3. 动力系统辅助模块:电池温度传感器、电机温度监测的LIN节点;
  4. 工业控制:车间环境监测(温湿度传感器)、小型设备通信的低成本LIN收发器。

五、设计价值与核心优势

  1. 成本优化:单收发器集成+小封装设计,减少PCB面积及外围元件数量,降低系统BOM成本;
  2. 可靠性适配:宽电压范围、高ESD防护及总线保护,完美应对汽车振动、静电、电压波动等恶劣环境;
  3. 低功耗优势:休眠模式45μA静态电流,避免汽车熄火后亏电,延长电池寿命;
  4. 协议兼容性:适配LIN 2.0/2.1协议标准,兼容主流MCU(如NXP S32K、ST STM32)的LIN控制器。

六、应用注意事项

  1. 总线终端电阻:需在LIN总线两端并联120Ω终端电阻(主节点侧可选带开关的电阻,休眠时断开);
  2. 电源滤波:VCC引脚附近并联100nF陶瓷电容(靠近器件),抑制电源噪声;
  3. 唤醒配置:WAKE引脚可通过外部信号(按键)或总线信号唤醒,需按datasheet设置唤醒阈值;
  4. 散热设计:EP焊盘需连接PCB地平面,提升散热效率(尤其高温环境下)。

该器件凭借“低成本、低功耗、高可靠性”的特点,成为汽车电子及工业低成本通信领域的主流LIN收发器选择。

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