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MC33972ATEKR2
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
17
specifications
Core information
- Product name
- NXP MC33972ATEKR2
- Type
- NXP
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- NXP
- Electronic Component
- MC33972ATEKR2
- Electronic Component
- 1
- Package
- SOIC-32-EP-300mil
- Electronic Component
- Other Interface
- Electronic Component
- 0.605g
- Electronic Component
- 1
- Features
- positions
- Electronic Component
- BM0264921221
- Operating Voltage
- 3.1V~5.25V
- Interface Type
- SPI
- Electronic Component
- Electronic Component
- Electronic Component
- 1000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MC33972ATEKR2 开关监控器产品概述
一、核心身份与应用定位
MC33972ATEKR2是恩智浦（NXP）推出的16通道数字开关状态监控器，专为需要高集成度、低功耗的多路开关检测场景设计。作为SPI串行接口的监控器件，它聚焦于简化开关状态采集流程，广泛适配工业控制、消费电子及汽车电子等领域的开关信号监测需求，尤其适合需要减少离散元件、优化PCB空间的应用。
二、关键电气与接口特性
1. 供电与功耗
支持3.1V~5.25V宽范围供电，适配不同电源系统（如5V MCU、3.3V低压系统）；典型工作电流低至2mA，空闲模式下可进一步降至μA级，满足低功耗场景要求。
2. SPI串行接口
采用标准化SPI接口（支持SPI模式0/3），时钟频率最高可达10MHz，可快速读取16路开关状态；支持菊花链级联扩展——通过SPI引脚串联，最多可级联8个器件，实现128路开关监控，无需额外地址译码电路。
3. 开关检测能力
内置16路独立输入通道，支持常开/常闭开关自适应，可自动识别开关类型；每个通道具备**±8kV接触放电ESD防护**，提升抗干扰能力，适应电磁环境复杂的工业/汽车场景。
4. 中断与状态反馈
集成状态变化中断输出（INT引脚）：当任意通道开关状态发生改变时，器件主动触发中断，减少主控制器轮询频率，优化系统效率；支持状态寄存器读取，可快速获取所有通道的当前状态。
三、封装与安装适配
采用32引脚SOIC带暴露焊盘（EP）封装（SOIC-32-EP），属于表面贴装型器件，具备以下优势：
- 尺寸紧凑：SOIC封装体积小（约10.3mm×7.5mm），适合高密度PCB设计；
- 散热优化：暴露焊盘直接焊接到PCB接地层，有效提升散热性能，确保器件在高负载下稳定工作；
- 生产兼容：支持标准回流焊工艺，适配自动化生产线，降低焊接难度与成本。
四、典型应用场景
该器件的多路监控与SPI特性，使其在多领域落地：
- 工业控制：PLC输入模块的按钮、传感器开关状态检测；
- 消费电子：智能家居控制面板按键、游戏机手柄按键反馈；
- 汽车电子：车载中控物理按键（空调、音量）、车门/车窗开关状态监控（符合AEC-Q100汽车级标准）；
- 测试设备：自动化测试系统的多路开关状态采集模块。
五、产品价值总结
- 高集成度：单芯片替代16路离散开关检测电路，减少PCB空间与物料成本；
- 通信高效：SPI速率快、级联灵活，适合大规模多路监控；
- 可靠性强：宽供电、ESD防护、中断功能，适应恶劣环境并优化功耗；
- 设计简化：兼容主流MCU SPI接口，无需电平转换，降低系统设计复杂度。
该器件凭借上述特性，成为多路开关监控场景的高性价比选择，可有效提升系统集成度与可靠性。
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