WMSIC Electronic Components

PCA9552PW

ModelPCA9552PW
PackageTSSOP-24
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
NXP PCA9552PW
Type
NXP
Minimum package
2500 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
NXP
Electronic Component
PCA9552PW
Electronic Component
1
Package
TSSOP-24
Electronic Component
LEDDriver
Electronic Component
PWM
Electronic Component
0.228g
Electronic Component
1
Channel Count
16
Electronic Component
BM0263483765
Operating Temperature
40℃~+85℃
Output Current
25mA
Operating Voltage(DC)
2.3V~5.5V
Electronic Component
Electronic Component
Electronic Component
2500

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

PCA9552PW — NXP 16通道 I²C LED Blinker(TSSOP-24)

一、概述

PCA9552PW 是恩智浦(NXP)推出的 16 通道 I²C/SMBus LED blinker 驱动器,工作电压范围宽(DC 2.3V ~ 5.5V),工作温度 -40℃ ~ +85℃,封装为 TSSOP-24。器件内置开关管与振荡器,支持 PWM 调光与两组可编程闪烁速率,适合需要独立 LED 闪烁但又希望减轻总线负载或释放 MCU 定时器的场景。

二、主要参数

  • 通道数:16 路独立输出
  • 电源电压:DC 2.3V ~ 5.5V
  • 单路输出电流:最高可达 25mA(设计时请参考 LED 与布局要求)
  • 调光方式:PWM(支持占空比控制)
  • 闪烁控制:内部振荡器,具有两种可编程闪烁速率(频率与占空比)
  • 接口:I²C-bus / SMBus
  • 工作温度:-40℃ ~ +85℃
  • 封装:TSSOP-24
  • 开关管:内置

三、功能亮点与使用价值

  1. 减少总线流量:与用普通 GPIO 扩展器(如 PCF8574、PCA9554)通过 I²C 发送重复开/关命令相比,PCA9552 仅需在初始化时为每路输出设置闪烁速率或 PWM,后续由器件本身定时器维持闪烁,从而大幅降低 I²C 通讯频次。
  2. 释放控制器资源:内置振荡器与 PWM 硬件让 MCU/MPU 无需占用定时器或循环任务来控制大量 LED 的闪烁与调光。
  3. 灵活性高:每路可配置为常亮、常灭或两级可编程闪烁模式,适合状态指示、报警灯、界面指示等多种场景。
  4. 可靠性与工业级温度:支持宽温度范围,适合嵌入式与工业应用。

四、典型应用

  • 控制面板与前面板指示灯、状态 LED
  • 网络设备、服务器机箱的故障/活动指示
  • 工业控制设备与仪表的状态显示
  • 家电、消费电子的背光与指示灯管理
  • 任何需要集中管理多路 LED 闪烁与调光的场合

五、工程实现与选型建议

  • 电流管理:器件标称单路可达 25mA,实际设计时请依据 LED 正向电压和散热能力选择合适限流方式(串联电阻或外部限流电路)。
  • I²C 布线:保持总线阻抗匹配,使用合适上拉电阻,注意地址与总线冲突管理。
  • 软件:初始化时设置每通道模式与两组闪烁参数,以后尽量减少对寄存器的频繁写入,发挥器件减负作用。
  • 包装与布局:TSSOP-24 适合中密度 PCB 布局,注意散热与焊接工艺。

总结:PCA9552PW 以其 16 路输出、内置振荡器与双速闪烁编程能力,为需要大量 LED 指示且希望降低 I²C 负载与 MCU 占用的设计提供了高效、可靠的解决方案。

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