WMSIC Electronic Components

PCA9634D,118 PCA9634D

ModelPCA9634D,118
PackageSO-20
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
NXP PCA9634D, 118
Type
NXP
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
NXP
Electronic Component
PCA9634D,118
Electronic Component
1
Package
SO-20
Electronic Component
LEDDriver
Electronic Component
PWM; Analog
Electronic Component
0.76g
Electronic Component
1
Channel Count
8
Electronic Component
BM0263483782
Operating Temperature
40℃~+85℃
Switching Frequency
97kHz~1MHz
Output Voltage
5.5V
Output Current
25mA
Operating Voltage(DC)
2.3V~5.5V

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

PCA9634D,118 8通道LED驱动器产品概述

一、核心身份与品牌背景

PCA9634D,118是恩智浦(NXP)推出的8通道LED专用驱动器IC,定位于小功率LED的集中控制与调光,采用SO-20封装,属于工业级可靠性设计的电源开关型方案。作为NXP LED驱动产品线的经典型号,其继承了NXP在I2C接口控制与电源管理领域的成熟技术,广泛适配工业、车载、消费电子等场景的LED状态指示与背光控制需求。

二、关键电气参数与性能优势

1. 宽电压与宽频率适配

  • 工作电压:2.3V~5.5V DC宽范围,可直接匹配3.3V(主流MCU)、5V(传统电源)供电系统,无需额外电平转换或稳压电路,简化系统成本与布线;
  • 开关频率:97kHz~1MHz可调,高频模式(≥100kHz)可有效抑制LED视觉闪烁,低频模式可降低功耗,适配不同LED负载的切换需求。

2. 8通道独立驱动

内置8路独立输出通道,每通道可驱动25mA典型电流,精准匹配小功率LED(如φ3/φ5指示LED、小型背光LED);单通道电流精度稳定(±5%以内),避免多LED亮度不均,满足指示灯的一致性要求。

3. 工业级环境适应性

工作温度覆盖**-40℃~+85℃**,符合工业级器件标准,可稳定运行于低温(北方户外设备)、高温(车载中控)等严苛环境,抗温变与抗干扰能力强。

三、多模式调光功能详解

PCA9634D,118支持PWM调光+模拟调光双模式,灵活适配不同场景的调光需求:

  • PWM数字调光:通过I2C设置占空比(0~100%),调光范围宽、无颜色偏移,适合彩色LED(如RGB状态灯)的亮度调节,数字控制易实现精准调光;
  • 模拟调光:通过调整输出电流实现线性调光,响应速度快(微秒级),适合实时亮度变化场景(如车载仪表盘背光随环境光调整);
  • 两种模式可独立或组合使用,用户可根据应用需求灵活切换。

四、I2C接口控制特性

采用标准I2C通信接口,仅需SDA(数据线)、SCL(时钟线)两根线即可实现多通道控制,大幅简化系统布线:

  • 支持多设备级联:通过地址引脚(A0/A1/A2)设置不同I2C地址(典型0x20~0x27),可扩展至8个器件同时工作,驱动64路LED;
  • 控制功能丰富:可单独开关任意通道、设置调光参数(占空比/电流)、读取通道输出状态,实现集中化LED管理。

五、封装与典型应用

1. SO-20封装特点

采用SO-20(小型 outline)封装,引脚间距1.27mm,适合通孔焊接或贴片安装,PCB布局简单,占用空间小(约10mm×6mm),适配紧凑型设备设计。

2. 典型应用场景

  • 工业控制:PLC、变频器的8路状态指示灯(电源、运行、故障、通讯等);
  • 车载电子:仪表盘背光、中控按键背光、车门氛围灯小区域控制;
  • 消费电子:小型LCD/OLED背光、智能开关指示灯、玩具LED矩阵;
  • 智能家居:智能插座、传感器节点的状态指示LED控制。

六、总结

PCA9634D,118凭借宽电压适配、8通道独立驱动、双模式调光、I2C集中控制等核心优势,成为小功率LED驱动的高性价比选择。其工业级温度范围与NXP的可靠性设计,使其在严苛环境下仍能稳定工作,适用于从消费电子到工业控制的多领域应用。

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