WMSIC Electronic Components

PCA9685PW,118 PCA9685PW

ModelPCA9685PW,118
PackageTSSOP-28
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
NXP PCA9685PW, 118
Type
NXP
Minimum package
2500 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
NXP
Electronic Component
PCA9685PW,118
Electronic Component
1
Package
TSSOP-28
Electronic Component
LEDDriver
Electronic Component
PWM
Electronic Component
0.149g
Electronic Component
1
Channel Count
16
Electronic Component
BM0231111239
Operating Temperature
40℃~+85℃
Switching Frequency
100kHz~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.

PCA9685PW,118 产品概述

一、产品简介

PCA9685PW,118 是恩智浦(NXP)推出的一款高集成度 16 通道 LED 驱动器 IC,采用 TSSOP-28 封装,工作电压范围宽(DC 2.3V ~ 5.5V),工作温度等级覆盖工业级(-40℃ ~ +85℃)。器件以 PWM 线性调光为主,单通道最大输出约 25mA,适合驱动小功率 LED、RGB 灯条及舵机控制等场景,便于多通道精确亮度控制与系统扩展。

二、主要特性

  • 通道数:16 路独立 PWM 输出,逐通道可单独设置占空比。
  • PWM 分辨率:12 位(4096 级)精细亮度控制,满足平滑渐变与渐明暗需求。
  • 调光方式:线性 PWM 调光,响应快、无色偏漂移,适合视觉平滑要求高的照明场合。
  • 接口:I2C 控制接口,兼容常见总线速率(典型可在 100kHz ~ 1MHz 范围内工作),便于 MCU 连接与多片器件级联。
  • 电气性能:逻辑/模拟供电 2.3V ~ 5.5V,单通道输出能力约 25mA(需注意热耗与驱动器总功耗限制)。
  • 封装与温度:TSSOP-28(P W 型号),工业级温度(-40℃ ~ +85℃)。

三、典型应用

  • 多通道 LED 照明与背光驱动(仪表盘、显示器背光、装饰灯)。
  • RGB/可寻址灯条的色彩混合与亮度管理。
  • 舵机控制(配合电源/驱动器用于伺服)与通用 PWM 外设控制。
  • 工业与消费类产品的状态指示与视觉效果控制。

四、工程使用要点

  • 电源与去耦:在 VCC 与 GND 之间靠近芯片放置充足的去耦电容(如 0.1µF 及适当的大电容),保证 PWM 切换期间电源稳定。
  • 输出限流与散热:单通道典型上限 ~25mA,若驱动更大电流应外接 MOSFET 或恒流源;多通道同时导通时注意总功耗与 PCB 散热设计。
  • I2C 总线:为保证稳定通信,按系统速率配置合适的上拉电阻;若多片级联,设置不同地址以避免冲突。
  • LED 供电:LED 的驱动电源可与逻辑电源隔离,需根据 LED 正向电压与串联数量设计电流限制元件(电阻或恒流源)。
  • PCB 布局:高开关密度区域与敏感模拟/数字走线分离,GND 平面完整以降低噪声耦合。

五、封装与采购信息

  • 型号:PCA9685PW,118;品牌:NXP(恩智浦)。
  • 封装:TSSOP-28(PW);管脚数量与引脚功能按标准数据手册定义(VCC、GND、SCL、SDA、OE、V+ 等关键引脚)。
  • 温度等级:工业级(-40℃ ~ +85℃),适合多数工业与消费电子场合。

结语:PCA9685PW,118 在多通道 LED 调光与 PWM 控制方面提供了高精度、易扩展的解决方案。系统设计时关注电源去耦、热管理与总线连线即可发挥其在照明与控制领域的优势。若需大电流驱动或特殊驱动模式,建议在器件前端配合外部功率级或恒流驱动电路。

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