WMSIC Electronic Components

worldsemi WS2814B

ModelWS2814B
PackageSOP-10
BrandWORLDSEMI
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
worldsemi WS2814B
Type
WORLDSEMI
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WORLDSEMI
Electronic Component
WS2814B
Electronic Component
1
Package
SOP-10
Electronic Component
LEDDriver
Electronic Component
PWM
Electronic Component
0.126g
Electronic Component
1
Channel Count
4
Electronic Component
BM0264717364
Operating Temperature
40℃~+85℃
Output Current
17.5mA
Operating Voltage(DC)
3.7V~5.3V
Electronic Component
Electronic Component
Electronic Component
4000

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

WS2814B 4通道LED驱动芯片产品概述

一、核心参数总览

WS2814B是世芯电子(Worldsemi)推出的一款入门级4通道LED驱动芯片,核心参数精准匹配中低端LED照明与显示的主流需求:

  • 工作电压:直流3.7V~5.3V(适配锂电池、USB升压等常见电源);
  • 驱动通道:4个独立可控通道(可支持RGBW四色LED);
  • 单通道输出电流:17.5mA(稳定驱动常规小功率LED);
  • 调光方式:PWM脉冲宽度调制(无频闪、调光范围宽);
  • 工作温度:-40℃~+85℃(宽温覆盖户外/工业极端环境);
  • 开关管配置:内置MOS开关管(无需外接功率管);
  • 封装形式:SOP-10贴片封装(体积小巧、布线方便)。

这些参数的适配性强——3.7V可直接匹配18650锂电池,5.3V兼容USB 5V升压电源,为不同场景的电源设计提供了灵活性。

二、关键特性深度解析

1. 宽电压+宽温的双重适配

WS2814B的电压范围覆盖了移动设备(锂电池3.7V)到固定电源(USB升压5.3V),无需额外电压转换电路即可直接供电。同时,-40℃~+85℃的宽温工作范围,能在北方冬季户外(-20℃)、设备内部高温(+70℃)等环境下稳定运行,避免了温度波动导致的LED亮度跳变。

2. 4通道独立驱动+精准PWM调光

4个通道可分别控制不同颜色LED(如RGBW),每个通道输出电流稳定在17.5mA,保证多LED亮度一致性。PWM调光支持0%~100%线性调光,无明显频闪,且调光过程中颜色饱和度变化均匀——比如氛围灯从暖白到冷白的渐变,视觉上无突兀感。

3. 内置开关管简化设计

芯片内置MOS开关管,无需外接功率管即可驱动LED,外围元件减少约30%(BOM成本降低),同时简化PCB布线,缩小产品体积(比如智能手环的LED指示模组可直接集成)。

4. 单线级联传输(实用特性补充)

WS2814B支持单线级联:多芯片串联时仅需1根数据线即可控制所有通道,布线效率提升显著。例如10个芯片级联仅需3根线(电源、地、数据线),适合长距离LED串灯、迷你显示模组等场景。

三、SOP-10封装与引脚功能

WS2814B采用SOP-10贴片封装(尺寸约4.9mm×6.0mm),引脚定义清晰,无需复杂接线:

  1. VDD:电源正极(3.7V~5.3V);
  2. GND:电源负极;
  3. DIN:数据输入(单线控制);
  4. DOUT:数据输出(级联下一级芯片);
  5. CH1:通道1输出(接LED正极);
  6. CH2:通道2输出;
  7. CH3:通道3输出;
  8. CH4:通道4输出;
  9. NC:空脚;
  10. NC:空脚。

封装体积小巧,可直接贴装在常规PCB板上,适配各种小型化产品布局。

四、典型应用场景

WS2814B凭借参数优势,广泛覆盖以下场景:

  1. 小型LED显示模组:迷你电子钟、智能指示牌的像素驱动(4通道覆盖RGBW);
  2. 多色氛围灯:桌面RGBW台灯、汽车氛围灯(宽电压适配车载电源);
  3. 户外景观灯:串灯、埋地灯(宽温适应昼夜温差);
  4. 移动电子设备:智能手环的状态指示灯、儿童玩具的LED装饰灯(锂电池供电);
  5. 工业控制指示:设备面板的多色状态灯(宽温适应设备内部高温)。

五、应用优势总结

WS2814B在同价位芯片中,具有3个核心优势:

  • 成本可控:内置开关管减少外围元件,降低量产成本;
  • 设计简单:单线级联简化布线,缩短开发周期(比如玩具厂无需复杂电路设计);
  • 场景兼容:宽电压、宽温覆盖移动、户外、工业等多场景,无需更换芯片即可适配不同产品。

作为世芯电子的主流入门级产品,WS2814B适合对成本敏感、需要快速量产的中低端LED应用,是小型LED产品设计的优选方案。

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