WMSIC Electronic Components

worldsemi WS2811M

ModelWS2811M
PackageMSOP-8
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
worldsemi WS2811M
Type
WORLDSEMI
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WORLDSEMI
Electronic Component
WS2811M
Electronic Component
1
Package
MSOP-8
Electronic Component
LEDDriver
Electronic Component
PWM
Electronic Component
0.11g
Electronic Component
1
Channel Count
3
Electronic Component
BM0265069618
Operating Temperature
25℃~+85℃
Switching Frequency
800kHz
Output Voltage
20V
Output Current
16.5mA
Operating Voltage(DC)
3.5V~5.5V

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

Worldsemi WS2811M 3通道LED恒压驱动IC产品概述

一、产品核心定位

WS2811M是世芯微电子(Worldsemi)推出的3通道小功率LED恒压驱动IC,专为紧凑空间内的RGB LED照明/显示场景设计,采用MSOP-8封装,兼顾高集成度、低功耗与工业级可靠性,适配多种主流电源与环境温度。

二、关键电气参数解析

  1. 电源与控制
    工作电压范围为DC 3.5V~5.5V,兼容5V USB、3.7V锂电池等常见电源,无需额外电压转换;调光方式为PWM数字调光,支持0-100%线性调光,无颜色偏移与频闪问题,可精准匹配不同亮度需求。

  2. 驱动能力
    3通道独立输出,单通道最大输出电压20V(满足2-6颗串联LED的电压需求),单通道最大输出电流16.5mA,适合小功率RGB LED模组、短串LED或单颗LED的驱动。

  3. 开关特性
    内置800kHz高频开关,可显著缩小外围电感、电容的体积,同时降低电磁干扰(EMI),符合多数产品的电磁兼容要求,简化系统EMC设计。

  4. 环境适应性
    工作温度范围-25℃~+85℃,覆盖工业级温宽,可稳定工作于户外低温(如北方冬季-20℃)、高温(如南方夏季+80℃)环境,提升产品可靠性。

三、封装与物理特性

采用MSOP-8封装(尺寸约3.0mm×3.0mm),为贴片式无铅封装,兼容回流焊工艺;引脚布局紧凑,可节省PCB板空间(比传统DIP封装节省约60%面积),适合智能穿戴、便携音箱等小型化产品设计。

四、典型应用场景

WS2811M的参数特性使其适配多种细分场景:

  • 小型RGB装饰照明:桌面氛围灯、床头小夜灯、节日装饰灯串;
  • 便携式设备指示/背光:智能手环、蓝牙耳机、小型蓝牙音箱的RGB状态灯;
  • 户外小功率照明:庭院轮廓灯、自行车尾灯、小型广告灯箱;
  • 显示模组:小尺寸LED点阵屏、条形状态屏的RGB像素驱动。

五、性能优势总结

  1. 宽电压兼容:3.5V-5.5V覆盖主流电源,减少系统设计复杂度;
  2. 高频低EMI:800kHz开关频率优化外围元件,降低电磁干扰;
  3. 3通道独立控制:RGB三色单独驱动,颜色还原准确,支持混色设计;
  4. 工业级可靠性:-25℃~+85℃温宽,适应 harsh环境,提升产品寿命;
  5. 紧凑封装:MSOP-8节省空间,适合小型化、轻量化产品设计。

六、应用设计注意事项

  • 外围元件需匹配800kHz开关频率(如选择低ESR陶瓷电容、10μH左右电感);
  • 小电流输出下无需额外散热片,MSOP-8封装自带散热能力;
  • PWM调光信号频率建议100Hz-10kHz,避免信号干扰导致调光异常。

七、产品价值总结

WS2811M凭借高集成度、宽电压适配、工业级温宽与紧凑封装,成为小功率RGB LED驱动的高性价比选择,广泛适配消费电子、户外照明与显示等领域的设计需求,可有效降低系统成本与空间占用。

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