WMSIC Electronic Components

worldsemi WS2814F

ModelWS2814F
PackageS0P8
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
worldsemi WS2814F
Type
WORLDSEMI
Minimum package
3000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WORLDSEMI
Electronic Component
WS2814F
Electronic Component
1
Package
S0P8
Electronic Component
LEDDriver
Electronic Component
PWM
Electronic Component
0.06g
Electronic Component
1
Channel Count
4
Electronic Component
BM0264717356
Operating Temperature
40℃~+85℃
Output Voltage
20V
Output Current
16.5mA
Operating Voltage(DC)
3.7V~5.3V
Electronic Component
Electronic Component

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

WS2814F 四通道LED驱动控制芯片产品概述

WS2814F是世芯电子(Worldsemi)推出的一款高集成度四通道LED驱动控制芯片,针对小功率LED的多通道驱动与调光需求设计,凭借宽电压适配、宽温范围及小型化封装等特点,广泛适用于便携式电子、车载、户外照明等场景。

一、核心功能与设计特点

这款芯片的核心优势集中在多通道集成、灵活调光及宽环境适配三个方面:

  1. 4路独立驱动:单芯片集成4个LED驱动通道,可同时驱动4组单色LED或组合为RGBW等多色LED,无需额外扩展通道,简化电路设计;
  2. PWM数字调光:支持外部PWM信号调光,调光精度高(可实现0%-100%亮度线性调节),无模拟调光常见的频闪问题,且调光频率兼容100Hz-2kHz的常见MCU控制信号;
  3. 宽电压适配:工作电压覆盖DC 3.7V(锂电池典型电压)至5.3V(USB升压后电压),无需额外稳压电路即可兼容多种供电场景;
  4. 宽温可靠运行:工作温度范围为-40℃~+85℃,满足工业级环境(如车载低温启动、户外高温暴晒)的可靠性要求,降低环境适配成本。

二、关键电气参数详解

WS2814F的电气参数针对小功率LED驱动做了精准优化,核心参数如下:

  • 供电范围:DC 3.7V~5.3V(典型值5V,适配USB、锂电池供电);
  • 输出能力:单通道最大输出电压20V(满足高正向电压LED驱动,如蓝色/白色LED),额定输出电流16.5mA(适配常规0.5W以下小功率LED);
  • 通道特性:4通道独立输出,通道间电流一致性偏差≤±5%(确保多LED亮度均匀,无明暗差异);
  • 调光参数:PWM输入电平兼容3.3V/5V逻辑(常见MCU输出电平),占空比响应时间≤1μs,调光稳定性高。

三、封装与可靠性设计

WS2814F采用SOP8表面贴装封装,具有以下实用优势:

  1. 小型化:封装尺寸约4.9mm×3.9mm×1.5mm,适合便携式设备(如智能手环、蓝牙耳机)的紧凑空间布局,不占用额外PCB面积;
  2. 焊接兼容:引脚间距1.27mm,兼容自动贴装与手工焊接,生产效率高,降低制造成本;
  3. 可靠性防护:内置ESD静电防护(符合HBM 2kV标准),抗干扰能力强,可避免生产、使用中的静电损坏;
  4. 低功耗散热:芯片内部采用低功耗驱动架构,多通道同时工作时的功耗≤100mW,无需额外散热片,仅需PCB预留少量铜箔即可满足散热需求。

四、典型应用场景

结合参数特点,WS2814F的典型应用集中在多通道LED指示与小型照明领域:

  1. 便携式电子设备:智能手环/手表的功能指示灯(4通道分别对应充电、蓝牙连接、低电、心率监测)、蓝牙耳机的配对/电量指示;
  2. 车载电子:汽车仪表盘的警示灯(如安全带、油量)、车内氛围灯(4通道组合RGBW)、倒车雷达指示灯;
  3. 户外小型模组:小型广告牌的像素点驱动、景观灯串的多色控制、户外传感器的状态指示;
  4. 智能家居:智能开关的工作状态灯、温湿度传感器的信号指示、智能门锁的电量/开锁指示。

五、应用注意事项

为确保芯片稳定工作,需注意以下细节:

  1. 供电防护:输入电压避免超过5.3V,建议在电源端串联10Ω~20Ω限流电阻,防止过压冲击损坏芯片;
  2. LED匹配:每个通道需串联限流电阻(计算公式:R=(Vcc - Vf_LED)/Iout,其中Vcc为供电电压,Vf_LED为LED正向电压,Iout=16.5mA),例如Vcc=5V、Vf_LED=2V时,R≈182Ω(可选180Ω或200Ω);
  3. PWM信号:输入PWM信号需为方波,占空比范围0%-100%,低电平需≤0.8V,高电平需≥2.4V(3.3V逻辑)或≥4V(5V逻辑);
  4. 布局建议:芯片靠近LED放置,减少输出线长度,避免电磁干扰;电源端需并联0.1μF陶瓷电容滤波,提升供电稳定性。

总结来说,WS2814F以高性价比、高集成度及宽环境适配性,成为小功率多通道LED驱动的优选方案,尤其适合对体积、功耗及可靠性有要求的应用场景。

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