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WS2811B AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

WS2811B product

WS2811B

LED Drivers

WS2811BRGB LED driver3-channelconstant currentsingle-wire cascade256-level PWMSOP-8

WS2811B is a 3-channel constant-current RGB LED driver for cascaded pixel-lighting applications using a single-wire, 24-bit RGB data stream.

Best for

  • Cascaded RGB pixel lighting
  • LED strips and decorative strings
  • Three-channel constant-current LED control

Avoid if

  • A documented RoHS, REACH, MSL, or lifecycle declaration is mandatory and cannot be obtained separately
  • The controller cannot generate the specified single-wire timing

Check before use

  • Verify SOP-8 versus FSOP-8 package availability
  • Validate LED string headroom at the selected supply voltage
  • Confirm signal integrity and reset timing across the full cascade

Key specifications

Channels
3 RGB constant-current outputs
PWM resolution
256 levels
Typical output current
16.5 mA per channel
Logic supply
3.7 V to 5.9 V
PWM scan frequency
4 kHz
Reset interval
≥280 µs low

Compliance & Environment

RoHS
-
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

RGB LED strips and stringsPixel and decorative lightingLED modules and display pixels

Datasheet

657d735edb42ece98e7de00c03a27042_WS2811B.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for WS2811B: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

WS2811B is a three-channel constant-current LED driver IC with an integrated single-wire serial interface, 24-bit RGB data latch, PWM control, and cascaded data output.