Worldsemi WS2813B-V5

WS2813B-V5 is an intelligent externally-controlled LED light source with integrated control circuitry and light-emitting circuit. Its form factor is identical to a standard 5050 LED, with each component serving as a single pixel. Each pixel incorporates a smart digital interface, data latch, signal reshaping and amplification drive circuit, reverse polarity protection circuit, a high-precision internal oscillator, and a high-precision constant current control module, effectively ensuring excellent color consistency across pixels. Dual-signal transmission is implemented so that a single damaged pixel does not affect the overall color display. The data protocol uses single-wire return-to-zero communication. After power-on reset, the DIN pin receives data transmitted from the controller. The first 24 bits of incoming data are extracted by the first pixel and stored in its internal data latch; the remaining data is reshaped and amplified by the internal signal reshaping circuit, then forwarded via the DO pin to the next cascaded pixel. Each pixel transmission reduces the signal by 24 bits. Pixels employ automatic reshaping and forwarding technology, so the number of cascadable pixels is not limited by signal transmission degradation — only by signal transmission speed requirements. The port scan frequency of up to 2KHz ensures no flickering even when captured by high-definition cameras, making it ideal for high-speed moving applications. A RESET time of 280μs or more prevents false resets during interruptions, enabling support for lower-frequency, more cost-effective MCUs.

• All components integrated in 5050 package, no additional peripheral components required for a complete externally-controlled pixel
• Smart reverse polarity protection, no component damage when 5V power supply is connected in reverse
• Built-in signal reshaping circuit; each pixel reshapes the waveform before forwarding, preventing cumulative signal distortion along the line
• Each pixel supports 256 brightness levels per RGB channel, enabling full 16777216-color true-color display
• Port scan frequency: 2KHz
• Serial cascading interface, data reception and decoding via single signal line
• Breakpoint resume transmission with an additional signal line for dual-channel signal transmission, ensuring no disruption to overall display when a single pixel fails
• No additional circuitry required when transmission distance between any two points does not exceed 2 meters
• Cascade count ≥1024 pixels at 30 fps refresh rate
• Data transmission speed up to 800Kbps
• High color consistency, excellent cost-performance ratio
• No external electronic components required, including capacitors

• Consumer Electronics
• LED Lighting & Illumination
• Computers & Peripherals
• Gaming Devices
• Various Electrical Appliances