Pixel Protocol Overview: UCS5603

This pixel protocol was designed by Lianxinke in China. UCS5603 is very similar to UCS8903 but is built on an 8-bit color data design. Its output pins can support voltages up to 30V, and there is also a redundant data line, to allow for continuous operation even if a single pixel fails. The control circuit comes in a SOP8 package, allowing for more flexibility with LED choice.

PixLite Support

Are you looking for UCS5603 pixel drivers that work with Art-Net or sACN? All PixLite Mk3 products support UCS5603 as an available Pixel IC type, so get in touch with us to find out how the lighting specialists at Advatek can support you in your pixel lighting project.

Current Control

UCS5603 has the ability to digitally control the current of the connected LEDs. Use the 4-bit current control per color to lower the brightness without sacrificing resolution, and tune the current of individual colors, allowing for more accurate color mixing. This individual current control can be set when configuring your PixLite Mk3 controller

Technical Specifications

Clock Type Data-Only
Color Resolution 8 bits
Physical Package SOP8
RGB Yes
RGBW See UCS2904
Output Pixel Voltage 5 – 30V
PWM Rate 1000Hz
Suitable Camera Up to 34fps, see Refresh Rate and PWM Rate
Data Transfer Rate 800kbps
Redundant Data Line Yes

UCS5603 Advantages

  • Up to 30V, allowing for very long cable lengths
  • High PWM rate allows for filming these pixels with cameras up to 34fps
  • Redundant data line reduces chance of entire strip failure

UCS5603 Disadvantages

  • Data-only restricts refresh rates to be limited by the speed of the protocol, which will generally be slow
  • Only 8 bits of data for each color makes dimming curves less smooth
Categories: Pixel LEDs