The LP5891 integrates 48 constant current sources and 16 scanning FETs. A single LP5891 is capable of driving 16 × 16 RGB LED pixels while stacking two LP5891 devices can drive 32 × 32 RGB LED pixels. To achieve low power consumption, the LP5891 supports separated power supplies for the red, green, and blue LEDs by its common cathode structure.

The LP5891 implements a high speed rising edge transmission interface (up to 50 MHz) to support high device count daisy-chained and high refresh rate while minimizing electrical-magnetic interference (EMI). SCLK must be continuous, no matter there is data on SIN or not, because SCLK is not only used to sample the data on SIN, but also used as a clock source to generate GCLK by internal frequency multiplier. Based on rising-edge CCSI protocol, all the commands/FC registers/SRAM data are written from the SIN input terminal, and all the FC registers/ LED open and short flag can be read out from the SOUT output terminal. Moreover, the device supports up to 160-MHz GCLK frequency and can achieve 16-bit PWM resolution, with 3840 Hz or even higher refresh rate.

Meanwhile, the LP5891 integrates enhanced circuits and intelligent algorithms to solve the various display challenges in Narrow Pixel Pitch (NPP) LED display applications and mini and micro-LED products: dim at the first scan line, upper and downside ghosting, non-uniformity in low grayscale, coupling, caterpillar caused by open or short LEDs, which make the LP5891 a perfect choice in such applications.

The LP5891 also implements LED open, weak short, short detections and removals during operations and can also report this information out to the accompanying digital processor.