48x16 LED matrix driver with 16-bits PWM dimming and ultra low power | RRF | 76 | -40 to 85

Electronic devices are becoming smarter, requiring

to use larger quantity of LEDs for animation and indication purposes and high performance

LED matrix driver is required to improve user experience with small solution size.

The LP5890 is a highly integrated common cathode

matrix LED display driver with 48 constant current sources and 16 scanning FETs. A single

LP5890 is capable of driving 16 × 16 RGB LED pixels while stacking two LP5890s can drive

32 × 32 RGB LED pixels. To achieve low power consumption, the device supports separated

power supplies for the red, green, and blue LEDs by its common cathode structure.

Furthermore, the operation power of the LP5890 is significantly reduced by ultra-low

operation voltage range (Vcc down to 2.5 V) and ultra-low operation current (Icc down to 3.9

mA).

The LP5890 implements a

high speed transmission interface to support high device count

daisy-chained and high refresh rate while minimizing

electrical-magnetic interference (EMI). The device supports up to

50-MHz SCLK and up to 160-MHz GCLK (internal). Meanwhile, the device

integrates enhanced circuits and intelligent algorithms to solve the

various display challenges in multiple LED matrix applications:

Upper and downside ghosting, Non-uniformity in low grayscale,

Coupling, and Caterpillar caused by open or short LEDs, which make

the LP5890 a perfect choice in such applications.

The LP5890 also implements

LED open/weak short/short detections and removals during operations

and can also report this information to the accompanying digital

processor.