18-channel high-current RGB LED driver with 8-bit analog and 8-bit or 16-bit PWM dimming

The LP5861T is a

high-current and high-performance LED matrix driver. The device integrates 18 constant

current sinks with N (N = 6/8/11) switching MOSFETs to support N × 18 LED dots or N × 6 RGB

LEDs. The LP5861T is the direct driving version to support 18

LED dots or 6 RGB LEDs.

The LP5861T supports

both analog dimming and PWM dimming methods. For analog dimming, each LED dot can be

adjusted with 256 steps. For PWM dimming, the integrated 8-bit or 16-bit configurable PWM

generators enable smooth and audible-noise-free dimming control. Each LED dot can also be

arbitrarily mapped into 8-bit Group PWM to achieve dimming control together.

The LP5861T device

implements full addressable SRAM to minimize the data traffic. The ghost-cancellation

circuitry is integrated to eliminate both upside and downside ghosting. The LP5861T also

supports LED open and short detection functions. Both 1-MHz (maximum) I 2C and

12-MHz (maximum) SPI are available in LP5861T.