11 × 18 LED matrix driver with 8-bit analog and 8-/16-bit PWM dimming | RKP | 40 | -55 to 125

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 LP586x devices are a family of high performance LED matrix drivers.

The devices integrate 18 constant current sinks with N (N = 1/2/4/6/8/11) switching MOSFETs

to support N × 18 LED dots or N × 6 RGB LEDs. The LP5860 integrates 11 MOSFETs for up to 198

LED dots or 66 RGB LEDs.

The LP5860 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 LP5860 device implements full

addressable SRAM to minimize the data traffic. The ghost-cancellation circuitry is

integrated to eliminate both upside and downside ghosting. The LP5860 also supports LED open

and short detection functions. Both 1-MHz (maximum) I2C and 12-MHz (maximum) SPI

are available in LP5860.