Texas Instruments LP5866 6x18 LED Driver
Texas Instruments LP5866 6x18 LED Driver
Texas Instruments LP5866 LED Matrix Driver integrates 6 MOSFETs for up to 108 LED dots or 36 RGB LEDs. The LP5866 supports analog dimming and PWM dimming. For analog dimming, each LED point can be adjusted in 256 steps. For PWM dimming, an integrated 8-bit or 16-bit configurable PWM generator provides smooth dimming control with no audible noise. Each LED point can also be arbitrarily mapped to an 8-bit group PWM to achieve dimming control.
Texas Instruments LP5866 6*18 implements a complete addressable SRAM to minimize data traffic. Integrated ghost removal circuit to eliminate upper and lower ghost images. The LP5866 also supports LED open and short detection functions. 1MHzI2C and 12MHz SPI are available in the LP5866.
LP5866 Features
LED Matrix Topology
18 constant current sinks, 6 scan switches for 108 LED points
Configurable as 1 to 6 scan switches
LP5866 operating voltage range
VCC/VLED range: 2.7V--5.5V
Logic pin compatible with 1.8V, 3.3V and 5V
Individual on/off control for each LED point
Analog Dimming (Current Gain Control)
Global 3-digit maximum current (MC) setting for all LED points
Three 7-bit color current (CC) settings for red, green and blue
Individual 8-bit point current (DC) settings for each LED point
PWM dimming, no audible noise frequency
Global 8-bit PWM dimming for all LED points
Three groups of programmable 8-bit PWM dimming for arbitrary mapping of LED points
Individual 8-bit or 16-bit PWM dimming for each LED point
8 high precision constant current sinks
Per current sink: 0.1mA to 50mA (when VCC≥3.3V)
Inter-device error: ±3% (when channel current = 50mA)
Inter-channel error: ±3% (channel current = 50mA)
Ultra low power consumption
Shutdown mode: ICC≤1uA (EN=low level)
Standby mode: ICC≤10uA (EN=high level, CHIP_EN=0) (data retention)
Active mode: ICC=4.3mA (typ.) (when channel current=5mA)
Interface options
1MHz (max) I2C interface (when IFS=low)
12MHz (max) SPI interface (when IFS=high)
application
LP5866 LED animation and indication
Keyboards, mice and gaming accessories
Large and Smart Appliances
Smart speakers, wired and wireless speakers
Audio mixers, DJ equipment and radio
Access equipment, switches and servers
Optical Module Constant Current Sink
