1 Features
• Operating voltage range:
– VCC/VLED range: 2.7 V to 5.5 V
– Logic pins compatible with 1.8 V, 3.3 V, and 5 V
• 18 high current and precision constant current
sinks:
– 125 mA per current sink when VCC ≥ 3.3 V
– Device-to-device error: ±5%
– Channel-to-channel error: ±5%
– Phase-shift for balanced transient power
• Ultra-low power consumption:
– Shutdown mode: ICC ≤ 2 uA when EN = Low
– Standby mode: ICC ≤ 10 uA when EN = High
and CHIP_EN = 0 (data retained)
– Active mode: ICC = 5 mA (typ.) when channel
current = 12.5 mA
• Flexible dimming options:
– Individual ON/OFF control for each LED dot
– Analog dimming (current gain control)
• Global 3-bit Maximum Current (MC) setting
for all LED dots
• 3 groups of 7-bit Color Current (CC) setting
for red, green, and blue
• Individual 8-bit Dot Current (DC) setting for
each LED dot
– PWM dimming with audible-noise-free
frequency
• Global 8-bit PWM dimming for all LED dots
• 3 programmable groups of 8-bit PWM
dimming for LED dot arbitrary mapping
• Individual 8-bit or 16-bit PWM dimming for
each LED dot
• Full addressable SRAM to minimize data traffic
• Individual LED dot open and short detection
• Deghosting and low brightness compensation
• Interface options:
– 1-MHz (max.) I2C interface when IFS = Low
– 12-MHz (max.) SPI interface when IFS = High

2 Applications
• LED animation and indication for:
– Major and smart home appliances
– Global RGB keyboard backlighting
– Outdoor keypad backlighting
– IR module for video surveillance and IP camera
– Laser diode in optical module

3 Description
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-noisefree
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 ghostcancellation
circuitry is integrated to eliminate both
upside and downside ghosting. The LP5861T also
supports LED open and short detection functions.
Both 1-MHz (maximum) I2C and 12-MHz (maximum)
SPI are available in LP5861T.