LP5861 18-Channel LED Driver With 8-Bit Analog and 8-/16-Bit PWM Dimming

1 Features

Operating voltage range:
- V_CC/V_LED range: 2.7 V to 5.5 V
- Logic pins compatible with 1.8 V, 3.3 V, and 5 V
18 constant current sinks with high precision:
- 0.1 mA–50 mA per current sink when V_CC ≥ 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: I_CC ≤ 2 uA when EN = Low
- Standby mode: I_CC ≤ 10 uA when EN = High and CHIP_EN = 0 (data retained)
- Active mode: I_CC = 3 mA (typ.) when channel current = 5 mA
Flexible dimming options:
- Individual ON and 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