TI LP5860RKPR

Electronic devices are becoming increasingly intelligent and require more LEDs to provide animation effects and indication functions. Therefore, high-performance LED matrix drivers are needed to improve the user experience with a small form-factor solution. The LP586x devices are a series of high-performance LED matrix drivers. This series of devices integrates 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, thus supporting 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 in 256 steps. For PWM dimming, the integrated 8-bit or 16-bit configurable PWM generator enables smooth and inaudible dimming control. Each LED dot can also be arbitrarily mapped to an 8-bit group PWM for common dimming control. The LP5860 device implements a complete addressable SRAM to minimize data traffic. A ghosting elimination circuit is integrated to eliminate upper and lower ghosting. The LP5860 also supports LED open and short-circuit detection functions. The LP5860 supports both 1MHz (max) I²C and 12MHz (max) SPI.

• LED matrix topology: 18 constant-current sinks with 11 scan switches, supporting 198 LED dots, configurable for 1 to 11 scan switches
• Operating voltage range: VCC/VLED range: 2.7V to 5.5V, logic pins compatible with 1.8V, 3.3V, and 5V
• 18 high-accuracy constant-current sinks:
  • Current per sink: 0.1mA–50mA when VCC ≥ 3.3V
  • Device-to-device error: ±3% at channel current = 50mA
  • Channel-to-channel error: ±3% at channel current = 50mA
  • Phase shift for transient power balancing
• Ultra-low power consumption:
  • Shutdown mode: ICC ≤ 1μA when EN is low
  • Standby mode: ICC ≤ 10μA when EN is high and CHIP_EN = 0 (data retained)
  • Active mode: ICC = 4.3mA (typical) at channel current = 5mA
• Flexible dimming options:
  • Individual on/off control per LED dot
  • Analog dimming (current gain control)
  • Global 3-bit maximum current (MC) setting for all LED dots
  • Three groups of 7-bit color current (CC) settings for red, green, and blue
  • Individual 8-bit dot current (DC) setting per LED dot
  • PWM dimming at inaudible frequency
  • Global 8-bit PWM dimming for all LED dots
  • Three groups of programmable 8-bit PWM dimming with arbitrary LED dot mapping
  • Individual 8-bit or 16-bit PWM dimming per LED dot
• Fully addressable SRAM for minimized data traffic
• Open/short-circuit detection per individual LED dot
• Ghost elimination and low-grayscale compensation
• Interface options:
  • I²C interface up to 1MHz when IFS is low
  • SPI interface up to 12MHz when IFS is high

• LED animations and indicators for:
  • Keyboards, mice, and gaming accessories
  • Large and smart home appliances
  • Smart speakers, wired and wireless speakers
  • Mixers, DJ equipment, and broadcast devices
  • Access devices, switches, and servers
• Constant current sink for optical modules