LP5868 Series
8 × 18 LED matrix driver with 8-bit analog and 8-/16-bit PWM dimming
Manufacturer: Texas Instruments
Catalog
8 × 18 LED matrix driver with 8-bit analog and 8-/16-bit PWM dimming
Key Features
• LED matrix topology:18 constant current sinks with 8 scan switches for 144 LED dotsConfigurable for 1 to 8 scan switchesOperating voltage range:VCC/VLEDrange: 2.7 V to 5.5 VLogic pins compatible with 1.8 V, 3.3 V, and 5 V18 constant current sinks with high precision:0.1 mA–50 mA per current sink when VCC≥ 3.3 VDevice-to-device error: ±3% when channel current = 50 mAChannel-to-channel error: ±3% when channel current = 50 mAPhase-shift for balanced transient powerUltra-low power consumption:Shutdown mode: ICC≤ 1 uA when EN = LowStandby mode: ICC≤ 10 uA when EN = High and CHIP_EN = 0 (data retained)Active Mode: ICC= 4.3 mA (typ.) when channel current = 5 mAFlexible dimming options:Individual ON and OFF control for each LED dotAnalog dimming (current gain control)Global 3-bit Maximum Current (MC) setting for all LED dots3 groups of 7-bit Color Current (CC) setting for red, green, and blueIndividual 8-bit Dot Current (DC) setting for each LED dotPWM dimming with audible-noise-free frequencyGlobal 8-bit PWM dimming for all LED dots3 programmable groups of 8-bit PWM dimming for LED dot arbitrary mappingIndividual 8-bit or 16-bit PWM dimming for each LED dotFull addressable SRAM to minimize data trafficIndividual LED dot open and short detectionDeghosting and low brightness compensationInterface options:1-MHz (max.) I2C interface when IFS = Low12-MHz (max.) SPI interface when IFS = HighLED matrix topology:18 constant current sinks with 8 scan switches for 144 LED dotsConfigurable for 1 to 8 scan switchesOperating voltage range:VCC/VLEDrange: 2.7 V to 5.5 VLogic pins compatible with 1.8 V, 3.3 V, and 5 V18 constant current sinks with high precision:0.1 mA–50 mA per current sink when VCC≥ 3.3 VDevice-to-device error: ±3% when channel current = 50 mAChannel-to-channel error: ±3% when channel current = 50 mAPhase-shift for balanced transient powerUltra-low power consumption:Shutdown mode: ICC≤ 1 uA when EN = LowStandby mode: ICC≤ 10 uA when EN = High and CHIP_EN = 0 (data retained)Active Mode: ICC= 4.3 mA (typ.) when channel current = 5 mAFlexible dimming options:Individual ON and OFF control for each LED dotAnalog dimming (current gain control)Global 3-bit Maximum Current (MC) setting for all LED dots3 groups of 7-bit Color Current (CC) setting for red, green, and blueIndividual 8-bit Dot Current (DC) setting for each LED dotPWM dimming with audible-noise-free frequencyGlobal 8-bit PWM dimming for all LED dots3 programmable groups of 8-bit PWM dimming for LED dot arbitrary mappingIndividual 8-bit or 16-bit PWM dimming for each LED dotFull addressable SRAM to minimize data trafficIndividual LED dot open and short detectionDeghosting and low brightness compensationInterface options:1-MHz (max.) I2C interface when IFS = Low12-MHz (max.) SPI interface when IFS = High
Description
AI
Electronic devices are becoming smarter, requiring to use larger quantity of LEDs for animation and indication purposes. A 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 device 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 LP5868 integrates eight MOSFETs for up to 144 LED dots or 48 RGB LEDs.
The LP5868 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 LP5868 device implements full addressable SRAM to minimize the data traffic. The ghost-cancellation circuitry is integrated to eliminate both upside and downside ghosting. The LP5868 also supports LED open and short detection functions. Both 1-MHz (maximum) I2C and 12-MHz (maximum) SPI are available in LP5868.
Electronic devices are becoming smarter, requiring to use larger quantity of LEDs for animation and indication purposes. A 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 device 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 LP5868 integrates eight MOSFETs for up to 144 LED dots or 48 RGB LEDs.
The LP5868 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 LP5868 device implements full addressable SRAM to minimize the data traffic. The ghost-cancellation circuitry is integrated to eliminate both upside and downside ghosting. The LP5868 also supports LED open and short detection functions. Both 1-MHz (maximum) I2C and 12-MHz (maximum) SPI are available in LP5868.
