LP5861T Series

18-channel high-current RGB LED driver with 8-bit analog and 8-bit or 16-bit PWM dimming

Catalog

18-channel high-current RGB LED driver with 8-bit analog and 8-bit or 16-bit PWM dimming

Part	Applications	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Dimming	Topology	Voltage - Output [Max]	Voltage - Output [Min]	Type	Internal Switch(s)	Number of Outputs	Supplier Device Package	Voltage - Supply (Min) [Min]	Frequency	Package / Case	Voltage - Supply (Max)
Texas Instruments LP5861TMRSMR	Backlight Camera Flash	Surface Mount	125 °C	-55 °C	Analog I2C PWM SPI	Constant Current	5.5 V	2.5 V	Linear		18	32-VQFN (4x4)	2.5 V	31.2 MHz	32-VFQFN Exposed Pad	5.5 V

Catalog

18-channel high-current RGB LED driver with 8-bit analog and 8-bit or 16-bit PWM dimming

Key Features

• Operating voltage range:V CC/V LED range: 2.7 V to 5.5 VLogic pins compatible with 1.8 V, 3.3 V, and 5 V18 high current and precision constant current sinks:125-mA per current sink when V CC ≥ 3.3 VDevice-to-device error: ±5%Channel-to-channel error: ±5%Phase-shift for balanced transient powerUltra-low power consumption:Shutdown mode: I CC ≤ 2 µA when EN = LowStandby mode: I CC ≤ 10 µA when EN = High and CHIP_EN = 0 (data retained)Active mode: I CC = 5 mA (typical) when channel current = 12.5 mAFlexible dimming options:Individual ON/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.) I 2C interface when IFS = Low12-MHz (max.) SPI interface when IFS = HighOperating voltage range:V CC/V LED range: 2.7 V to 5.5 VLogic pins compatible with 1.8 V, 3.3 V, and 5 V18 high current and precision constant current sinks:125-mA per current sink when V CC ≥ 3.3 VDevice-to-device error: ±5%Channel-to-channel error: ±5%Phase-shift for balanced transient powerUltra-low power consumption:Shutdown mode: I CC ≤ 2 µA when EN = LowStandby mode: I CC ≤ 10 µA when EN = High and CHIP_EN = 0 (data retained)Active mode: I CC = 5 mA (typical) when channel current = 12.5 mAFlexible dimming options:Individual ON/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.) I 2C interface when IFS = Low12-MHz (max.) SPI interface when IFS = High

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-noise-free 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 ghost-cancellation circuitry is integrated to eliminate both upside and downside ghosting. The LP5861T also supports LED open and short detection functions. Both 1-MHz (maximum) I 2C and 12-MHz (maximum) SPI are available in LP5861T. 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-noise-free 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 ghost-cancellation circuitry is integrated to eliminate both upside and downside ghosting. The LP5861T also supports LED open and short detection functions. Both 1-MHz (maximum) I 2C and 12-MHz (maximum) SPI are available in LP5861T.