LP5811 Series

Synchronous boost 4-channel RGBW LED driver with I2C and auto animation control

Catalog

Synchronous boost 4-channel RGBW LED driver with I2C and auto animation control

Part	Voltage - Supply (Min) [Min]	Current - Output / Channel	Operating Temperature [Max]	Operating Temperature [Min]	Type	Applications	Supplier Device Package [x]	Supplier Device Package [y]	Supplier Device Package	Dimming	Voltage - Supply (Max)	Topology	Mounting Type	Voltage - Output [Max]	Voltage - Output [Min]	Frequency	Package / Case	Number of Outputs
Texas Instruments LP5811AYBHR	500 mV	1.6 A	85 °C	-40 °C	DC DC Regulator	General Purpose	1.84	1.43	12-DSBGA	Analog PWM	5.5 V	Step-Up (Boost)	Surface Mount	5.5 V	3 V	1 MHz 500 kHz	12-BGA DSBGA	4
Texas Instruments LP5811DYBHR	500 mV	1.6 A	85 °C	-40 °C	DC DC Regulator	General Purpose	1.84	1.43	12-DSBGA	Analog PWM	5.5 V	Step-Up (Boost)	Surface Mount	5.5 V	3 V	1 MHz 500 kHz	12-BGA DSBGA	4
Texas Instruments LP5811CDRRR	500 mV	1.6 A 51 mA	85 °C	-40 °C	DC DC Regulator	General Purpose			12-WSON (3x3)	Analog PWM	5.5 V	Step-Up (Boost)	Surface Mount	5.5 V	3 V	1 MHz 500 kHz	12-WFDFN Exposed Pad	4

Catalog

Synchronous boost 4-channel RGBW LED driver with I2C and auto animation control

Key Features

• Operating voltage range:Input voltage (VIN) range: 0.5V to 5.5V1.8V minimum input voltage for start-upLogic pins compatible with 1.8V, 3.3V, and 5VHigh efficiency synchronous boost converterOutput voltage (VOUT) range: 3V to 5.5V140mΩ (HS) / 60mΩ (LS) MOSFETs1.6A valley switching current limit95% efficiency at VIN = 4.2V, VOUT = 5.0V, IOUT = 300mAPass-through mode when VIN > VOUT settingTrue disconnection between input and output during shutdown4 constant current sinks with high precision:0.1mA to 51mA per current sinkDevice-to-device error: max ±5%Channel-to-channel error: max ±5%Ultra-low headroom voltage: 110mV (typ.) at 25.5mA; 210mV (typ.) at 51mAPWM phase shift configurable for each LEDUltra-low power consumption:Shutdown: ISD = 0.1µA (typical) when EN = LowStandby: ISTB = 26µA (typical) when EN = High and CHIP_EN = 0 (data retained)Active: INOR = 0.45mA (typical) when LED current = 25.5mAAnalog dimming (current gain control)Global 1-bit Maximum Current (MC): 25.5mA or 51mAIndividual 8-bit Dot Current (DC) settingPWM dimming up to audible-noise-free 24kHzIndividual 8-bit PWM dimming resolutionLinear or exponential dimming curvesAutonomous animation engine controlIndividual LED dot open/short detectionIntegrated de-ghosting function1MHz (max.) I2C interface–40°C to 85°C operating temperature rangeOperating voltage range:Input voltage (VIN) range: 0.5V to 5.5V1.8V minimum input voltage for start-upLogic pins compatible with 1.8V, 3.3V, and 5VHigh efficiency synchronous boost converterOutput voltage (VOUT) range: 3V to 5.5V140mΩ (HS) / 60mΩ (LS) MOSFETs1.6A valley switching current limit95% efficiency at VIN = 4.2V, VOUT = 5.0V, IOUT = 300mAPass-through mode when VIN > VOUT settingTrue disconnection between input and output during shutdown4 constant current sinks with high precision:0.1mA to 51mA per current sinkDevice-to-device error: max ±5%Channel-to-channel error: max ±5%Ultra-low headroom voltage: 110mV (typ.) at 25.5mA; 210mV (typ.) at 51mAPWM phase shift configurable for each LEDUltra-low power consumption:Shutdown: ISD = 0.1µA (typical) when EN = LowStandby: ISTB = 26µA (typical) when EN = High and CHIP_EN = 0 (data retained)Active: INOR = 0.45mA (typical) when LED current = 25.5mAAnalog dimming (current gain control)Global 1-bit Maximum Current (MC): 25.5mA or 51mAIndividual 8-bit Dot Current (DC) settingPWM dimming up to audible-noise-free 24kHzIndividual 8-bit PWM dimming resolutionLinear or exponential dimming curvesAutonomous animation engine controlIndividual LED dot open/short detectionIntegrated de-ghosting function1MHz (max.) I2C interface–40°C to 85°C operating temperature range

Description

The LP5811 is a synchronous boost 4-channel RGBW LED driver with autonomous animation engine control. The device is ideal to support battery-powered applications with 0.5V to 5.5V input voltage range, and it has ultra-low normal operation current with 0.4mA (typical) when illuminate LEDs. The integrated synchronous boost converter maintains excellent efficiency and keeps the brightness of LEDs stable over a wide operating voltage range. Output voltage can be selected for different LED forward voltage from 3V to 5.5V with 0.1V step. The boost converter can power not only the LEDs driven by the device itself, but also other loads in the system. If the boost converter need to be bypassed, VOUT is used as the power supply input for the LED driver blocks. Both analog dimming and PWM dimming methods are adopted to achieve powerful dimming performance. The output current of each LED can be adjusted with 256 steps from 0.1mA to 25.5mA or 0.2mA to 51mA. The 8-bit PWM generator enables smooth and audible-noise-free dimming control for LED brightness. The autonomous animation engine can significantly reduce the real-time loading of controller. Each LED can be configured through the related registers to realize vivid and fancy lighting effects. The device can generate 6MHz clock signal and use it for synchronizing the lighting effects among multiple devices. The LP5811 is a synchronous boost 4-channel RGBW LED driver with autonomous animation engine control. The device is ideal to support battery-powered applications with 0.5V to 5.5V input voltage range, and it has ultra-low normal operation current with 0.4mA (typical) when illuminate LEDs. The integrated synchronous boost converter maintains excellent efficiency and keeps the brightness of LEDs stable over a wide operating voltage range. Output voltage can be selected for different LED forward voltage from 3V to 5.5V with 0.1V step. The boost converter can power not only the LEDs driven by the device itself, but also other loads in the system. If the boost converter need to be bypassed, VOUT is used as the power supply input for the LED driver blocks. Both analog dimming and PWM dimming methods are adopted to achieve powerful dimming performance. The output current of each LED can be adjusted with 256 steps from 0.1mA to 25.5mA or 0.2mA to 51mA. The 8-bit PWM generator enables smooth and audible-noise-free dimming control for LED brightness. The autonomous animation engine can significantly reduce the real-time loading of controller. Each LED can be configured through the related registers to realize vivid and fancy lighting effects. The device can generate 6MHz clock signal and use it for synchronizing the lighting effects among multiple devices.