Texas Instruments LP5815 3-Channel I2C Interface RGBW LED Driver
Texas Instruments LP5815 3-Channel I2C Interface RGBW LED Driver has an autonomous animation engine control and a controllable Instant Blinking feature. The device has an ultra-low operation current of 0.1µA (typ.) in shutdown mode, 0.1mA (typ.) when enabling the device, and 0.2mA (typ.) when illuminating LEDs.
The Texas Instruments LP5815 uses analog and PWM dimming methods to achieve powerful performance. The output current of each LED can be adjusted in 256 steps from 0.1mA to 25.5mA or 0.2mA to 51mA. The 8-bit PWM generator enables audible-noise-free and smooth dimming control for LED brightness.
The autonomous animation engine can significantly reduce the controller's real-time loading. The related registers allow each LED to be configured to realize vivid and fancy lighting effects. The Instant Blinking via STAT pin control feature can provide automatic blinking on the OUT0 channel without I2C communication after powering up.
Features
- Operating voltage range
- VCC range of 2.5V to 5.5V
- Logic pins compatible with 1.8V, 3.3V, and 5V
- Output voltage up to 5.5V
- Three constant current sinks with high precision
- 0.1mA to 51mA per channel
- Device-to-device error: ±8% (max.)
- Channel-to-channel error: ±3% (max.)
- Ultra-low headroom voltage: 135mV (max.) at 25.5mA; 275mV (max.) at 51mA
- Ultra-low power consumption
- Shutdown: ISD = 0.1µA (typ.)
- Standby: ISTB = 22µA (typ.)
- Active:
- INOR = 0.15mA(typ.), when disable output channel
- INOR = 0.23mA(typ.), LED current = 25.5mA
- Analog dimming (current gain control)
- Global 1-bit Maximum Current (MC) 25.5mA/51mA
- Individual 8-bit Dot Current (DC) setting
- PWM dimming up to audible-noise-free 23kHz
- Individual 8-bit PWM dimming resolution
- Linear or exponential dimming curves
- Autonomous animation engine control
- Instant blinking via STAT pin control
- 1MHz (max.) I2C interface
- ESD (4kV HBM, 1.5kV CDM)
- Package options
- 1.6mm x 2.1mm SOT583-8, 0.5mm pitch
- 1.36mm x 0.8mm DSBGA-8, 0.35mm pitch
- –40°C to 125°C operating temperature range
Applications
- Personal electronics
- Virtual Reality (VR) headset
- Gaming controller and peripherals
- Electronic and robotic toys
- Smart speaker
- Wireless speaker
- Solid State Drive (SSD)
- Electronic smart lock
- Headsets/headphones and earbuds
- GPS personal navigation device
- WLAN/Wi-Fi access point
- Video doorbell
- Video conference system
Functional Block Diagram
Evaluation Modules
Texas Instruments LP5814/5DRLEVM Evaluation Modules
Designed to aid users in the development of the LP5814, LP5814I, LP5816, LP5815, & LP5817 drivers.