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Texas Instruments LP5817 3-Channel RGB LED Driver

Texas Instruments LP5817 3-Channel RGB LED Driver has an ultra-low operation current of 0.1µA (typ.) in shutdown mode, 0.15mA (typ.) when enabling the device, and 0.2mA (typ.) when illuminating LEDs. The Texas Instruments LP5817 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.

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 or 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
  • 400kHz (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

Block Diagram - Texas Instruments LP5817 3-Channel RGB LED Driver

Evaluation Modules

Texas Instruments LP5814/5DRLEVM Evaluation Modules

Designed to aid users in the development of the LP5814, LP5814I, LP5816, LP5815, & LP5817 drivers.

Learn Moreacerca de Texas Instruments LP5814/5DRLEVM Evaluation Modules View Productsrelacionado con Texas Instruments LP5814/5DRLEVM Evaluation Modules
Publicado: 2025-05-13 | Actualizado: 2025-05-29