12-Channel RGB LED Driver with I2C Control

Features

  • Drives up to 12 LEDs (4 RGBs)
  • Multiplexed LED Current Driver Outputs
    • Only 4 PCB Traces to the LEDs
    • 23kHz MUX Frequency Prevents Audio Noise
  • 14 Million Colors
    • LED Current: 125μA to 24mA in 125μA Steps
    • Night-Mode: 8μA to 1.5mA in 8μA Steps
    • 5% Max. Current Accuracy & Matching
  • 12 Independent Exponential Fade-Engines
    • Ultra-Smooth 3072-Step Fade Resolution
    • 3-bit Programmable Fade Rate
    • Dramatically Reduces Software Complexity
  • Patented1 BrightExtend? Technology
    • Maintains Color-Accuracy and PSRR for Battery-Powered Applications with Low Vin
  • Proprietary CoolExtend? Technology
    • 2-bit Programmable Max. Die-Temp Regulation
  • 0.4μA Automatic Shutdown (Standby) Current
  • 1MHz I2C Interface with Multiple Slave Addresses
  • 2.5V to 5.5V Operating Supply Voltage Range
  • -40°C to 85°C Operating Temperature Range
  • 20 pin UQFN 3x3mm (0.4mm pitch)
1. US Patent 8,482,216 B1

Key Electrical Specifications

Vin (Min) Vin (Max) Vout (Min)? Vout (Max) Supply Current Standby Current Shutdown Current # of Channels Current per?Channel Operating Temperature Interface Package
2.7V 5.5V 2.5V 5.5V 1.6mA Typ. 0.3μA Typ. 0.3μA Typ. 12 24mA -40 to?85°C 1MHz I2C UQFN33-20

Applications

  • AI Smart Speakers, Bluetooth / WiFi Loudspeakers
  • Automotive Panel, Accent and Mood Lighting
  • IoT, Gaming PC/Keyboards/Controllers/VR, Robots

Typical Application Diagram