24-Channel RGB LED Driver with I2C Control

Features

  • Drives up to 24 LEDs (8 RGBs)
  • Multiplexed LED Current Driver Outputs
    • Only 8 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
  • 24 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

I2C Slave Address

Part Number Description I2C Slave Address
KTD2064A 24-Channel RGB LED Driver with I2C Control 0x6C alternative
KTD2064B 24-Channel RGB LED Driver with I2C Control 0x6D alternative

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. 24 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