36-Channel RGB LED Driver with I2C Control

Features

  • Drives up to 36 LEDs (12 RGBs)
  • Multiplexed LED Current Driver Outputs
    • Only 12 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
  • 36 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
KTD2061 36-Channel RGB LED Driver with I2C Control 0x68 default
KTD2060 36-Channel RGB LED Driver with I2C Control 0x68B alternative
KTD2059 36-Channel RGB LED Driver with I2C Control 0x68A alternative
KTD2058 36-Channel RGB LED Driver with I2C Control 0x69 alternative

Key Electrical Specifications

Vin (Min) Vin (Max) Vout (Min)? Vout (Max) Supply Current Standby Current Shutdown Current LED Channels Current per?Channel Operating Temperature Interface Package
2.5V 5.5V 2.5V 5.5V 1.6mA Typ. 0.3μA Typ. 0.3μA Typ. 36 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