Description

The KTD2064 is a fully programmable current regulator for up to 8 RGB LED modules (24 LEDs total). The device is ideally powered from a supply rail in the 3V to 5V nominal range. Two 4-wire buses are multiplexed to reduce the pin-count and PCB traces to the LEDs.

The I2C control interface is used to set the LED color palette and then dynamically select the on/off status and color of each RGB module. For applications requiring more RGBs, see the KTD2061/58/59/60.

24 independent fade-up/down engines are integrated for independent ramping of each LED’s current during on/off, brightness, and color transitions without software burden. The exponential current ramps provide visually pleasing fades with eight I2C programmable fade-rate settings. 3072-step fade resolution ensures ultra-smooth visual effects.

BrightExtend™ optionally reduces dropout when the input voltage is too low for the forward voltage of the LEDs, enabling battery-powered applications. Programmable CoolExtend™ prevents excessive heat by regulating die temperature when the input voltage, current settings, and/or ambient temperature are high.

The KTD2064 is packaged in RoHS and Green compliant 3mm x 3mm, ultra-thin, 20-pin UQFN package.

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)
  • RoHS and Green Compliant

Applications

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

Packaging Information

Package Dimensions Package Code
UQFN33-20 3mm x 3mm x 0.52mm UAC

Technical Documentation

Description Documents Type
DatasheetKTD2064-04cPDF
DatasheetKTD2064-04dPDF
Package Outline DrawingUQFN33-20 UAC PODPDF

Purchase

Purchase Options
Buy from Digi-Key
Buy from Mouser