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

Brief 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.