KTD2052 2 12-Channel RGB LED Drivers with I C Control Features Brief Description The KTD2052 is a fully programmable current regulator Drives up to 12 LEDs (4 RGBs) for up to four RGB LEDs (12 LEDs total). The device is Multiplexed LED Current Driver Outputs ideally powered from a supply rail in the 3V to 5V Only 4 PCB Traces to the LEDs nominal range. A 4-wire bus is multiplexed to reduce 20.8kHz MUX Frequency Prevents Audio Noise the pin-count and PCB traces to the LEDs. Each pin 14 Million Colors on the bus integrates a switch to the input voltage and LED Current: 125A to 24mA in 125A Steps a programmable low-dropout current sink regulator. Night-Mode: 8A to 1.5mA in 8A Steps 5% Max. Current Accuracy & Matching There are four versions: the KTD2052A/C are 12 Independent Exponential Fade-Engines defaulted disabled at initial power-up, while the Ultra-Smooth 3072-Step (8A) Fade Resolution KTD2052B/D execute an AutoBreathe pattern by 3-bit Programmable Fade-Rate default at initial power-up or when reset. The 2 Flexible Pattern Generator with Watchdog Counter KTD2052A/B use 0x74 7-bit I C slave address, while the KTD2052C/D use 0x75. See the Ordering Optional AutoBreathe Mode (KTD2052B/D) 1 Information section. Patented BrightExtend Technology Maintains Color-Accuracy and PSRR for Battery- 2 The I C control interface is used to set the on/off status Powered Applications with Low Vin and individual LED currents, as well as adjust the fade- Proprietary CoolExtend Technology rate. An internal flexible pattern generator with 2-bit Programmable Maximum Die-Temp watchdog counter enables set-and-forget pattern 0.6A Automatic Shutdown (Standby) Current executions, while more complex patterns may be 2 2 1MHz I C Serial Interface executed from system firmware via the I C interface. 2.5V to 5.5V Operating Supply Voltage Range BrightExtend optionally reduces dropout when the -40C to +85C Operating Temperature Range input voltage is too low for the forward voltage of the 8 pin UDFN 2x2mm (0.5mm pitch) LEDs. Programmable CoolExtend prevents excessive heat when the input voltage, current settings, Applications and ambient temperature are high. AI Smart Speakers, Bluetooth / WiFi Loudspeakers The KTD2052 is packaged in RoHS and Green Automotive Indicator and Ambiance Lighting compliant 2mm x 2mm UDFN package. IoT, Gaming, Toys, Indicator / Button Lighting Typical Application 1. US Patent 8,482,216 B1 October 2021 - Revision 04b Page 1 of 29 Kinetic Technologies Confidential WWYYZ KTD2052 Pin Description Pin Name Function Voltage Input to the LEDs and Supply Input for the IC connect to a voltage source capable of 8 VIN supporting the maximum LED Vf and maximum current setting in the application. Connect a 10F capacitor from VIN to GND. Ground connect to the PCB ground plane using multiple vias. Connect to the exposed paddle 7 GND directly under the IC. 2 1 SCL I C Serial Interface Clock 2 2 SDA I C Serial Interface Data 6 LED1 LED connection bus, wire 1 5 LED2 LED connection bus, wire 2 4 LED3 LED connection bus, wire 3 3 LED4 LED connection bus, wire 4 Exposed Paddle -- connect to the GND pin directly under the IC and to the PCB ground plane using -- EP multiple vias directly under the IC. Pinout Diagram UDFN22-8 Top View Top View SCL 1 8 VIN 2 7 SDA GND Exposed Paddle 3 6 LED4 LED1 LED3 4 5 LED2 8-Pin 2mm x 2mm x 0.53mm UDFN Package, 0.5mm pitch Top Mark WW = Device ID Code, YYZ = Date Code & Assembly Code October 2021 - Revision 04b Page 2 of 29 Kinetic Technologies Confidential