Kinetic Technologies‘s Programmable RGB LED Driver KTD2052B with AutoBreathe™, Reduces System Size and Simplifies Software Development

PublishTime： 2023-11-26 Article Source：Kinetic Technologies News

KTD2052B: 12-Channel RGB LED Driver with I²C Control and integral fade-engines

Power management and video/audio interface leader, Kinetic Technologies, is adding to its innovative line of RGB LED drivers with the introduction of the KTD2052B a 12-channel fully programmable current regulator capable of driving up to four RGB LEDs with fewer PCB traces. Packaged in a tiny 8-pin UDFN package, the KTD2052B is 2x smaller than competing products.

“The KTD2052B is ideal for driving up to 4 RGB LEDs in AI Speakers, IoT, Gaming Controllers, or VR Headsets”, says Jia Hu, Kinetic Technologies’ Senior Director of ESIA Product Marketing. “Using multiplexing techniques, the number of PCB traces can be reduced by a factor of 3, significantly reducing the solution size over competing solutions. To help simplify software design and to reduce the burden on system resources, a flexible pattern generator allows set-and-forget autonomous useful patterns. In systems with long boot times, or long periods of inactivity, the RGB LEDs will ‘AutoBreathe’ blue light, showing the user the system is alive”.

Programmed by a 1MHz, I²C serial interface, the KTD2052B has an integrated pattern/animation engine that controls 12 independent current sinks with, in NORMAL-mode, up to 24mA/LED in 125µA steps and in NIGHT-mode, up to 1.5mA/LED in 8µA steps. A 3-bit programmable fade-rate with ultra-smooth 8µA steps is also included. Optimized for the lowest power consumption, the KTD2052B also includes Kinetic’s patented BrightExtend™ and CoolExtend™ technologies preserving color balance and the ability to maintain light output at high operating temperatures. In case of LED failure (Shorts, Open, Dropout) additional protection and monitoring functions are included.

Key applications for the new KTD2052B include AI speakers, Bluetooth Loudspeakers/WiFi Loudspeakers, automotive indicator and ambiance lighting, IoT, gaming consoles and controllers, toys, and indicator illumination/button illumination.

The KTD2052B is available with an alternative I²C address option to double the number of RGBs in a system and is available without AutoBreathe.

Product Features Include:

2.5V to 5.5V Operating Supply Voltage Range

Drives up to 12 LEDs (4 RGBs)

Multiplexed LED Current Driver Outputs

- Only 4 PCB Traces to the LEDs

- 20.8kHz 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

12 Independent Exponential Fade-Engines

- Ultra-Smooth 3072-Step (8μA) Fade Resolution

- 3-bit Programmable Fade-Rate

Flexible Pattern Generator with Watchdog Counter

AutoBreathe Mode (KTD2052B/D)

Patented BrightExtend Technology

- Maintains Color-Accuracy and PSRR for Battery-Powered Applications with Low Vin

Proprietary CoolExtend Technology

- 2-bit Programmable Maximum Die-Temp

0.6μA Automatic Shutdown (Standby) Current

1MHz I²C Serial Interface with Alternative I²C Addresses

Pb free, RoHS and Green Compliant 8-pin UDFN 2x2mm (0.5mm pitch) package

-40°C to +85°C Operating Temperature Range

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