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On-Demand Webinar:

Multi-Channel Linear RGB Drivers

Multi-Channel Linear RGB drivers offer benefits like precise color mixing, uniform color distribution, wider color depth, and a large dynamic range of brightness, making them suitable for applications requiring complex color control and high-quality lighting. It also provides a simple design without the use of inductors that save eBOM cost and minimize EMI/EMC.




Originally presented: May 23, 2025
Duration: 1 hour
Presented by:

Overview

Attend this webinar to discover the benefits offered by multi-channel linear RGB drivers, such as precise color mixing, uniform color distribution, wider color depth, and a large dynamic range of brightness, making them suitable for applications requiring complex color control and high-quality lighting. The technology provides a simple design without the use of inductors that save eBOM cost and minimize EMI/EMC.

This group of linear RGB drivers have programmable registers with digital I2C/SPI interface. Built-in registers have three RGB banks (A, B, C) for software control of each color and enable easy device customization. We’ll explain how these features provide independent color-mixing per channel and an independent 6-bit brightness control register per RGB module.

Other key performance enhancements of interest include 3-bit dithering function to enhance PWM dimming resolution, diagnostic fault registers with a fault flag pin, individual fault mask registers, shutdown mode of 1µA current (max) and automatic power-saving mode of 15µA (max) when all LEDs are off for >30ms.

Key Takeaways

  • Learn about the diagnosis and protection functions included with fault flag pin
  • Discover how these RGB drivers enable deep PWM dimming resolution to 0.0244% 
  • Apply these units to support high current up to 70mA max per channel
  • Explore the merits of the 3-bit dither function and dual I2C/SPI interface
  • Effectively support Vio pin to sync with the MCU power rail

Speaker

Peter Chan, LED Applications Engineer, Diodes Incorporated

Peter Chan has over 10 years of LED applications experience working with automotive lighting. He reviews customers’ schematics and provides feedback to optimize the performance of their lighting module design.