The D26 is mainly used for RGB LED driving. The chip integrates a signal decoding module, PWM brightness adjustment circuit, and data forwarding module. Through the input interface (DIN), the chip can achieve single-wire control of LED strings (a single D26 can control up to 12 RGB LEDs, and there is no RGB quantity limit in cascade applications). When multiple D26 chips are cascaded, data is forwarded to the next-level D26 through the output interface DO, meeting the needs of more application scenarios. It features a simple interface, minimal external components, and reliable functionality, making it suitable for LED decorative products such as mice, keyboards, and LED strips.