Adafruit Industries 2351

SK9822 is an LED light source controller integrating a two-wire transmission three-channel (RGB) intelligent control circuit with a light-emitting circuit. The product incorporates a signal decoding module, data buffer, built-in constant current circuit, and RC oscillator. Manufactured using CMOS technology, it features low voltage and low power consumption. It supports 256-level grayscale PWM adjustment and 32-level brightness adjustment. Dual output is adopted with synchronized data and CLK signals, enabling synchronized cascaded output operation across all ICs. The top-mount SMD package integrates a high-quality externally controlled serial cascaded constant current IC, suitable for 5V applications with default-on behavior at power-up. The control circuit and RGB chip are integrated in an SMD 5050 component to form a complete control pixel with uniform and consistent color mixing. Features include two-wire synchronous control, RGB three-output control with 8-bit (256-level) color, 5-bit (32-level) brightness adjustment, three-channel constant current drive with dedicated signal self-detection, maximum serial data input frequency of 30MHz, and dual data transmission with built-in uninterrupted oscillating PWM output to maintain static images.

• Serial data structure: start frame 32-bit, LED frame 32-bit, end frame 32-bit
• 256-level grayscale
• PWM input/output signal relationship
• 5-bit (32-level) brightness adjustment (simultaneously controls OUTR, OUTG, OUTB port currents)
• Refresh rate: frame rate (= 1/(64 + (32 × number of dots)) × CKI (period), unit: frames/sec; e.g., 1024 dots at CKI frequency of 1MHz, frame rate = 30 frames/sec

• Full-color LED string lights
• LED full-color modules
• LED rigid and flexible strip lights
• LED guardrail tubes
• LED architectural/landscape lighting