The WS2811 is a high-performance, low-power LED controller IC manufactured by Worldsemi. It is an MSOP8 package, and requires a 6 to 7V DC supply voltage for operation. The chip features an LED driver and a controller based on pulse width modulation (PWM) technology to enable dimming control of LEDs in a series-connected arrangement. It is ideally suited for applications where multiple colors of LEDs are used in series, such as LED lighting fixtures, LED decorative lighting, and illuminated signs. The WS2811 is designed to drive up to seven series-connected LEDs in a daisy-chain configuration. It provides excellent brightness and color control for each LED in the string, and is capable of handling a wide range of dimming and color-mixing schemes.