[Worldsemi]

General Description
The WS2801 is a constant current LED driver. It is designed for indoor/ outdoor LED displays and decorative LED lighting system. It is suitable for LED cascading applications.

FEATUREs
• Supports both constant voltage and constant current drive mode
• Programmable constant LED drive current
• Wide constant output current range 5~150mA
• Build in PWM dimming scheme for each output channel,
   supports free-run, especially suitable for low cost controller
   application
• PWM free-run capability(refresh rate(2.5KHz)
• Build in buffers to cascading data and clock to the next driver
• Output polarity reverse function
• Support hot swap
• Maximum input clock frequency 25MHz
• Power supply voltage 3.3~5.5V

APPLICATIONs
• LED decorative lighting
• Indoor/Outdoor LED video or massage display
• PWM signal generator
• LCD TV back lighting