LED driver 3 outputs 5-150 mA constant current, PWM regulation 256 gray levels, control 2-wire SPI

Download datasheet: WS2801

Applications

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

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