Worldsemi WS2803
The WS2803 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 Constant output current range -5-30mA@5V supply voltage -5-20mA@3.3V supply voltage●18 constant current driving channels
● 30V high voltage output channels
● 8bit PWM gray level control
● Precision output driving current Between channels in a chip: ±2 % Between chips: ±4%
● Maximum clock frequency up to 25MHz.
● Free run ability
● Over temperature protection
GENERAL DESCRIPTION
APPLICATIONS
WS2803 18-Channel Constant Current LED Driver With Programmable PWM Outputs● LED decorative lighting
● Indoor/Outdoor LED video or massage display The WS2803 is a constant current LED driver. It is suitable for LED cascading applications. The WS2803 ownes 18 output channels, each channel can drive a constant current up to 30mA. WS2081 contains serial shift registers, data latches, output registers, band gap reference voltage generator, internal oscillator, and programmable constant output current drivers. The serial data is read into the shift registers at the rise edge of the external clock.