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Description

The WS2801SO 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. The WS2801ownes 3 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.

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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