WS2801 IC

You may recognize the WS2801from our addressable RGB LED strips. These 3-channel constant current LED drivers are great for controlling chains of RGB LEDs. The IC is controlled by a 2-wire serial control scheme that allows multiple ICs to be chained together.

Use a handful of these ICs in conjunction with some RGB LEDs to make color displays, or with regular LEDs for a monochrome display three times the size. Or just the WS2801 to free up PWM pins on your microntroller by controlling multiple LEDs with two pins.

Features:

• 2-wire control scheme reduces system cost
• Built-in PWM dimming scheme for each channel
• PWM free-run capability
• Power supply voltage 3.3-5.5v
• Supports both constant current and constant voltage drive modes
• Wide constant current range from 5-150mA

Documents:

• Datasheet (WS2801)

• Comparative - The Light-Emitting Diode (LED)