General description
Black WS2811
The WS2811 is 3 output channels special for LED driver circuit. Its internal includes intelligent digital port data latch
and signal reshaping amplification drive circuit. Also include a precision internal oscillator and a 12V voltage
programmable constant current output drive. In the purpose of reduce power supply ripple, the 3 output channels
designed to delay turn-on function.
IC use single NZR communication mode. After the chip power-on reset, the DIN port receive data from controller, the
first IC collect initial 24bit data then sent to the internal data latch, the other data which reshaping by the internal signal
reshaping amplification circuit sent to the next cascade IC through the DO port. After transmission for each chip, the
signal to reduce 24bit. IC adopt auto reshaping transmit technology, making the chip cascade number is not limited the
signal transmission, only depend on the speed of signal transmission.
The data latch of IC depend on the received 24bit data produce different duty ratio signal at OUTR, OUTG, OUTB
port. All chip synchronous send the received data to each segment when the DIN port input a reset signal. It will receive
new data again After the reset signal finished. Before a new reset signal received, the control signal of OUTR ,OUTG,
OUTB port unchanged. IC sent PWM data that received justly to OUTR, OUTG, OUTB port, after receive a low voltage
reset signal the time retain over 280μs.
We offer SOP8/FSOP8/DFN8 package.
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