Description
The 2811 is a three-output channel LED driver circuit. Internally, it has a signal reshaping amplification driving circuit and an intelligent digital port data latch. A precise internal oscillator is also included, as well as a 12V voltage configurable constant current output drive. For the purpose of reducing power supply ripple, the 3 output channels are designed to delay turn-on function.
A single NZR communication mode is used by the IC. Following the chip's power-on reset, the DIN port receives data from the controller, the first IC collects the initial 24bit data and sends it to the internal data latch, while the other data is reshaped by the internal signal reshaping amplification circuit and sent to the next cascade IC via the DO port. The signal is reduced by 24 bits after transmission for each chip.
The chip cascade number is not limited by signal transmission because of auto reshaping transmit technology; it only depends on the signal transmission speed.
The data latch of the WS2811 IC produces various duty ratio signals at the OUTR, OUTG, and OUTB ports depending on the received 24bit data. When the DIN port inputs a reset signal, all chips synchronously send the incoming data to each segment. It will be updated with fresh information. Following the completion of the reset signal. The control signals of the OUTR, OUTG and OUTB ports were unaltered before a fresh reset signal was received. After receiving a low voltage reset signal, the WS2811 IC supplied PWM data to the OUTR, OUTG, and OUTB ports, and the time retained was above 50us.
Features
- Output port compression 12V.
- Built-in stabilivolt, Only add resistance to IC VDD feet when under 24V power supply.
- Gray level 256 can be adjusted and scan frequency not less than 400Hz/s.
- Built-in signal reshaping circuit, after wave reshaping to the next driver, ensure wave-form distortion does not accumulate.
- Built-in electric reset circuit and power lost reset
- circuit.
- Cascading port transmission signal by a single line.
- When the refresh rate is 30fps, low-speed model cascade numbers are not less than 512 points, the high-speed mode is not less than1024 points.
- Send data at speeds of up to 400 Kbps and 800 Kbps two patterns.
Specifications
| Operating Voltage | 12V DC |
| Max. Operating Current | ~50mA |
| Colour Control | 24-bit |
| Length | 5 meter |
| LEDs per Meter | 60 |
| Max. Power | 18W |
| Model | CC2811 |
| Protection | IP20 |
| Country of Origin | China |