Mini backlight - WH3803D
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▪ Gray level 256 can be adjusted and scan frequency approaches 2KHz
▪ Built in signal reshaping circuit, after wave reshaping to the next driver, ensure wave-form distortion.
▪ Built-in electric reset circuit and power lost reset circuit.
▪ Cascading port transmission signal by single line.
- Model Number: WH3803D
- Data Sheet:
- Quantity:
- - +
Product Specification
The WH3803D is 3 output channels special for RGB LED driver circuit. It also include internal intelligent digital port data latch and signal reshaping amplification drive circuit. WH3803D use single NZR communication mode. After the chip power on reset, the DIN port receives 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 adopts 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 depends on the received 24 bit data produce different duty ratio signal at IO_R, IO_G, IO_B port. All chip synchronously 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 IO_R, IO_G, IO_B port unchanged. IC sends PWM data that received justly to IO_R, IO_G, IO_B port, after receiving a low voltage reset signal the time retains 24us at least.
FEATURES:
▪ Gray level 256 can be adjusted and scan frequency approaches 2KHz
▪ Built in signal reshaping circuit, after wave reshaping to the next driver, ensure wave-form distortion.
▪ Built-in electric reset circuit and power lost reset circuit.
▪ Cascading port transmission signal by single line.
▪ Any two point the distance more than 10m transmission signal without any increase circuit.
▪ When the refresh rate is 30fps, cascade numbers are not less than 1024 points.
▪ Send data at speeds of up to 800 Kbps.
▪ Support back-up mode function to avoid single failed pixel blocks following pixels.
APPLICATIONS:
▪ LED decorative lighting
▪ Indoor/outdoor LED video or irregular screen.
▪ Full color LED light strip
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