AS3824 Overview
The AS3824 is a 16 channel high precision LED controller for use in LCD-backlight panels. Dynamic power feedback controls the external power supply to guarantee best efficiency. One high accurate global 10 bit DAC can be used to set the LED current as well as each channel has its own additional 8 bit DAC to boost the dynamic range of LED Backlight systems.
AS3824 Key Features
- Supports all LED backlight topologies
- Optimum power savings through local dimming
- One global highly accurate 10 bit DAC which sets the LED current (±0.5% accuracy)
- High dynamic range boost function
- Global dimming mode option
- VSYNC and HSYNC inputs, as well as integrated digital PLL for synchronization with TV frame
- Lowest BOM
- Feedback function is patible to every DC-DC architecture and configurable via SPI
- Short/OPEN LED detection, temperature shutdown, register lock/unlock, SPI transfer checksum
