AS3824
Description
The AS3824 is a 16 channel high precision LED controller for use in LCD-backlight panels.
Key Features
- Supports all LED backlight topologies x No limit of VLED or ILED, device is not exposed to high voltage/high current
- Optimum power savings through local dimming x 16 fully flexible 12 bit PWM generators (period, high time, delay, reverse)
- One global highly accurate 10 bit DAC which sets the LED current (±0.5% accuracy)
- High dynamic range boost function x 16 independent 8 bit DACs can be used to boost/ decrease LED current within certain frames
- VSYNC and HSYNC inputs, as well as integrated digital PLL for synchronization with TV frame
- Lowest BOM x Due to 2 pin concept of the output channel: no HV protection, no cascade FETs
- Short/OPEN LED detection, temperature shutdown, register lock/unlock, SPI transfer checksum
