I have a LED backlight driver, which has input pin assignment as:
1,2 12V Input
3 Brightness control PWM : 100Hz~20KHz DC : 0.5V~2.5V
5 ON/OFF Control 5V ON , 0V OFF
Why do pin 1 and 2 both require 12V input, what is the utility of that? Can somebody give insights on why didn't they use just one pin and give input internally using the same pin?
Link to the datasheet.