# Utility of two pins requiring same voltage

I have a LED backlight driver, which has input pin assignment as:

Pin Function

1,2 12V Input

3 Brightness control PWM : 100Hz~20KHz DC : 0.5V~2.5V

4,6 GND

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?

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What you say abiut sharing current is true in cases like the cpu power in a pc where up to 8 separate wires are used but in this case the spreadsheet says Drives 4 channels of LEDs at Up to 200mA so up to 800mA total is hardly a high-current device and doesn't justify the use of two pins. – alexan_e Feb 21 '14 at 13:37