/diy/ - Do It Yourself

Anonymous Sun Jan 17 11:36:19 2021 No.2005836 [View]
File: 13 KB, 227x339, 7805-Voltage-Regulator-Pin-Diagram.jpg [View same] [iqdb] [saucenao] [google]

Hi noob here

If I put 12V DC on a LM7805 regulator (lets say from a 12V 5A power supply) rated to output 2A, the current draw on its 5V pin will be limited to 2A. However, what about the 12V pin? If I had two circuits, would I still be able to draw 5A from the 12V pin? Or would I have to connect my 12V circuit to the PSU directly?

In other words, how do I split 12V into a 5V and 12V circuit and maintain the ability to draw 5A on the 12V rail using an LM7805?

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/diy/ - Do It Yourself

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