Hello everyone, just looking for some help.
I'm moderately versed in electronics but am rather stumped at this simple circuit i'm trying to put together.
I'm trying to make a smallish device that will go in my car and convert 12v DC current to 5v DC current to power a couple of things. I have the base of the circuit built which is built around a 7805 regulator putting out my 5v current. My main problem is that the 7805 regulator works fine for small devices when I plug anything significant into it it immediately gets hot and shuts down. I would like to keep this device small so I'd rather not just slap a huge heat sink on this to solve the problem. I've tried some simple divider circuits and just plain old resistors to drop the input voltage but any of those solutions won't allow me to draw enough amps to power anything. The devices i need to power draw around 500ma and it appears that with a 12v input the max the 7805 will handle is around 100ma.
Any thoughts on what I can do to drop the 12v input to 5v and provide adequate amperage without going to a large heat sink?
I'm moderately versed in electronics but am rather stumped at this simple circuit i'm trying to put together.
I'm trying to make a smallish device that will go in my car and convert 12v DC current to 5v DC current to power a couple of things. I have the base of the circuit built which is built around a 7805 regulator putting out my 5v current. My main problem is that the 7805 regulator works fine for small devices when I plug anything significant into it it immediately gets hot and shuts down. I would like to keep this device small so I'd rather not just slap a huge heat sink on this to solve the problem. I've tried some simple divider circuits and just plain old resistors to drop the input voltage but any of those solutions won't allow me to draw enough amps to power anything. The devices i need to power draw around 500ma and it appears that with a 12v input the max the 7805 will handle is around 100ma.
Any thoughts on what I can do to drop the 12v input to 5v and provide adequate amperage without going to a large heat sink?