I need to make a 5 VDC supply and connect it to a USB jack in my car. I did use a 7805 in a TO-220 package and installed it in a old cig lighter charger housing and I was able to get a small, finned heatsink on it too. But the voltage differential from 12 to 5 dissipated too much heat, it got very hot after a few minutes but it did work. I won't be using it due to the heat.
The main use for this is to charge my phone and other uses, my wall charger for this phone says 5 VDC @ 1 Amp so something near that is what I'd like to have. Are there other chips or other ways to accomplish this ?
PS: please don't tell me to buy an adapter, that's too easy and not what I really want. I'd like to mount the USB jack or jacks in my dash or console and not have anything stuck in the cig lighter socket.
Thanks for any help,
Steve
The main use for this is to charge my phone and other uses, my wall charger for this phone says 5 VDC @ 1 Amp so something near that is what I'd like to have. Are there other chips or other ways to accomplish this ?
PS: please don't tell me to buy an adapter, that's too easy and not what I really want. I'd like to mount the USB jack or jacks in my dash or console and not have anything stuck in the cig lighter socket.
Thanks for any help,
Steve