R
I have programmed a based board that has the simple function of supplying ground through a MOSFET to a DVR system. It now resided in my vehicle. When the battery voltage is higher than 11.25, and once it drops below that ground is not returned until voltage is above 13.3 when the engine is on.
I'm using the LM7805 VR. I'm worried about Canada winters on my car. So I ordered some boards that have LM2596S low quiescent regulators mounted. These kinds of regulators are supposed to have just a few microamps of quiescent current.
With no load at all the regulator still pulls 6.25 ma. Why would this be consuming more power than the cheap LM7805 regulators? I haven't used low quiescent regulators before, so maybe it's user error, but I don't know what I could do differently.
Thoughts?
I'm using the LM7805 VR. I'm worried about Canada winters on my car. So I ordered some boards that have LM2596S low quiescent regulators mounted. These kinds of regulators are supposed to have just a few microamps of quiescent current.
With no load at all the regulator still pulls 6.25 ma. Why would this be consuming more power than the cheap LM7805 regulators? I haven't used low quiescent regulators before, so maybe it's user error, but I don't know what I could do differently.
Thoughts?