It is very easy to tell. The 1117 has emitter output, like 7805. Thus the high drop out.
A typical LDO has collector output, and has a drop out voltage of less than 0.5v - and many times much lower, because of its collector output toplogy.
It is very easy to tell. The 1117 has emitter output, like 7805. Thus the high drop out.
A typical LDO has collector output, and has a drop out voltage of less than 0.5v - and many times much lower, because of its collector output toplogy.