Mimicking a 3.7v lithium battery with solar power
The battery I'm trying to mimic is 3.7v at 760 mA. I was thinking of making a solar panel with an output of 5v at 1amp, and then using a voltage reg to bring the 5v down to a steady 3.7v.
Can I get a 3.7v regulator? Is there such a thing as an adjustable/customizable voltage regulator?
Would 4v be fine instead of 3.7v? is it close enough?