I am wanting to charge a small battery (allows for about 5 min of LED time) and run an LED (small, bright, flashlight size LED) .
I am looking to have this run from a dynamo (2 or 3 wire) that will obviously have a variable voltage input from 2 to 20V - no need to worry about the lower end (less than 5V) if needed. Obviously, two (or 3) diodes will be needed on the input - lets not focus on that part.
Looking for inexpensive ($10 limit)
Looking for something that would properly charge the battery to allow for a long life (years?)
I was looking for the LM3622 - but since it is no longer produced I did not want to track one down for the project as I may need quite a few more and also need to worry about failures down the road (it also needs additional components).
The picture is what I am trying to replace with something infinitely smaller (do not worry about the battery or LED)
Kind of an odd desire, but who knows - someone may know of something exactly like what I am looking for... I have not had any luck trying to fond anything even remotely close.
Any ideas are appreciated. Not one for the electronic side of the house - so I would consider myself a semi-noob when trying to tell me something. More on the mech side --- I know, I know... Pressure is pressure and it all works the same... :-)