Hi All, Is it possible to run a buck-boost or flyback SMPS from a 0.2Vpp signal line? My signal has bandwith from 1-5K with low output impedance. I am looking to trickle charge a 3.3V battery. I would be happy if I could get a couple of mA at 3 to 5 volts.
I also am looking for this to be in a small package. The switcher would need to fit in a footprint of about 25 X 25 mm.
Am I dreaming or is this possible?