So let's say I have a circuit that requires 2 Volts DC exactly as the source, but my power supply can be from 1 Volt to 12 Volts DC.
It would be easy to step down the voltage with a linear voltage regulator if the supply voltage was higher than what is needed for the circuit.
However, I can't seem to find any ICs that do both. It seems like no voltage regulators step up the voltage while stepping down the current into the circuit... So I'm wondering if this is even possible.
The load is a huge capacitor that will draw as much current as possible due to low series resistance! I don't care the rate at which the capacitor charges, as long as the volts don't exceed the maximum rating. 1.5 Volts will be minimum, 12 will be maximum. The capacitor is rated for 2.7 Volts, so storing energy at 2V seems pretty good to me. But in the source is 1.5 Volts, that's a lot of energy that is unable to be stored, so I figured id step it up to 2V somehow.