Having some trouble finding an example of basic a soft start circuit. I want my circuit to gradually ramp up its power rails when it's switched on. It runs on 5V single supply and has audio jacks, and I don't want there to be a current surge and loud pop on the audio jacks when it's powered on. I want a ramp-up time of 1 second and the output of the ramping circuit needs to be as close to 5V as possible. I don't think it needs to drive more than about 100 mA.