I am trying to build a fixed 5V buck boost converter with input voltages ranging from 3-7.2V (which is from a battery) and maximum output current with 2-5 A. My use case for this converter is to power up a micro-controller and a servo motor. I have found an online design that closely matches my requirements which is linked below.
The design looks as follows,
I was unable to find the IC for this design which is XL6009.I also wanted this circuit to work with the input range from 3-7.2 V.So I am planning to replace that chip with LT1171CT. Will this work with the same design? Datasheet is linked below,If you have better suggestions please do.
I am really new to power electronics so I only have very small knowledge about it. So I looked up how to design buck boost converters and found the following post on electronics stack exchange.
I tried to go through the data sheets in buck boost converter chips but they either have step up or step down seperately. I cant seem to figure out how to combine them together and make a buck boost.
If you can direct in the right direction it is appreciated. I want to learn how to use the datasheets to design circuits but I am confused right now.