Ok i just closely read it, can someone please look at it, it took me some time to get those chips so i dont want to fry them :0
Im using typical operating circuit from first page for MAX1649, connected like that it will work as fixed 5V output.
Resistor from V+ to CS (this is current sense resistor Rsense?). My minimal input voltage will be 6V and maximum load current will be 2.5A , checked figure 5a to find out rs=0.030 (is this ohms?) so ill need resistor with value of 30 mili ohms (+/-5%)? (do resistors have current rating??). Its suggested to have low inductance. Also i didnt noticed anywhere what Watt rating should have that resistor :/
Inductor between output and pfet. It is recommended that it should be between 10-68 uH. I can check its minimal value. Ilim in worst case scenario will be 0.140V (Vcs)/0.030 (rsense)=4.7 A?. It says to set ΔI=0.1 for an overshoot of 10% (i dont know what does it mean) so my minimum L is (with maximum input 8.5V) 2uH (its suggested greater than 10uH so i dont know what to pick, it should be higher than 10uH but how high? :/ Also inductor has to be rated for 4.7A (Ilim)
Diode fast switching schottky with rating for Ilim and Vinput max.
Switching transistor is explained very well , it will be most likely SUP90P06-09L, is it good?
https://www.electro-tech-online.com/custompdfs/2013/02/73010.pdf
Input bypass capacitor. It says that it should be low ESR, on schematic its electrolytic capacitor but then i datasheet it says "Bypass the IC separately with a 0.1 micro farad ceramic capacitor" So the capacitor should be electrolytic or ceramic? And value 0.1 micro farad? I dont know what to pick.
Output capacitor. LOW ESR, electrolytic, what value? It does not say :/
Ref Capacitor. 0.1uF or larger (how much larger?)