LTC3625 Not working as expected with LTSpice
R1 (the PROG input) has a value that attempts to force the chip to feed the output capacitors with 2 amps. Having R2 at 25 ohms is going to run the chip into a reset problem once current starts charging the output capacitors so, if you are trying to limit the output capacitor current, adding R2 is the wrong way to do it - change R1 to a much higher value such as 500 kohm to get a charge current of about 300 mA.