It is not posssible to change the internal current limit of the device. The device has an internal MOSFET and there is no external control of setting the over current limit.
MAX17504
Production
The MAX17504/MAX17504S high-efficiency, high-voltage, synchronously rectified step-down converter with dual integrated MOSFETs operates over a 4.5V to...
Datasheet
MAX17504 on Analog.com
It is not posssible to change the internal current limit of the device. The device has an internal MOSFET and there is no external control of setting the over current limit.