LMZ31530: Behaviour when output current greater than 30A but less than internal limit of 40A

Part Number:LMZ31530

This part is rated for an output current from 0 to 30A. It has an internal current limit threshold of 40A (typical). We would like to find out the behaviour of this device between 30A and 40A.

1) In other words, how will the device behave if the current is greater than 30A but less than that required to trigger the internal current limit threshold of 40A?

2) If the device has significant cooling so that the junction temperature does not approach the thermal shutdown limit of 145C, is it safe to operate the device in this region (above 30A and below internal current limit of 40A)?

Thank you.