When you are looking at the LTC4252B/C Series of Hot swap controllers from Linear Tech the -1 or -2 in the part number is call out the function after fault.
-1 is calling out “Latch Off After Fault”
-2 is calling out “Automatic Retry After Fault”
For full details see the LTC4252B/C-1,2 Datasheet
Applicable Part Numbers
LTC4252-2IMS#PBF-ND LTC4252BIMS-2#PBF-ND LTC4252A-1CMS#PBF-ND LTC4252BIMS-1#PBF-ND LTC4252A-2IMS#PBF-ND LTC4252BIMS8-2#PBF-ND LTC4252BCMS-2#PBF-ND LTC4252BIMS8-1#PBF-ND LTC4252BCMS-1#PBF-ND LTC4252CIMS-1#PBF-ND LTC4252CIMS-2#PBF-ND LTC4252CCMS-2#PBF-ND LTC4252-1CMS8#PBF-ND LTC4252-2CMS8#PBF-ND LTC4252BCMS8-1#PBF-ND LTC4252BCMS8-2#PBF-ND LTC4252-1CMS8#TRPBF-ND LTC4252-2CMS8#TRPBF-ND LTC4252BCMS8-1#TRPBF-ND LTC4252BCMS8-2#TRPBF-ND LTC4252-1IMS8#PBF-ND LTC4252-2IMS8#PBF-ND LTC4252-1CMS#PBF-ND LTC4252-2CMS#PBF-ND LTC4252-2IMS8#TRPBF-ND LTC4252-1IMS8#TRPBF-ND LTC4252BIMS8-1#TRPBF-ND LTC4252BIMS8-2#TRPBF-ND LTC4252-1CMS#TRPBF-ND LTC4252-2CMS#TRPBF-ND LTC4252BCMS-1#TRPBF-ND LTC4252BCMS-2#TRPBF-ND LTC4252-1IMS#PBF-ND LTC4252A-2CMS#PBF-ND LTC4252CCMS-1#PBF-ND LTC4252CCMS-1#TRPBF-ND LTC4252CCMS-2#TRPBF-ND LTC4252A-2CMS#TRPBF-ND LTC4252A-1CMS#TRPBF-ND LTC4252BIMS-1#TRPBF-ND LTC4252BIMS-2#TRPBF-ND LTC4252-2IMS#TRPBF-ND LTC4252-1IMS#TRPBF-ND LTC4252A-1IMS#PBF-ND LTC4252CIMS-1#TRPBF-ND LTC4252CIMS-2#TRPBF-ND LTC4252A-2IMS#TRPBF-ND LTC4252A-1IMS#TRPBF-ND