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TPS2553 ILIM pin open

Dear All

I'm Narisawa and distoributor in TI division.

I have two folowing questions

Q1:When ILIM pin is opened, what is current limit in this case?

Q2:ILIM is connecting to GND with 47kohm. But it have some crack on ILIM line on board.

      so ILIM is opened sometimes.

      If ILIM is repeated  "47k connect to open to 47k connect  to open"  frequecy, what is current limit?

      or what does IC happen?  

Thank you for your help.

Narisawa