Changing the LTC2953's internal 512ms /KILL Timer

Question

Accepted Answer

Question: 
 There is a need for up to 600-700ms time to start the system bootloader and to set /KILL high. So in that case, the LTC2953 will disable, as it supposed to be, the power supply after 512ms and the system won't start up. 
 Is it possible to enlarge the waiting time before the LTC2953 will disable the power supply? Or is there any related product with same function and footprint with a longer waiting time? 
 
 Answer: 
 All the pushbutton controllers of this family have the same 512ms /KILL blanking time. This spec isn’t adjustable, but PB debounce time is. See Forced Power Off Sequence section in the LTC2953 datasheet for details.

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LTC2953: FAQ