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LM25149-Q1: Question about VCC regulator

Part Number: LM25149-Q1

Hello Team,

Our customer is now considering to use TPS25149-Q1. They have some questions about VCC regulator inside this device.

Q. How much is the RON(max) of FET inside the VCC regulator?

Q, Could you describe what is "RVCCX(VCCX resistance)=2Ω)"? Is this external resistor? I would like you to describe this resistance in the circuit diagram for my better understanding.

FYI, Customer usecase are below

・Vin=4V~36V(Load dump)





Yuta Kurimoto