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TPS1H100-Q1: Off state open load

Part Number: TPS1H100-Q1

Hello,

I am using  TPS1H100-Q1 HSD for 3.5A load. I would like to have off state open load diagnostic function in circuit.

1. Can I remove Rpu in the below circuit? After removing still HSD will detect open load? What will be demerits if Rpu is removed?

2. If Rpu is kept permanently tied to Vbat instead of using switch what will be demerits of this?