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TPS2660: e-fuse - SHDN pin connection

Part Number: TPS2660

Hi Experts,

Our customer want to use e-fuse TPS26602 as a switch which is controlled by MCU. Therefore he is interested in connection between MCU and TPS26602 SHDN pin.
He want to be sure that TPS26602 is in shut-down state when MCU GPIO is in high-impedance state. Thus he connected 4k7 pull-down resistor on SHDN pin (as shown in the picture). The resistor will form voltage divider together with internal pull-up resistor (which is much higher) and it will result in enough low voltage at SHDN pin to keep TPS26602 shut down.
In one of the forum posts, he found information that the internal pull-up resistor is 700 kohm.

In chapter 9.3.5.7 of datasheet is this sentence: "To assert SHDN low, the pull down must sink at least 10 μA at 400 mV."
Does it basically define the maximal value of external pull-down resistor as 40 khom in order to keep SHDN pin voltage low enough to shut down TPS26602?

Can customer use this connection to keep TPS26602 in shut-down state when MCU GPIO is Hi-Z?
Please advise. Thank you so much in advance.

Kind regards,
Gerald