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BQ34110EVM-796: What is the idea of Q3? Eventually I wonder how to determine R5 and R2.

Part Number: BQ34110EVM-796

Hi there,

Just checking out the schematics of the BQ34110EVM-796 (i.e. in SLUUBI1A). Now I struggle to understand the idea of Q3. So firstly I understood it as en/disable circuitry for the battery voltage that goes into "BAT" (by controlling Q2). However, in that case I don't understand the selection of R5 that is 165k. If a simple on/off functionality would be required, this resistor is likely superfluous, not?

But as it is there (which sure is well thought by its designer), may I misunderstand the function of Q2?

Thx for your input.