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LM46001: PGOOD pin floating or tied to GND

Part Number: LM46001

Hi team,

since I use the LM46001 to generate -15V, we connect GND of the IC to -15V in order to use it as buck-boost. Is it better to leave the pin PGOOD open/floating or to connect it through a resistor to -15V? The Datasheet says PGOOD-AGND should be between -0.3V and 15V, so if I put PGOOD to GND then I would have 15V difference between PGOOD and AGND.

Please let me know what you suggest.

Thank you and best regards,

Adrian