MAX16956AUBA+: FAQ

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For MAX16956 if AGND is not connected to GND; is there a diode to PGND to handle any current referenced to AGND that needs to get to GND?

IC will not work properly if AGND is open circuit or high impedance. OUT will not regulate under this condition
In MAX16956 what happens if /RESET is asserted and shorted to a 3.3V?

As long as /RESET does not exceed VBIAS+0.3V, there is no permanent damage or failure. However, device will lose functionality when this happens.
In the MAX16956, what happens if the BST pin loses the connection to the LX pin?

If the capacitor from LX to BST is removed, high side gate drive is lost and OUT will not regulate.

For MAX16956 if AGND is not connected to GND; is there a diode to PGND to handle any current referenced to AGND that needs to get to GND?