The inhibit output terminal is used to control system power management devices allowing for extremely low system current consumption in sleep mode. This terminal can be used to enable and disable local power supplies. The pin has two states: driven high and high impedance (High Z).
When high (on), the terminal shows VSUP minus a diode voltage drop. In the high impedance state, the output is left floating. The INH pin is high for normal, silent, Go-to-Sleep, and standby modes. It is low when in sleep mode.
This terminal should be considered a “high voltage logic” terminal, not a power output thus should be used to drive the EN terminal of the system’s power management device and not used as a switch for the power management supply itself. This terminal is not reverse battery protected and thus should not be connected outside the system module.