The TLIN1021-Q1 inhibit, INH, output pin can be used to control the enable of system power-management devices allowing for a significant reduction in battery quiescent current consumption while the application is in sleep mode. The INH pin has two states: driven high and high impedance. When the INH pin is driven high, the terminal shows V_SUP minus a diode voltage drop. In the high impedance state the output is left floating. The INH pin is high in the normal and standby modes and is low when in sleep mode. A 100 kΩ load can be added to the INH output to ensure a fast transition time from the driven high state to the low state and to also force the pin low when left floating.

The INH terminal should be considered a high-voltage logic terminal and not a power output. Thus should be used to drive the EN terminal of the systems 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.