I am currently using the TPS22922 load switch in a very simple application where it controls the power to a small altimeter. The input voltage to the load switch is between 2-3V (Coin cell). Input capacitance is >> than the output capacitance. The on signal is controlled by a micro.
I have observed a failure on multiple devices where there is a residual voltage (~1V) at the output when the load switch is off (ON is low). This is causing a significant amount of current to be drawn across the 65ohm resistor in the active discharge circuit. The output voltage appears to be leaking through the device through VIN. When I reduce the voltage at VIN, VOUT follows lower. So the delta is typically around 2V.
Any thoughts on what would be causing this leakage? Is it the body diode getting damage?
Note that I have confirmed there is no leakage happening through the altimeter itself.