Other Parts Discussed in Thread: TPS7A94
TPS7A80 datasheet abs max table says OUT abs voltage rating is 7V(max) independent from Vin voltage. However, datasheet 7.3.1 says reverse voltage measure needs to be done externally.
I would like to know profile what level of reverse voltage and its period of time requires external measure.
Could you let me know guideline what reverse voltage and its time can be fine for TPS7A80 without needing external circuit? Like, in case reverse voltage is 0.8V/0.5V/0.3V, TPS7A80 will be safe for xx msec/ yy msec/ zz msec.
The background of this inquiry is that reverse voltage will happen when input voltage is shutoff and output voltage remains by output capacitor. and I would like to make the solution as small as possible so I don't want to add schottky diode unnecessarily.
Or, TPS7A94 output discharge function will protect from such reverse voltage condition caused by immediate input voltage shut off even though its abs max voltage of OUT is Vin + 0.3V?