A drop of the battery voltage while the module is in Sleep Mode leads to a higher device current consumption.
The scenario can be the following:
1. The microcontroller sends the TLE9185xx to Sleep Mode, and goes itself in Sleep Mode
2. VS/VSINT drops below the monitoring threshold voltage VPOR,f and rises above the voltage VPOR,r. The TLE9185xx wakes up autonomously
3. Since the watchdog cannot be served, the microcontroller is still in Sleep Mode, after 4 consecutive watchdog failures, the TLE9185xx goes in Fail Safe Mode with higher device current consumption as expected in Sleep Mode without the microcontroller knowledge.
