This application is intended for the initial power stage in applications with the 12 V batteries. Variation of the battery voltage is common between 9 V and 16 V. Furthermore, if cold-cranking and load dump conditions are considered, voltage transients can occur as low as 3 V and as high as 42 V. In this design example, we are highlighting the ability for low power, direct off-battery voltage supervision.

Figure 11-5 illustrates an example of how the TPS3760 is monitoring the battery voltage while being powered by it, as well.

Figure 9-2 TPS3760 Overvoltage Supervisor with Direct Off-Battery Monitoring