SNVSBJ0A December 2019 – June 2020 LM5170
A dedicated comparator monitors the HV-Port voltage through a resistor divider. The divider consists of an internal 3-MegΩ pullup resistor between the VINX and OVPA pins, and an external pulldown resistor between the OVPA pin and AGND. When the OVPA pin voltage exceeds the 1.185-V threshold, both HOs and LOs are turned off. At the same time CSS is discharged, preparing for the restart through soft start when the OV alarm is removed. See the Soft Start section for details.