If an external wire harness shorts to the vehicle chassis, the B58944 limits the output current to avoid thermal destruction. Versatile Application Profile
Try visiting the NEC (or its successor, Renesas Electronics) website. They often have archives of datasheets for their products. nec b58944 datasheet 2021
2021 Datasheet Overview: Electrical and Design Considerations If an external wire harness shorts to the
Websites like Datasheet catalog, Alldatasheet, or Digikey sometimes host extensive archives of electronic component datasheets. nec b58944 datasheet 2021