The TIDA-01514 reference design provides protection and diagnostics for antenna modules for use in automotive infotainment and navigation systems. This design is an alternate solution for antenna low-dropout linear regulators (LDOs) for the purpose of achieving lower ohmic drop (IR) while meeting the necessary protection measures such as short circuit: short-to-battery: reverse current: and overvoltage protection. The design also meets the subsystem-level diagnostic requirements such as precise light load and overload detection.