Active antenna supply. Linear voltage regulator with integrated current sense. The TLF4477-3LA is a versatile dual channel low drop out voltage regulator that can efficiently cater to the needs of standard active antennas like FM/AM, DAB, XM, and SIRIUS. Its adjustable output voltage, current monitoring, comprehensive fault indication, and the ability to independently disable outputs for power conservation make it a reliable and flexible solution for various applications in the automotive and communication domains.