AnalogicTech offers a wide selection of intelligent port protection devices – including simple port switches, dedicated USB devices, and user-programmable load switches – of which many are UL-approved.  To provide power for the microprocessor, modem, and interface ICs, products include LDO linear regulators with low output noise, fast turn-on, and low quiescent current in very small packages. For USB (Universal Serial Bus)-powered ADSL modems, where efficiency is key, AnalogicTech offers DC/DC solutions – including high frequency Step-Down converters or integrated half bridge devices – and TrenchDMOS power MOSFETs for discrete implementations. All of these products can be combined with our slew-rate limited load switches to turn off portions of the modem that are not always in use. Voltage monitors and complete microprocessor supervisory circuits are available to satisfy most power monitoring requirements.