HV440

Supertex inc. HV440 High Voltage Ring Generator IC Features ►► 220V maximum operating voltage ►► Integrated high voltage transistors ►► Up to 70VRMS ring signal ►► Pulse by pulse output over current protection ►► 5 REN output capability ►► External MOSFETs enhance output rating to 20 REN General Description The Supertex HV440 is a monolithic integrated circuit capable of generating up to 70V RMS sine wave output at frequencies of 15 to 60Hz with a load of 5 North American RENs. Its out putrating can be enhanced to 20 North American RENs with the addition of two Supertex MOSFETs: one N-Channel MOSFET, the TN2524N8, and one P-Channel MOSFET, the TP2522N8. Applications ►► Microcontroller or microprocessor controlled high voltage ring generator ►► Set-top/street box ring generator ►► Pair gain ring generator ►► Wireless local loops ►► Fibre in the loop/to the curb ►► Coax cable loop The high voltage output P- and N-Channel transistors a...