HV430

Supertex inc. HV430 High-Voltage Ring Generator Features ► 105Vrms ring signal ► Output overcurrent protection ► 5.0V CMOS logic control ► Logic enable/disable to save power ► Adjustable deadband in single-control mode ► Power-on reset ► Fault output for problem detection Applications ► Line access cards ► Set-top/Street box The RESET input functions as a power-on reset when connected to an external capacitor. The FAULT output indicates an overcurrent condition and is cleared after 4 consecutive cycles with no overcurrent condition. A logic low on RESET or ENABLE clears the FAULT output. It is activelow and open-drain to allow wire OR’ing of multiple drivers. PGATE and NGATE are controlled independently by logic inputs PIN and NIN when the MODE pin is at logic high. A logic high on PIN will turn on the external P-channel MOSFET. Similarly, a logic high on NIN will turn on the external N-channel MOSFET. Lockout circuitry prevents the N and P switches from turning...