SMT4004

The SMT4004 is a fully integrated programmable voltage manager IC, providing supervisory functions and tracking control for up to four independent power supplies. The four internal managers perform the following functions:Monitor source (bus-side) voltages for under- and overvoltage conditions, monitor each supply for over-current conditions, monitor back end (card-side) voltages for two staged levels of under-voltage conditions, insure power to the card-side logic tracks within the specified parametric limits, and provide supply status information to a host processor.

The SMT4004 incorporates nonvolatile programmable circuits for setting all of the monitored thresholds for each manager. Individual functions are also programmable allowing interrupts or reset conditions to be generated by any combination of events. Because of a proprietary EEPROM technology that SMT4004 employs it is also able to store fault conditions as they occur. In the case of a catastrophic failure the fault is recorded in the registers and then can be read for analysis.