UNITRODE UC1543 UC1544 UC2543 UC2544 UC3543 UC3544 handbook

This product contains over-voltage, under-voltage and current sensing circuits, an internal 1% accurate reference, programmable time delays, SCR “crowbar” drive of 300mA, remote activation capability, optional over-voltage latch, and uncommitted comparator inputs for low voltage sensing (only for UC1544 series)