UC3543J Datasheet PDF - TI

●DESCRIPTION

●The monolithic integrated circuits contain all the functions necessary to monitor and control the output

●of a sophisticated power supply system. Over-voltage (O.V.) sensing with provision to trigger an external SCR “crowbar” shutdown; an undervoltage (U.V.) circuit which can be used to monitor either the output or to sample the input line voltage; and a third op amp/comparator usable for current sensing (C.L.) are all included in this device, together with an independent, accurate reference generator.

●FEATURES

●• Includes Over-Voltage, Under-Voltage, and Current Sensing Circuits

●• Internal 1% Accurate Reference

●• Programmable Time Delays

●• SCR “Crowbar” Drive of 300 mA

●• Remote Activation Capability

●• Optional Over-Voltage Latch

●• Uncommitted Comparator Inputs for Low Voltage Sensing (UC1544 Series Only)