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)
This document is a datasheet for the UNITRODE UC1543, UC1544, UC2543, UC2544, UC3543, and UC3544 series of Power Supply Supervisory Circuits. These monolithic integrated circuits are designed to monitor and control sophisticated power supply systems by including over-voltage (O.V.), under-voltage (U.V.), and current sensing (C.L.) circuits.
| Operating Temperature Range | -55°C to +125°C |
|---|---|
| Reference Output Voltage | 2.50 V |
| SCR Trigger Peak Output Current | -600 mA |
| Small Signal Bandwidth | 5 MHz |
The time duration of fault before triggering is programmable with a minimum of 300mA.
The circuit includes an internal 1% accurate reference generator.