SG2548DW

The fault tolerance window of the SG1548 is programmable from ±5% to ±40% using a simple divider network on the 2.5V reference.

The purpose of the SG1548 integrated circuit is to monitor up to four positive DC supply voltages simultaneously for overvoltage and undervoltage fault conditions. It can also monitor one negative DC voltage and has a programmable fault tolerance window from ±5% to ±40%. The circuit includes features such as fault delay programmable with a single capacitor, a comparator with 30mV hysteresis to prevent oscillations, an on-chip inverting op amp for negative voltage, open-collector output logic or expandability, and operation from 4.5V to 40V supply.

The SG1548 quad power fault monitor has several features according to the document: - It can monitor up to four positive DC supply voltages for overvoltage and undervoltage fault conditions . - It can also monitor one negative DC voltage using an on-chip inverting op amp . - The fault tolerance window is programmable from ±5% to ±40% using a simple divider network on the 2.5V reference . - A single external capacitor sets the fault indication delay to prevent false outputs due to noise and interruptions . - It has a comparator with 30mV hysteresis to prevent oscillations . - It operates from 4.5V to 40V supply . - It is available to MIL-STD-883 standards with radiation data available . - It has high reliability features such as LMI level "S" processing available .