What this voltage monitor does on the board
The TPS3711DDCR: The threshold is adjustable or selectable via external resistors, giving the designer flexibility to set the trip point for any rail from under 1 V up to the device's supply limit.
Open-drain output and threshold setting
The adjustable threshold lets one BOM line cover multiple rail voltages by changing the resistor divider ratio.
Housed in a SOT-23-6 Thin package, the part occupies minimal board area and is compatible with standard surface-mount assembly processes.