The TPS3803-01DCKR: It is a Simple Reset/Power-On Reset type, meaning it holds the reset output low for a fixed timeout after the supply rises above the threshold, ensuring the downstream processor or logic starts from a known state. The threshold is adjustable via an external resistor divider, giving flexibility to monitor non-standard voltages.
Timing and temperature fit
Typical propagation delay from the threshold crossing to the reset output is 5 µs, fast enough to catch a brownout on a microcontroller's core supply before the logic state corrupts. The SC-70-5 footprint is common, so breakout boards or adapter PCBs are easy to find or fab.