Automotive-grade 2.5V rail supervisor
The TPS3851H25SQDRBRQ1: It asserts an active-low reset output when the monitored voltage drops below the threshold, and holds reset for a minimum of 170ms after the supply recovers. The open-drain output lets you wire-OR it with other reset signals, but you need an external pull-up resistor to the logic supply.
8-SON package and footprint
Housed in an 8-SON (3x3 mm) exposed-pad package, the TPS3851H25SQDRBRQ1 is a surface-mount device. The 3x3 mm footprint is compact enough for space-constrained automotive ECU layouts, but the pad pitch is fine enough that a two-layer board may struggle with fan-out; a four-layer stack with a dedicated ground plane under the pad is the safer call.