3.3V rail watchdog for automotive ECUs
The TPS389033GQDSERQ1 is a Texas Instruments simple reset/power-on reset IC with a fixed 3.3V threshold, designed to monitor a single supply rail and assert a reset signal to the downstream processor when the voltage dips below that threshold.
Package and footprint — 6-WSON (1.5x1.5)
The part comes in a 6-WFDFN package, supplied as a 6-WSON (1.5x1.5) — a 1.5 mm by 1.5 mm body with a 0.50 mm pitch. That footprint is small enough to tuck next to the processor without consuming board real estate.
Reset timeout — not specified in this listing
The evidence does not list a reset timeout period for this order code. If the design requires a guaranteed minimum reset pulse width, the datasheet should be consulted for the specific timeout value of the TPS389033 variant.