2.93V threshold for 3.3V rail supervision
The TPS3820-33QPDBVRQ1 is a single-channel voltage monitor from Texas Instruments, part of the TPS3820 family, designed to assert a reset signal when the monitored supply drops below 2.93V. This threshold is set for a nominal 3.3V rail, providing a brown-out detection window that catches supply dips before the downstream logic enters an undefined state. The active-low, push-pull output drives the reset line directly without needing an external pull-up resistor.
AEC-Q100 grade for under-hood deployment
The 15ms minimum reset timeout gives the power supply and oscillator time to stabilise before the processor boots — a margin that matters in cold-crank and load-dump transients.
SOT-23-5 footprint and supply chain
Housed in a 5-pin SOT-23-5 package (SC-74A, SOT-753), this part shares the same footprint as many other TI voltage supervisors, easing board-level substitution.