Active production – automotive-grade supervisor for 3.3V and 5V rails
The TPS3840DL28DBVRQ1 is a Texas Instruments simple reset IC, part of the Automotive AEC-Q100 series, designed to monitor a single voltage rail and assert a reset signal when the supply drops below a 2.8V threshold.
2.8V threshold and 619 ms timeout – what they mean for rail monitoring
The 2.8V threshold is set to detect undervoltage on a nominal 3.3V or 5V supply before the downstream logic enters an indeterminate state. The 619 ms typical reset timeout holds the output low long enough for the power rail to stabilise after a brownout or during power-up, preventing premature release that could cause erratic boot behaviour.
Sourcing and lifecycle – active status, automotive qualification, and packaging options
The automotive AEC-Q100 qualification is listed on the product series, making it suitable for production programs requiring that certification.