2.9V threshold supervisor for 3.3V and 3.0V rails
The TPS3840PL29DBVR monitors a single supply rail and asserts a reset when the voltage drops below 2.9V. That threshold suits 3.3V and 3.0V rails where a 10–15% drop below nominal signals a brown-out condition — the reset holds the processor until the rail recovers and the 619ms timeout elapses, giving the supply time to stabilise before the CPU starts executing again.
Active production in SOT-23-5
Wide junction temperature range for industrial and automotive
The junction rating means the die itself is qualified to 125°C, not just the case — relevant when the part sits near a hot regulator or power stage.