Battery Backup Supervisor with 60ms Reset Timeout
It asserts an Active Low reset output when the monitored voltage drops below threshold and holds reset for a minimum of 60ms after the supply recovers — long enough for most MCUs and SoCs to complete their power-on reset sequence before code execution starts. The push-pull output drives the reset line directly without an external pull-up resistor, saving one component and one PCB trace compared to open-drain supervisors. This simplifies the BOM in space-constrained designs where every resistor counts.
2.93V Threshold and Industrial Temperature Range
The 2.93V threshold is typical for monitoring a 3.3V supply with margin — the supervisor will assert reset before the rail falls below the minimum operating voltage of most 3.3V logic. Compared to the TLV803ED29DBZR which uses an open-drain output and has a 33ms minimum reset timeout, the TPS3619-33DGK's push-pull output eliminates the external pull-up and its 60ms timeout provides a longer reset hold time for systems with slower supply ramp rates. The TLV803EA29VDBZR offers 130ms minimum timeout but also uses open-drain output and extends to 125°C ambient, making it a better fit for high-temperature environments if the open-drain topology is acceptable.
Active Lifecycle and 8-VSSOP Package
The part is supplied in an 8-VSSOP package (3.00mm width, 0.118" pitch) on tube. The base product number TPS3619 covers the family; the -33 suffix indicates the 2.93V threshold option.