SLVS736C February 2008 – October 2023 TPS2550 , TPS2551
PRODUCTION DATA
The reverse-voltage protection feature turns off the N-channel MOSFET whenever the output voltage exceeds the input voltage by 135 mV (typical) for 4-ms. This feature prevents damage to devices on the input side of the TPS2550/51 by preventing significant current from sinking into the input capacitance. The N-channel MOSFET is allowed to turn-on once the output voltage goes below the input voltage for the same 4-ms deglitch time. The reverse-voltage comparator also asserts the FAULT output (active-low) after 4-ms.