SLVS850A June 2008 – September 2023 TPS2551-Q1
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 preventing the damage to devices on the input side of the TPS2551. This reverse-voltage protection also prevents further damage by lessening the chance that the significant current sinks 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.