SLVS736C February 2008 – October 2023 TPS2550 , TPS2551
PRODUCTION DATA
The FAULT open-drain output is asserted (active low) during an overcurrent, overtemperature or reverse-voltage condition. The output remains asserted until the fault condition is removed. The TPS2550/51 is designed to eliminate false FAULT reporting by using an internal delay "deglitch" circuit for overcurrent (7.5-ms) and reverse-voltage (4-ms) conditions without the need for external circuitry. This "deglitch" circuit ensures that FAULT is not accidentally asserted due to normal operation such as starting into a heavy capacitive load. The deglitch circuitry delays entering and leaving fault conditions. Overtemperature conditions are not deglitched and assert the FAULT signal immediately.