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The TPS25200 thermally protects itself by thermal cycling during an extended overcurrent condition. The device turns off when the junction temperature exceeds 135°C (typical) while in current limit. The device remains off until the junction temperature cools 20°C (typical) and then restarts. The TPS25200 cycles on/off until the overload is removed (see Figure 26 and Figure 29).
The FAULT signal is not deglitched when the MOSFET is disabled due to an overtemperature condition but is deglitched after the device has cooled and begins to turnon. This unidirectional deglitch prevents FAULT oscillation during an overtemperature event.
