Datasheet

TPS22946
www.ti.com SLVS984A –SEPTEMBER 2009–REVISED FEBRUARY 2010
Over Temperature Protection
An over temperature condition occurs when the temperature of the part is greater than 140°C. The OC flag will
go low to indicate a fault. If the over temperature condition persists for more than 6 seconds, the part times out
and shuts OFF. The part has to be enabled by either toggling the ON pin or the VIN pin. If the temperature
reduces below 130°C within 5 seconds, the part will start normal operation.
If the temperature is not constantly high above 140°C and is toggling between greater than 140°C and less than
130°C, the internal timeout timer keeps resetting. If this event occurs more than 32 times, it will cause the part to
shut OFF. It can be enabled by toggling either the ON pin or the VIN pin.
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