ZHCSI13J October 2004 – November 2018 TPS75003
PRODUCTION DATA.
In an overload condition, the current rating of the external components (PMOS, diode, and inductor) can be exceeded. To help guard against this, the TPS75003 device increases its minimum off-time when the voltage at the feedback pin is less than the reference voltage. When the output is shorted (VFB is zero), the minimum off-time is increased to approximately 4μs. The increase in off-time is proportional to the difference between the voltage at the feedback pin and the internal reference.