ZHCSF14D March 2010 – October 2018 TPS54260
PRODUCTION DATA.
The enable start threshold voltage is 1.25 V typical. With EN held below the 1.25-V typical threshold voltage the TPS54260 is disabled and switching is inhibited even if VIN is above its UVLO threshold. The input current is reduced in this state. If the EN voltage is increased above the rising threshold voltage while V(VIN) is above the UVLO threshold, the device becomes active. Switching is enabled and the slow-start sequence is initiated. The TPS54260 ramps up the output voltage at the slow-start time determined by the capacitance on the SS/TR pin. If EN is pulled below the 1.25-V typical threshold the TPS54260 will enter the reduced input current state again.