ZHCSB48B May 2013 – January 2019 TPS55330
PRODUCTION DATA.
The enable rising-edge threshold voltage is 1.08 V (typical) with 0.16 V hysteresis (typical). With the EN pin held below the turn-off voltage the device is disabled and switching is inhibited. The IC quiescent current is reduced in this state. When the input voltage is above the UVLO threshold and the EN pin voltage increases above the rising edge threshold, the device becomes active. Switching enables and the soft-start sequence initiates. The TPS55330 device starts at the soft-start time determined by the external soft-start capacitor.