SLVSFM1 March 2021 TPS62902
A capacitor connected between SS/TR pin and GND allows a user-programmable start-up slope of the output voltage.
An internal constant current source is provided to charge the external capacitance. The capacitor required for a given soft-start ramp time is given by:
The fastest achievable typical ramp time is 150 µs even if the external Css capacitance is lower than 680 pF or the pin is open.