SLVSFG1A January 2021 – May 2021 TPS2116
IINRUSH = amount of inrush current caused by COUT
COUT = capacitance on VOUT
tSS = output voltage soft start time
VOUT = final value of the output voltage
With a final output voltage of 5 V, the expected rise time is 1.7 ms. Using the inrush current equation, the inrush current caused by a 100-µF capacitance would be 294 mA, well below the 500-mA target.