SLUSD49A September 2017 – January 2019 UCC256303
Refer to the PDF data sheet for device specific package drawings
The soft-start capacitor sets the speed of the soft-start ramp. The soft start time varies with load condition. At full load or over load condition, the soft start time is the longest. It is not easy to calculate the exact soft start time value. However, it can be estimated that under full load condition, the longest possible soft start time is given by:
Using a 150-nF soft-start capacitor, gives the longest possible soft-start time as 42 ms according to Equation 72.