ZHCSE16C July 2015 – November 2017 LM43600-Q1
PRODUCTION DATA.
The user can leave the SS/TRK pin floating, and the LM43600-Q1 will implement a soft start time of 4.1 ms typically. In order to use an external soft start capacitor, the capacitor should be sized such that the soft start time will be longer than 4.1 ms. Use the following equation in order to calculate the soft start capacitor value:
where
For the desired soft-start time of 10 ms and soft start charging current of 2.2 µA, Equation 23 yields a soft-start capacitor value of 0.022 µF.