Is "1.05-ms Soft Start" function only valid when Vin is added?
I enabled EN pin 2seconds after Vin is added,and "1.05-ms Soft Start" is not valid.
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Is "1.05-ms Soft Start" function only valid when Vin is added?
I enabled EN pin 2seconds after Vin is added,and "1.05-ms Soft Start" is not valid.
Hi Chikara,
I'm sorry I didn't get what you meant by 'not valid'. Did Vout stay 0V when EN is enabled or the booting time is not 1.05ms.
Best Regards,
Travis
Hi Travis,
Sorry for the confusing explanation.
I meant the booting time is not 1.05ms .
Vout rises to the specified value after about 300uS enabled EN .
Thanks & Best Regards
Hi Chikara,
The datasheet Soft Start time (boost) means the rising time of the internal reference voltage during boost soft start phase. For boost soft start phase, please view datasheet P9.
The external Vout rising time is determined by Iout and Cout and is therefore hard to be given.
Best Regards,
Travis