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TPS3828-Q1: Exact WDI toggle frequency

Part Number: TPS3828-Q1

Hello there,

I was looking forward to using the TPS3828-33-Q1 device in my design, as I thought it has to be refreshed every 1.6 s. In the datasheet however, I have found the following information:

Does this t_tout min time of 0.9 ms mean, that in order to assure proper working conditions for all possible device batches, I have to toggle the WDI pin with at least 0.9 s period, possibly even a bit less?

I would appreciate all help.