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TUSB1210: TUSB1210 VBUS capacitance

Part Number: TUSB1210

Hello,

I'd like to know if the output capacitance of TUSB1210-Q1 really needs to be > 120uF in Host Mode. Why is it that high and under what circumstances can it be lowered? 

In Device Mode it is 4.7uF - can that capacitance also be reduced?

Thanks and best regards,

Jones