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TUSB4041I: charging a smart-phone from down stream port of TUSB4041I

Guru 29720 points
Part Number: TUSB4041I

Hi Team,

My customer designed their application with TUSB4041I, however he found the application coudn't charge up a smart-phone as expected.
The charge current is only 80mA in this case.

He confirmed charge current is around 500mA if the same smart-phone is connected to USB port of PC that isn't charging port.
Do you know why the charge current is only 80mA?
Is the issue attributed to TUSB4041I?

Best Regards,
Yaita