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TPS25821: CHG function of USB2.0/3.0

Part Number: TPS25821

Hi team,

My customer would like to confirm with you about the CHG function as below. Thanks.

  • So for our design, should we let CHG to low? But how to know that is USB2.0/3.1 port?
  • If the condition is CHG 0, and STD(500mA for USB 2.0 port), so what happen when the current is 800mA?(because show that current limit is 1.67A…)
  • Or, can we ignore this item? Because no matter which condition, the current limit is same 1.67A.