SPRAD21E May 2023 – February 2024 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP , AM62A3 , AM62A3-Q1 , AM62A7 , AM62A7-Q1 , AM62P , AM62P-Q1
It is recommended to provide a power switch to control the VBUS supply to externally connected device and protect power switch input supply from being overloaded.
The power switch output connects to the USB type A connector. It is recommended to connect a capacitor (>120-μF) to the VBUS supply close to the connector.
The USBn_DRVVBUS (n=0..1) signals with an internal pulldown is used to enable the VBUS power switch. An external pulldown near to the power switch enable (EN) pin is recommended. Connection of USBn_VBUS (VBUS supply input including Voltage Divider / Clamp) is optional.
If the power switch used has an OC (over current) indication output, pullup the OC indication output and connect to a processor IO (input).