AP25810LQ USB Type-C DFP Controller & Power Switch Diodes Incorporated AP25810LQ USB Type-C DFP Controller and Power Switch is designed to monitor the USB Type-C configuration channel (CC) lines to determine when a USB device is attached. When an upstream-facing port (UFP) device is connected, the AP25810LQ applies power to the VBUS. It communicates the selectable VBUS current-sourcing capability to the UFP via the pass-through CC line. If the UFP is attached using an electronically marked cable, the AP25810LQ also applies VCONN power to the cable CC pin. Additionally, the switch identifies when USB Type-C audio or debug accessories are attached.