Single-Chip Switch for VBUS Line Protection Diodes Incorporated AP22953 Single-Chip Switch is designed for USB 2.0/3.0/Type-C connector VBUS line protection. The AP22953 Bidirectional MOSFET Switch provides normal current flow in both charging and host mode while protecting the internal circuits from overvoltage conditions at the VBUS_CON pin. On the VBUS_CON pin, the device has overvoltage protection of up to 30V. After the #EN pin is pulled low, the AP22953 counts 20ms before turning on the MOSFET via soft-start delay. The #ACK pin indicates the MOSFET is fully turned ON.