# USB-C Battery ORing ## Description USB-C 2.0 power entry with ESD protection and automatic USB/battery ORing onto a shared 5 V system rail. ## Project Details - **Owner:** ryanf - **Created:** 7/12/2026 - **Last Updated:** 7/13/2026 - **Visibility:** Public ## Key Components ### J4 — [USB4105-GF-A](https://www.flux.ai/adrian95/usb4105-gf-a~im9.md) - Manufacturer Part Number: USB4105-GF-A - Manufacturer Name: GCT - Functional Group: USB-C Battery ORing — USB-C 2.0 power-entry and protection subsystem centered on a GCT USB4105-GF-A right-angle USB-C receptacle. The schematic exposes VBUS/VUSB/PP5V0/VBAT rails, routes USB 2.0 D+/D− through an ST USBLC6-… (imported from flux-reference-design/usb-c-2p0-power-entry-and-esd-protection-reference-design) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5492/USB4105.pdf - Part Type: USB-C 2.0 Connector - Manufacturer Name: GCT **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND [pin A1_B12] - GND__1 [pin B1_A12] - SBU1 [pin A8] - SBU2 [pin B8] - SHELL_GND [pin SH1] - SHELL_GND__1 [pin SH2] - SHELL_GND__2 [pin SH3] - SHELL_GND__3 [pin SH4] - VBUS [pin A4_B9] - VBUS__1 [pin B4_A9] ### Q1 — [AO3401A](https://www.flux.ai/jecstronic/ao3401a~9r5.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: AO3401A - Functional Group: USB-C Battery ORing — USB-C 2.0 power-entry and protection subsystem centered on a GCT USB4105-GF-A right-angle USB-C receptacle. The schematic exposes VBUS/VUSB/PP5V0/VBAT rails, routes USB 2.0 D+/D− through an ST USBLC6-… (imported from flux-reference-design/usb-c-2p0-power-entry-and-esd-protection-reference-design) - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2007171935_HUASHUO-AO3401A_C700954.pdf - Part Type: Transistor - Manufacturer Name: HUASHUO **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### U7 — [USBLC6-2SC6](https://www.flux.ai/collinsemasi/usblc6-2sc6~jt.md) - Voltage - Reverse Standoff: 5.25V - Unidirectional Channels: 2 - Manufacturer Name: STMicroelectronics - Part Type: ESD PROTECTION - Manufacturer Part Number: USBLC6-2SC6 - Functional Group: USB-C Battery ORing — USB-C 2.0 power-entry and protection subsystem centered on a GCT USB4105-GF-A right-angle USB-C receptacle. The schematic exposes VBUS/VUSB/PP5V0/VBAT rails, routes USB 2.0 D+/D− through an ST USBLC6-… (imported from flux-reference-design/usb-c-2p0-power-entry-and-esd-protection-reference-design) - Voltage - Breakdown: 6V - Operating Temperature: -40°C ~ 150°C (TJ) - Datasheet URL: https://www.st.com/content/ccc/resource/technical/document/datasheet/06/1d/48/9c/6c/20/4a/b2/CD00050750.pdf/files/CD00050750.pdf/jcr:content/translations/en.CD00050750.pdf **Pins:** - 1 [pin 1] - 3 [pin 3] - 4 [pin 4] - 6 [pin 6] - GND [pin 2] - VBUS [pin 5] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ryanf/usb-c-battery-oring~hui](https://www.flux.ai/ryanf/usb-c-battery-oring~hui).* --- *Generated from [https://www.flux.ai/ryanf/usb-c-battery-oring~hui](https://www.flux.ai/ryanf/usb-c-battery-oring~hui)*