# STC3115 Reference Design ## Description This project is a Battery Management System (BMS) built around STMicroelectronics' STC3115AIQT battery monitor IC. It uses I2C for communication, features alarm management, and supports battery charging. The power supply, battery connection points, and debug interface are facilitated through connectors. #project #Template #charger #referenceDesign #batterycharger #template #bms #monitor #STC3115 #stm #reference-design #polygon ## Project Details - **Owner:** vasy_skral - **Created:** 2/6/2024 - **Last Updated:** 3/4/2026 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Copies:** 10 ## Key Components ### J1 — [Pin Header 01x03 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x03-254mm-vertical~cp4.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### J2 — [Pin Header 01x06 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x06-2p54mm-vertical~lzd.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] ### Rcg — [Res-0805-US-Template Simplified Footprint No Prop](https://www.flux.ai/vasy_skral/res-0805-us-template-simplified-footprint-no-prop~jww.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Resistor - Resistance: 30mΩ **Pins:** - P1 [pin 1] - P2 [pin 2] ### U1 — [STC3115AIQT](https://www.flux.ai/vasy_skral/stc3115aiqt~ib.md) - Manufacturer Part Number: STC3115AIQT - Part Type: Integrated Circuit - Datasheet URL: https://www.st.com/content/ccc/resource/technical/document/datasheet/24/05/c6/c7/0c/72/41/39/DM00066800.pdf/files/DM00066800.pdf/jcr:content/translations/en.DM00066800.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: STMicroelectronics **Pins:** - ALM [pin 1] - BATD/CD [pin 8] - CG [pin 6] - GND [pin 5] - RSTIO [pin 7] - SCL [pin 3] - SDA [pin 2] - VCC [pin 9] - VIN [pin 10] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/vasy_skral/stc3115-reference-design~4am](https://www.flux.ai/vasy_skral/stc3115-reference-design~4am).* --- *Generated from [https://www.flux.ai/vasy_skral/stc3115-reference-design~4am](https://www.flux.ai/vasy_skral/stc3115-reference-design~4am)*