# MCP73844 Reference Design ## Description This project is a Advanced Dual Cell Lithium-Ion/Lithium-Polymer Charge Management Controllers utilizing the MCP73844 integrated circuit. It includes input and output connectors, a charging current programming resistor, decoupling capacitors, and a charge status indicator LED. #project #Template #charger #MCP73844 #2cell #referenceDesign #batterycharger #template #bms #microchip #reference-design ## Project Details - **Owner:** plokar - **Created:** 2/27/2025 - **Last Updated:** 2/27/2025 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ ## Key Components ### + BAT - — [JST B2B PH K 01x02 Connector](https://www.flux.ai/jharwinbarrozo/jst-b2b-ph-k-01x02-connector~zu5.md) - Part Type: Connector - Manufacturer Part Number: B2B-PH-K-S(LF)(SN) - Manufacturer Name: JST Sales America - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811151524_JST-Sales-America-B2B-PH-K-S-LF-SN_C131337.pdf **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### + VIN - — [JST B2B PH K 01x02 Connector](https://www.flux.ai/jharwinbarrozo/jst-b2b-ph-k-01x02-connector~zu5.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811151524_JST-Sales-America-B2B-PH-K-S-LF-SN_C131337.pdf - Manufacturer Name: JST Sales America - Manufacturer Part Number: B2B-PH-K-S(LF)(SN) - Part Type: Connector **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### Q2 — [AO3401A](https://www.flux.ai/jecstronic/ao3401a~9r5.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/2007171935_HUASHUO-AO3401A_C700954.pdf - Manufacturer Part Number: AO3401A - Manufacturer Name: HUASHUO - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Transistor **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### STAT — [LED-0603-Template](https://www.flux.ai/vasy_skral/led-0603-template~ye5.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### U1 — [MCP73844](https://www.flux.ai/vasy_skral/mcp73844~cr.md) - Datasheet URL: https://ww1.microchip.com/downloads/aemDocuments/documents/APID/ProductDocuments/DataSheets/21823D.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Microchip - Manufacturer Part Number: MCP73844T-840I/MS - Part Type: Power Management **Pins:** - DRV [pin 8] - EN [pin 4] - SENSE [pin 1] - STAT1 [pin 3] - TIMER [pin 5] - VBAT [pin 7] - VDD [pin 2] - VSS [pin 6] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/plokar/mcp73844-reference-design~nt](https://www.flux.ai/plokar/mcp73844-reference-design~nt).* --- *Generated from [https://www.flux.ai/plokar/mcp73844-reference-design~nt](https://www.flux.ai/plokar/mcp73844-reference-design~nt)*