# Traditional Bronze Jetpack ## Description Two-Bank 6 V Igniter Firing System with Onboard 2S LiFePO4 Pack, S-8252A Protection, BQ24618 LiFePO4 Charger (3 A, 3.6 V Fast, <50 mA Termination, 3.8 V HPPC, 3.5 V Float), 32 SOT-223 MOSFET Outputs via MCP23017, with Reserved PCB Areas for Dual 26650 Holders, 34-pin IDC, and Barrel Jack Input #LiFePO4 #Battery #BMS ## Project Details - **Owner:** mikep6345 - **Created:** 1/31/2026 - **Last Updated:** 1/31/2026 - **Visibility:** Public - **Safety Function:** Two-bank 6 V igniter firing system with independent eFuse protection and low-droop power path, controlled by ESP32-S3 with GPIO expansion for multiple ignition channels. - **Power Architecture Summary:** 2S LiFePO4 pack with S-8252A protection, BQ24618 charger, TPS54821 6 V buck feeding dual TPS25982 eFuse banks, each with bulk capacitance sized to support up to 6 A with ≤0.10 V droop over a 1 s pulse, and brought out to a 34-pin IDC connector; ESP32-S3 and dual MCP23017 expanders powered from MP1584 3.3 V buck for control of two independent igniter banks. - **Channel Mapping Summary:** 4 positions × 4 igniters per side; channels 1–16 in Bank A; 17–32 in Bank B - **Power Requirements:** Battery - **Reference Design URL:** https://www.ti.com/lit/ds/symlink/bq24618.pdf - **Reliability Target (MTBF):** 10000hours - **License:** http://solderpad.org/licenses/SHL-2.1/ - **Software:** Arduino - **Connectivity:** WiFi - **Domain:** Energy - **System Topology Diagram:** flowchart TD H1["26650 Holder 1"] --> H2["26650 Holder 2"] H2 --> P1["S-8252A Protector"] P1 --> P2["BQ24618 Charger"] P2 --> P3["TPS54821 6V Buck"] P3 --> F1["TPS25982 eFuse Bank A"] P3 --> F2["TPS25982 eFuse Bank B"] F1 --> J1["34-pin IDC Connector"] F2 --> J1 subgraph Control U1["MP1584 3.3V Buck"] --> U2["ESP32-S3"] U2 --> U3["MCP23017 Expander 1"] U2 --> U4["MCP23017 Expander 2"] end - **Manufacturing Quantity Target:** 25 ## Key Components ### BAT1 — [26650](https://www.flux.ai/jecstronic/26650~s1q.md) - Manufacturer Part Number: 1106 - Role Details: Holder for two 26650 LiFePO4 cells in series - Role: Mechanical - Manufacturer Name: Keystone Electronics - Part Type: Connector - Datasheet URL: https://www.keyelco.com/product-pdf.cfm?p=14076 **Pins:** - NEGATIVE [pin N] - POSITIVE [pin P] ### BAT2 — [26650](https://www.flux.ai/jecstronic/26650~s1q.md) - Role Details: Holder for two 26650 LiFePO4 cells in series - Datasheet URL: https://www.keyelco.com/product-pdf.cfm?p=14076 - Part Type: Connector - Manufacturer Name: Keystone Electronics - Role: Mechanical - Manufacturer Part Number: 1106 **Pins:** - NEGATIVE [pin N] - POSITIVE [pin P] ### J1 — X9555WV-2x17-PTV01 - Connector Rows: 2 - Role Details: 34-pin right-angle 2.54 mm IDC ribbon connector: pins 1,3,5,7 carry +6 V to Bank A channels 1–4; pins 9,11,13,15 carry +6 V to Bank A channels 5–8; pins 2,4,6,8 & 10,12,14,16 serve ground returns for respective Bank A channels; pins 17,19,21,23 & 25,27,29,31 carry +6 V to Bank B channels 17–20 & 21–24; pins 18,20,22,24 & 26,28,30,32 serve ground returns for respective Bank B channels; pins 33–34 reserved for board-edge +6 V feed per bank. - Mount: Through Hole - Manufacturer Part Number: X9555WV-2x17-PTV01 - Connector Type: Headers and Wire Housings - Manufacturer Name: XKB Connection(中国星坤) - LCSC Part Number: C707014 - Product Info Url: https://lcsc.com/product-detail/IDC-Connectors_XKB-Connectivity-X9555WV-2-17-PTV01_C707014.html - Connector Gender: Receptacle - Connector Positions: 34 - Package or Case Code: CONN-TH_X9555WV-2-17-PTV01 - Part Type: Connector - Role: Power Distribution - Connector Pitch: 2.54mm - Datasheet URL: https://assets.lcsc.com/datasheet/szlcsc/Download-ISO9001-Certification.pdf **Pins:** - 1 [pin 1] - 10 [pin 10] - 11 [pin 11] - 12 [pin 12] - 13 [pin 13] - 14 [pin 14] - 15 [pin 15] - 16 [pin 16] - 17 [pin 17] - 18 [pin 18] - 19 [pin 19] - 2 [pin 2] - 20 [pin 20] - 21 [pin 21] - 22 [pin 22] - 23 [pin 23] - 24 [pin 24] - 25 [pin 25] - 26 [pin 26] - 27 [pin 27] - 28 [pin 28] - 29 [pin 29] - 3 [pin 3] - 30 [pin 30] - 31 [pin 31] - 32 [pin 32] - 33 [pin 33] - 34 [pin 34] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] ### J2 — [PJ-011A](https://www.flux.ai/jecstronic/pj-011a~w4v.md) - Role Details: Barrel jack power input, 2.1mm ID / 5.5mm OD - Role: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Datasheet URL: https://www.cuidevices.com/product/resource/pj-011a.pdf - Manufacturer Name: CUI Devices - Manufacturer Part Number: PJ-011A **Pins:** - ~ [pin 2] - ~ [pin 1] - ~ [pin 3] ### Q33 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - Manufacturer Part Number: IRFL210TRPBF - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q34 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Manufacturer Part Number: IRFL210TRPBF - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q35 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Manufacturer Part Number: IRFL210TRPBF - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q36 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Manufacturer Part Number: IRFL210TRPBF - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q37 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - Manufacturer Part Number: IRFL210TRPBF - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q38 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Manufacturer Part Number: IRFL210TRPBF - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q39 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Manufacturer Part Number: IRFL210TRPBF - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q40 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Manufacturer Part Number: IRFL210TRPBF - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q41 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - Manufacturer Part Number: IRFL210TRPBF - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q42 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Manufacturer Part Number: IRFL210TRPBF - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q43 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Manufacturer Part Number: IRFL210TRPBF - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q44 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Manufacturer Part Number: IRFL210TRPBF - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q45 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Manufacturer Part Number: IRFL210TRPBF - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q46 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Manufacturer Part Number: IRFL210TRPBF - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q47 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Manufacturer Part Number: IRFL210TRPBF - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q48 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Manufacturer Part Number: IRFL210TRPBF **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q49 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Manufacturer Part Number: IRFL210TRPBF - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q50 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Manufacturer Part Number: IRFL210TRPBF - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q51 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Manufacturer Part Number: IRFL210TRPBF - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q52 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Manufacturer Part Number: IRFL210TRPBF - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q53 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Manufacturer Part Number: IRFL210TRPBF - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q54 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - Manufacturer Part Number: IRFL210TRPBF - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q55 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Manufacturer Part Number: IRFL210TRPBF - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q56 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - Manufacturer Part Number: IRFL210TRPBF - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q57 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Manufacturer Part Number: IRFL210TRPBF - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q58 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - Manufacturer Part Number: IRFL210TRPBF - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q59 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Manufacturer Part Number: IRFL210TRPBF - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q60 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Manufacturer Part Number: IRFL210TRPBF - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q61 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Manufacturer Part Number: IRFL210TRPBF - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q62 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Manufacturer Part Number: IRFL210TRPBF - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q63 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Manufacturer Part Number: IRFL210TRPBF - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - LCSC Part Number: C469333 **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### Q64 — [IRFL210TRPBF](https://www.flux.ai/lcsc/irfl210trpbf~xzlu.md) - LCSC Part Number: C469333 - Package or Case Code: SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR - Manufacturer Part Number: IRFL210TRPBF - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2003201706_Vishay-Intertech-IRFL210TRPBF_C469333.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_Vishay-Intertech-IRFL210TRPBF_C469333.html - Manufacturer Name: VISHAY(威世) - Part Type: MOSFETs **Pins:** - D [pin 2] - D [pin 4] - G [pin 1] - S [pin 3] ### U1 — [MCP23017T-E-SO](https://www.flux.ai/jecstronic/mcp23017t-e-so~jo8.md) - Manufacturer Part Number: MCP23017T-E/SO - Manufacturer Name: Microchip - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Datasheet URL: http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en023709 **Pins:** - ~RESET~ [pin 18] - A0 [pin 15] - A1 [pin 16] - A2 [pin 17] - GPA0 [pin 21] - GPA1 [pin 22] - GPA2 [pin 23] - GPA3 [pin 24] - GPA4 [pin 25] - GPA5 [pin 26] - GPA6 [pin 27] - GPA7 [pin 28] - GPB0 [pin 1] - GPB1 [pin 2] - GPB2 [pin 3] - GPB3 [pin 4] - GPB4 [pin 5] - GPB5 [pin 6] - GPB6 [pin 7] - GPB7 [pin 8] - INTA [pin 20] - INTB [pin 19] - NC [pin 11] - NC [pin 14] - SCK [pin 12] - SDA [pin 13] - VDD [pin 9] - VSS [pin 10] ### U2 — [MCP23017T-E-SO](https://www.flux.ai/jecstronic/mcp23017t-e-so~jo8.md) - Manufacturer Name: Microchip - Manufacturer Part Number: MCP23017T-E/SO - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Datasheet URL: http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en023709 **Pins:** - ~RESET~ [pin 18] - A0 [pin 15] - A1 [pin 16] - A2 [pin 17] - GPA0 [pin 21] - GPA1 [pin 22] - GPA2 [pin 23] - GPA3 [pin 24] - GPA4 [pin 25] - GPA5 [pin 26] - GPA6 [pin 27] - GPA7 [pin 28] - GPB0 [pin 1] - GPB1 [pin 2] - GPB2 [pin 3] - GPB3 [pin 4] - GPB4 [pin 5] - GPB5 [pin 6] - GPB6 [pin 7] - GPB7 [pin 8] - INTA [pin 20] - INTB [pin 19] - NC [pin 11] - NC [pin 14] - SCK [pin 12] - SDA [pin 13] - VDD [pin 9] - VSS [pin 10] ### U3 — [ESP32-S3-WROOM-1-N8R8](https://www.flux.ai/adrian95/esp32-s3-wroom-1-n8r8~na1.md) - Manufacturer Part Number: ESP32-S3-WROOM-1-N8R8 - Part Type: Module - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdf - Manufacturer Name: Espressif Systems - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 3V3 [pin 2] - EN [pin 3] - GND [pin 41_8] - GND [pin 41_2] - GND [pin 41_3] - GND [pin 41_1] - GND [pin 41_5] - GND [pin 41_7] - GND [pin 40] - GND [pin 41_9] - GND [pin 41_4] - GND [pin 1] - GND [pin 41_6] - IO0 [pin 27] - IO1 [pin 39] - IO10 [pin 18] - IO11 [pin 19] - IO12 [pin 20] - IO13 [pin 21] - IO14 [pin 22] - IO15 [pin 8] - IO16 [pin 9] - IO17 [pin 10] - IO18 [pin 11] - IO19 [pin 13] - IO2 [pin 38] - IO20 [pin 14] - IO21 [pin 23] - IO3 [pin 15] - IO35 [pin 28] - IO36 [pin 29] - IO37 [pin 30] - IO38 [pin 31] - IO39 [pin 32] - IO4 [pin 4] - IO40 [pin 33] - IO41 [pin 34] - IO42 [pin 35] - IO45 [pin 26] - IO46 [pin 16] - IO47 [pin 24] - IO48 [pin 25] - IO5 [pin 5] - IO6 [pin 6] - IO7 [pin 7] - IO8 [pin 12] - IO9 [pin 17] - RXD0 [pin 36] - TXD0 [pin 37] ### U4 — [S-8252AAH-M6T1U](https://www.flux.ai/lcsc/s-8252aah-m6t1u~th1e.md) - Undervoltage Threshold Voltage: 4V - Role Details: Battery protection for 2S LiFePO4 pack - Role: Protection - Overvoltage Threshold Voltage: 7.6V - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.7-BL - Manufacturer Part Number: S-8252AAH-M6T1U - Manufacturer Name: ABLIC(艾普凌科) - LCSC Part Number: C468215 - Part Type: Battery Management ICs **Pins:** - CO [pin 2] - DO [pin 1] - VC [pin 4] - VDD [pin 5] - VM [pin 3] - VSS [pin 6] ### U5 — [BQ24618RGET](https://www.flux.ai/lcsc/bq24618rget~5ksr.md) - Manufacturer Part Number: BQ24618RGET - ICHG: 3A - Package or Case Code: VQFN-24_L4.0-W4.0-P0.50-TL-EP - Termination Current: <50mA - Fast Charge Voltage: 3.6 V/cell - Product Info Url: https://lcsc.com/product-detail/PMIC-Battery-Management_TI_BQ24618RGET_BQ24618RGET_C202170.html - HPPC Voltage: 3.8 V/cell - JLCPCB Part Class: Extended Part - Manufacturer Name: TI(德州仪器) - Float Voltage: 3.5 V/cell - LCSC Part Number: C202170 - Role: Power Management - Part Type: Battery Management ICs - Role Details: Charger IC for 2S LiFePO4 pack from 12 V, 3 A barrel-jack input - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1809172050_Texas-Instruments-BQ24618RGET_C202170.pdf **Pins:** - #ACDRV [pin 3] - #BATDRV [pin 23] - #PG [pin 8] - ACN [pin 1] - ACP [pin 2] - ACSET [pin 16] - BTST [pin 22] - CE [pin 4] - EP [pin 25] - GND [pin 17] - HIDRV [pin 21] - ISET1 [pin 11] - ISET2 [pin 15] - LODRV [pin 19] - PH [pin 20] - REGN [pin 18] - SATA2 [pin 9] - SRN [pin 13] - SRP [pin 14] - STAT1 [pin 5] - TS [pin 6] - TTC [pin 7] - VCC [pin 24] - VFB [pin 12] - VREF [pin 10] ### U6 — [TPS54821RHLR](https://www.flux.ai/jecstronic/tps54821rhlr~8vx.md) - Manufacturer Name: Texas Instruments - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Ftps54821 - Part Type: Integrated Circuit - Package: 14-VFQFN - Role: Power Conversion - Manufacturer Part Number: TPS54821RHLR - Role Details: 6 V buck regulator for igniter bank power supply **Pins:** - BOOT [pin 13] - COMP [pin 8] - EN [pin 10] - EXP [pin 15] - EXP__1 [pin 16] - EXP__2 [pin 17] - EXP__3 [pin 18] - EXP__4 [pin 19] - GND_2 [pin 2] - GND_3 [pin 3] - PH_11 [pin 11] - PH_12 [pin 12] - PVIN_4 [pin 4] - PVIN_5 [pin 5] - PWRGD [pin 14] - RT/CLK [pin 1] - SS/TR [pin 9] - VIN [pin 6] - VSENSE [pin 7] ### U7 — [TPS259824ONRGET](https://www.flux.ai/lcsc/tps259824onrget~eim.md) - Package: VQFN-24_L4.0-W4.0-P0.50-BL-EP - Package or Case Code: VQFN-24_L4.0-W4.0-P0.50-BL-EP - Role Details: Overcurrent and backflow protection for Bank A 6 V rail - Manufacturer Part Number: TPS259824ONRGET - JLCPCB Part Class: Extended Part - LCSC Part Number: C2155759 - Role: Protection - Manufacturer Name: TI(德州仪器) **Pins:** - dVdt [pin 15] - EN/UVLO [pin 6] - GND [pin 4] - GND [pin 5] - GND [pin 14] - GND [pin 26] - ILIM [pin 8] - IMON [pin 9] - IN [pin 1] - IN [pin 2] - IN [pin 3] - IN [pin 16] - IN [pin 25] - ITIMER [pin 7] - LDSTRT [pin 12] - NRETRY [pin 11] - OUT [pin 17] - OUT [pin 18] - OUT [pin 19] - OUT [pin 20] - OUT [pin 21] - OUT [pin 22] - OUT [pin 23] - OUT [pin 24] - PG [pin 13] - RETRY_DLY [pin 10] ### U8 — [TPS259824ONRGET](https://www.flux.ai/lcsc/tps259824onrget~eim.md) - Manufacturer Name: TI(德州仪器) - LCSC Part Number: C2155759 - Role: Protection - Manufacturer Part Number: TPS259824ONRGET - JLCPCB Part Class: Extended Part - Package or Case Code: VQFN-24_L4.0-W4.0-P0.50-BL-EP - Package: VQFN-24_L4.0-W4.0-P0.50-BL-EP - Role Details: Overcurrent and backflow protection for Bank B 6 V rail **Pins:** - dVdt [pin 15] - EN/UVLO [pin 6] - GND [pin 4] - GND [pin 5] - GND [pin 14] - GND [pin 26] - ILIM [pin 8] - IMON [pin 9] - IN [pin 1] - IN [pin 2] - IN [pin 3] - IN [pin 16] - IN [pin 25] - ITIMER [pin 7] - LDSTRT [pin 12] - NRETRY [pin 11] - OUT [pin 17] - OUT [pin 18] - OUT [pin 19] - OUT [pin 20] - OUT [pin 21] - OUT [pin 22] - OUT [pin 23] - OUT [pin 24] - PG [pin 13] - RETRY_DLY [pin 10] ### U9 — [MP1584EN-LF-P](https://www.flux.ai/adrian95/mp1584en-lf-p~qkw.md) - Datasheet URL: https://www.mouser.com/datasheet/2/277/MP1584EN_LF_Z-2945524.pdf - Part Type: Integrated Circuit - Manufacturer Part Number: MP1584EN-LF-P - Manufacturer Name: Monolithic Power Systems Inc. - Role: Power Conversion - Role Details: 3.3 V buck regulator for ESP32-S3 and logic power - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - BST [pin 8] - COMP [pin 3] - EN [pin 2] - FB [pin 4] - FREQ [pin 6] - GND [pin 5] - PAD [pin 9] - SW [pin 1] - VIN [pin 7] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/mikep6345/traditional-bronze-jetpack~u3](https://www.flux.ai/mikep6345/traditional-bronze-jetpack~u3).* --- *Generated from [https://www.flux.ai/mikep6345/traditional-bronze-jetpack~u3](https://www.flux.ai/mikep6345/traditional-bronze-jetpack~u3)*