# Docking Board Power Input 5V Buck ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** ehluke - **Created:** 4/14/2026 - **Last Updated:** 4/14/2026 - **Visibility:** Public ## Key Components ### D1 — [SMCJ43A](https://www.flux.ai/lcsc/smcj43a~yo2j.md) - LCSC Part Number: C2994052 - Role Details: TVS diode from VBAT_FUSED to GND for surge suppression - Role: Input TVS - Package or Case Code: SMC_L6.9-W5.9-LS7.9-RD - Manufacturer Name: MDD(辰达半导体) - Manufacturer Part Number: SMCJ43A - JLCPCB Part Class: Extended Part - Part Type: TVS - Package: DO-214AB **Pins:** - A [pin 2] - C [pin 1] ### D2 — [B560C-13-F](https://www.flux.ai/adrian95/b560c-13-f~d84.md) - Package: SMC - Manufacturer Name: Diodes Incorporated - Manufacturer Part Number: B560C-13-F - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.diodes.com/assets/Datasheets/B520C-B560C.pdf - Role: Buck catch diode - Role Details: Schottky freewheel diode with cathode on PH and anode on GND **Pins:** - A [pin 2] - K [pin 1] ### F1 — [0685P7000-01](https://www.flux.ai/adrian95/0685p7000-01~du9.md) - License: https://creativecommons.org/licenses/by/4.0/ - Package: 1206 - Manufacturer Name: Bel Fuse Inc. - Role: Input fuse - Datasheet URL: https://belfuse.com/media/datasheets/products/circuit-protection/ds-CP-0685P-series.pdf - Part Type: Fuse - Role Details: Slow-blow fuse in series from VBAT_RAW to VBAT_FUSED - Manufacturer Part Number: 0685P7000-01 **Pins:** - P1 [pin 1] - P2 [pin 2] ### H1 — [MountingHole 7.4mm Pad 3.2mm drill](https://www.flux.ai/adrian95/mountinghole-74mm-pad-32mm-drill~7o1.md) - Manufacturer Part Number: MountingHole_Pad **Pins:** - 1 ### H2 — [MountingHole 7.4mm Pad 3.2mm drill](https://www.flux.ai/adrian95/mountinghole-74mm-pad-32mm-drill~7o1.md) - Manufacturer Part Number: MountingHole_Pad **Pins:** - 1 ### H3 — [MountingHole 7.4mm Pad 3.2mm drill](https://www.flux.ai/adrian95/mountinghole-74mm-pad-32mm-drill~7o1.md) - Manufacturer Part Number: MountingHole_Pad **Pins:** - 1 ### H4 — [MountingHole 7.4mm Pad 3.2mm drill](https://www.flux.ai/adrian95/mountinghole-74mm-pad-32mm-drill~7o1.md) - Manufacturer Part Number: MountingHole_Pad **Pins:** - 1 ### J1 — DF40C-50DP-0.4V(58) - JLCPCB Part Class: Extended Part - Role: Docking board input connector - Package: CONN-SMD - Manufacturer Part Number: EX80-54P-SH(70) - Product Info Url: https://lcsc.com/product-detail/presales_HRS-Hirose-HRS-DF40C-50DP-0-4V-58_C597937.html - Footprint: Custom — TBD, requires manual footprint creation - Part Type: Mezzanine Connectors (Board to Board) - Package or Case Code: Custom — TBD, requires manual footprint creation - Description: 54-pin EX80 series high-speed board connector, 70mm version - Part Name: EX80-54P-SH(70) - LCSC Part Number: C597937 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_HRS-Hirose-DF40C-50DP-0-4V-58_C597937.pdf - Implementation Details: J1 footprint requires custom PCB land pattern based on EX80-54P-SH(70) Hirose datasheet. Verify pin numbering A/B/C row layout before PCB routing. Unassigned J1 pins are reserve/NC — no connection intended - Manufacturer Name: Hirose - Role Details: Placeholder 54-pin connector for VBAT_RAW, GND, payload I2C, USB, detect, reset, and MX differential pairs **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] - 35 [pin 35] - 36 [pin 36] - 37 [pin 37] - 38 [pin 38] - 39 [pin 39] - 4 [pin 4] - 40 [pin 40] - 41 [pin 41] - 42 [pin 42] - 43 [pin 43] - 44 [pin 44] - 45 [pin 45] - 46 [pin 46] - 47 [pin 47] - 48 [pin 48] - 49 [pin 49] - 5 [pin 5] - 50 [pin 50] - 51 [pin 51] - 52 [pin 52] - 53 [pin 53] - 54 [pin 54] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] ### J2 — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal~s4.md) - Manufacturer Part Number: 691137710002 - Part Type: Connector - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf - Package: TerminalBlock_1x02 - Manufacturer Name: Würth Elektrik - Role Details: 2-pin output connector carrying 5V_REG and GND - Role: 5V output connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### J3 — [61300411121](https://www.flux.ai/adrian95/61300411121~pw9.md) - Package or Case Code: HDRV4W95P0X254_1X4_1016X254X854P - Role Details: 1x4 CTRL Reserve header for PAYLOAD_SDA, PAYLOAD_SCL, RESET_IN#, and GND - Role: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 61300411121 - Datasheet URL: https://www.we-online.com/components/products/datasheet/61300411121.pdf - Package: Through Hole - Manufacturer Name: Wurth Elektronik - Part Type: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J5 — [61300411121](https://www.flux.ai/adrian95/61300411121~pw9.md) - Role: Connector - Role Details: 1x4 USB Reserve header for USB0D_P, USB0D_N, USB0_VBUS, and GND - Package: Through Hole - Datasheet URL: https://www.we-online.com/components/products/datasheet/61300411121.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 61300411121 - Part Type: Connector - Manufacturer Name: Wurth Elektronik - Package or Case Code: HDRV4W95P0X254_1X4_1016X254X854P **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J6 — [640456-8](https://www.flux.ai/adrian95/640456-8~4qu.md) - Connector Gender: Male - Role Details: 1x8 ETH Reserve header for MXA, MXB, MXC, and MXD differential pairs; no termination on this board - Package or Case Code: SHDR8W66P0X254_1X8_2032X572X1024P - Package: Through Hole - Manufacturer Name: TE Connectivity - License: https://creativecommons.org/licenses/by/4.0/ - Connector Positions: 8 - Role: Connector - Datasheet URL: https://datasheet.datasheetarchive.com/originals/distributors/Datasheets_SAMA/53b6d75d7446c4158b7609f45acef8cd.pdf - Connector Pitch: 2.54mm - Connector Type: Headers and Wire Housings - Part Type: Connector - Connector Rows: 1 - Manufacturer Part Number: 640456-8 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] ### J7 — [2-644861-2](https://www.flux.ai/adrian95/2-644861-2~vfq.md) - Part Type: Connector - Role: External switch header - License: https://creativecommons.org/licenses/by/4.0/ - Package: PinHeader_1x02 - Manufacturer Part Number: 2-644861-2 - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=644861&DocType=Customer+Drawing&DocLang=English&PartCntxt=2-644861-2&DocFormat=pdf - Manufacturer Name: TE Connectivity AMP Connectors - Role Details: 2-pin header/wire pad between protected battery input and system raw rail **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J8 — [TSW-103-07-G-S](https://www.flux.ai/adrian95/tsw-103-07-g-s~876.md) - Manufacturer Part Number: TSW-103-07-G-S - Role: NanoPi I2C header - Manufacturer Name: Samtec Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Package: PinHeader_1x03 - Datasheet URL: https://suddendocs.samtec.com/prints/tsw-xxx-xx-x-x-xx-xxx-footprint.pdf - Role Details: 3-pin header carrying GND, NPI_SDA, and NPI_SCL to the NanoPi **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### Q1 — [CSD19537Q3T](https://www.flux.ai/lcsc/csd19537q3t~x22t.md) - Package or Case Code: VSONP-8_L3.3-W3.3-P0.65-BL - Manufacturer Part Number: CSD19537Q3T - JLCPCB Part Class: Extended Part - Role: Protection pass FET - Manufacturer Name: TI(德州仪器) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410121330_Texas-Instruments-CSD19537Q3T_C134143.pdf - Part Type: MOSFETs - LCSC Part Number: C134143 - Implementation Details: MPN: NTMTSC4D2N10GTXG — replace placeholder when available - Package: VSONP-8_L3.3-W3.3-P0.65-BL - Role Details: External N-channel MOSFET used with LM5060 to create VBAT_PROT - Product Info Url: https://lcsc.com/product-detail/MOSFET_TI_CSD19537Q3T_CSD19537Q3T_C134143.html **Pins:** - D [pin 5] - D [pin 6] - D [pin 7] - D [pin 8] - D [pin 9] - G [pin 4] - S [pin 2] - S [pin 1] - S [pin 3] ### TP7 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point~b9.md) - Package: SMD Test Point - Role: Battery monitor test point - Role Details: VBAT_MON debug point for divided SYS_RAW measurement **Pins:** - P1 ### TP8 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point~b9.md) - Implementation Details: LM5060 Power Good output, active-low. Monitor during debug. NC in normal operation. **Pins:** - P1 ### U1 — [LM5060MM/NOPB](https://www.flux.ai/adrian95/lm5060mmnopb~n48.md) - Manufacturer Name: Texas Instruments - Role Details: LM5060 controller for protected VBAT path using external MOSFET - 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%2Flm5060 - Package: VSSOP-10 - Manufacturer Part Number: LM5060MM/NOPB - Part Type: Integrated Circuit - Role: High-side protection controller **Pins:** - ~PGD [pin 8] - EN [pin 5] - GATE [pin 10] - GND [pin 6] - OUT [pin 9] - OVP [pin 3] - SENSE [pin 1] - TIMER [pin 7] - UVLO [pin 4] - VIN [pin 2] ### U2 — [TPS54560DDAR](https://www.flux.ai/adrian95/tps54560ddar~fp5.md) - Manufacturer Name: Texas Instruments - Manufacturer Part Number: TPS54560DDAR - Role Details: TPS54560 buck converter producing 5V_REG from SYS_RAW - Role: 5V buck regulator - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps54560.pdf - Package: HSOP PowerPAD **Pins:** - BOOT [pin 1] - COMP [pin 6] - EN [pin 3] - EP [pin 9] - FB [pin 5] - GND [pin 7] - RT/CLK [pin 4] - SW [pin 8] - VIN [pin 2] ### U3 — [TPS78233DDC](https://www.flux.ai/kicad-part-library/tps78233ddc~48w.md) - Datasheet URL: http://www.ti.com/lit/gpn/tps782 - Package or Case Code: SOT-23-5 - Role: 3.3V monitor LDO - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: TPS78233DDC - Role Details: Converts 5V_REG to 3V3_MON for the battery monitor ADC section - Package: SOT-23-5 **Pins:** - EN [pin 3] - GND [pin 4] - GND [pin 2] - IN [pin 1] - OUT [pin 5] ### U4 — [ADS1115IDGSR](https://www.flux.ai/adrian95/ads1115idgsr~3y9.md) - Manufacturer Part Number: ADS1115IDGSR - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments - Package: VSSOP-10 - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fads1113 - Role: Battery monitor ADC - Implementation Details: ALERT/RDY intentionally unconnected — NC - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: ADS1115 monitors the divided SYS_RAW voltage on AIN0 and reports over I2C **Pins:** - ADDR [pin 1] - AIN0 [pin 4] - AIN1 [pin 5] - AIN2 [pin 6] - AIN3 [pin 7] - ALERT/RDY [pin 2] - GND [pin 3] - SCL [pin 10] - SDA [pin 9] - VDD [pin 8] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ehluke/docking-board-power-input-5v-buck](https://www.flux.ai/ehluke/docking-board-power-input-5v-buck).* --- *Generated from [https://www.flux.ai/ehluke/docking-board-power-input-5v-buck](https://www.flux.ai/ehluke/docking-board-power-input-5v-buck)*