# Professional Pink Sonic Screwdriver ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** rawatnikunj - **Created:** 3/12/2026 - **Last Updated:** 3/12/2026 - **Visibility:** Public - **System Architecture:** flowchart TD VBAT_IN["VBAT 7V-36V input"] --> F1["F1 30A fuse"] F1 --> Q_RP["Reverse polarity MOSFET SiR626DP"] Q_RP --> TVS["TVS SMDJ40CA to GND_FC"] Q_RP --> C1["C1 1000uF"] C1 --> L_PIFILT["L1 10uH"] L_PIFILT --> VBAT_CLEAN["VBAT_CLEAN"] VBAT_CLEAN --> C2["C2 470uF"] VBAT_CLEAN --> C3["C3 100nF"] VBAT_CLEAN --> BUCK_FC["Buck 5V_ONBOARD (TPS54336A)"] VBAT_CLEAN --> BUCK_SERVO["Buck 5V_SERVO (TPS54336A)"] BUCK_FC --> V5_ONBOARD["5V_ONBOARD"] V5_ONBOARD --> ORING["Ideal diode OR-ing (LTC4357 + Si7461DP)"] BEC_IN["BEC 5V input"] --> SS34["SS34 Schottky"] SS34 --> ORING ORING --> V5_FC_CLEAN["5V_FC_CLEAN"] V5_FC_CLEAN --> J1J2["J1/J2 72-pin connectors"] V5_FC_CLEAN --> ISO_DCDC["Isolated DC-DC 5V->5V (R1SE-0505/HP)"] ISO_DCDC --> V5_ISO["5V_ISOLATED"] V5_ISO --> LDO_ISO["TLV70233 3.3V LDO"] LDO_ISO --> V33_ISO["3.3V_ISOLATED"] V5_ISO --> V5_ALT["5V_ALT (ferrite + caps)"] J1J2 --> ISO7741["ISO7741 isolator"] J1J2 --> ISO7721["ISO7721 isolator"] ISO7721 --> MAX3232["MAX3232 RS232"] subgraph Grounds [Star grounds] GND_FC["GND_FC"] GND_SERVO["GND_SERVO"] GND_ISOLATED["GND_ISOLATED"] end ## Key Components ### D1 — [SMDJ40CA-HR](https://www.flux.ai/lcsc/smdj40ca-hr~pab1.md) - Role Details: Load dump / spike clamp on VBAT after reverse protection (SMDJ40CA) - Part Type: TVS - Manufacturer Part Number: SMDJ40CA-HR - Manufacturer Name: Littelfuse(美国力特) - Role: TVS Protection - LCSC Part Number: C1977194 - Package or Case Code: SMC_L6.9-W5.9-LS7.9-BI - JLCPCB Part Class: Extended Part **Pins:** - A1 [pin 2] - A2 [pin 1] ### F1 — [0297030.WXNV](https://www.flux.ai/adrian95/0297030pwxnv~iwh.md) - Package or Case Code: 0297030WXNV - Manufacturer Name: LITTELFUSE - Role: Overcurrent Protection - Part Type: 0297030.WXNV - Role Details: VBAT input fuse, 30A (closest available to 0287030) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 0297030.WXNV - Datasheet URL: https://www.littelfuse.com//media/automotive/datasheets/fuses/passenger-car-and-commercial-vehicle/blade-fuses/littelfuse_mini_datasheet.pdf **Pins:** - ~ [pin 1] - ~ [pin 2] ### Q1 — [SIR626DP-T1-RE3](https://www.flux.ai/lcsc/sir626dp-t1-re3~7jut.md) - Package or Case Code: POWERPAK-SO-8_L6.2-W5.2-P1.27-BR-EP - Role Details: Reverse polarity MOSFET after input fuse (SiR626DP) - Role: Reverse Protection - JLCPCB Part Class: Extended Part - LCSC Part Number: C467944 - Part Type: MOSFETs - Manufacturer Name: VISHAY(威世) - Manufacturer Part Number: SIR626DP-T1-RE3 **Pins:** - D [pin 6] - D [pin 5] - D [pin 7] - D [pin 8] - G [pin 4] - S [pin 1] - S [pin 2] - S [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/rawatnikunj/professional-pink-sonic-screwdriver~e9](https://www.flux.ai/rawatnikunj/professional-pink-sonic-screwdriver~e9).* --- *Generated from [https://www.flux.ai/rawatnikunj/professional-pink-sonic-screwdriver~e9](https://www.flux.ai/rawatnikunj/professional-pink-sonic-screwdriver~e9)*