PL8405Q

{
  "slug": "pl8405q",
  "version": "0.1.0",
  "type": "component",
  "description": "POWLICON DC-DC Converters, QFN-48(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "pl8405q",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "pl8405q.kicad_sym",
    "pl8405q.kicad_mod",
    "pl8405q.glb",
    "pl8405q.step",
    "pl8405q.lbr",
    "docs/hero.png",
    "docs/pl8405q-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "pl8405q-hero.glb",
    "pl8405q-hero.overlay.json",
    "pl8405q-etched.glb"
  ],
  "component": {
    "mpn": "PL8405Q",
    "manufacturer": "POWLICON",
    "package": "QFN-48(6x6)",
    "pin_count": 49,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590340215799128064",
    "parts": {
      "symbol": "pl8405q.kicad_sym",
      "footprint": "pl8405q.kicad_mod",
      "model_3d": "pl8405q-hero.glb",
      "model_3d_plain": "pl8405q-etched.glb",
      "model_3d_step": "pl8405q-etched.step",
      "model_3d_step_plain": "pl8405q.step",
      "lbr": "pl8405q.lbr"
    },
    "distributor_links": {
      "lcsc": "C5150981"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T09:27:44Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BST1",
        "type": "passive",
        "description": "Boost pin for the high side MOSFET driver; BST to SW absolute maximum is -0.3 V to 7 V."
      },
      {
        "number": "2",
        "name": "D1",
        "type": "bidirectional",
        "description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
      },
      {
        "number": "3",
        "name": "VBAT",
        "type": "power_in",
        "description": "Battery-side supply pin with a 4.5 V to 32 V battery voltage range in the electrical characteristics; the pin description text reads 'Connect to the VBUS rail'."
      },
      {
        "number": "4",
        "name": "CSP1",
        "type": "input",
        "description": "Positive input of the input current sense; CSP1 to CSN1 absolute maximum is -0.3 V to 0.6 V."
      },
      {
        "number": "5",
        "name": "CSN1",
        "type": "input",
        "description": "Minus input of the input current sense; CSP1 to CSN1 absolute maximum is -0.3 V to 0.6 V."
      },
      {
        "number": "6",
        "name": "EN",
        "type": "input",
        "description": "Logic high enables the converter (operation threshold 1.1 V to 1.3 V); logic low disables everything except the LDO."
      },
      {
        "number": "7",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "8",
        "name": "CELLS",
        "type": "input",
        "description": "Connect a resistor divider between VDD and GND to program the number of battery cells (1 to 6)."
      },
      {
        "number": "9",
        "name": "OTG",
        "type": "input",
        "description": "Connect to GND for battery charging mode and to VDD for battery discharging mode; OTG high threshold is 1.2 V."
      },
      {
        "number": "10",
        "name": "TS",
        "type": "input",
        "description": "Battery temperature sense input, used with a voltage divider to set the protection trigger point."
      },
      {
        "number": "11",
        "name": "VDD",
        "type": "power_out",
        "description": "5.4 V power supply for the PL8405Q control core when VBAT is 15 V."
      },
      {
        "number": "12",
        "name": "VADJ",
        "type": "input",
        "description": "Accepts a 0-2 V analog voltage or PWM signal to program the VREF reference; connecting it to VDD forces VREF to 2 V."
      },
      {
        "number": "13",
        "name": "IADJ",
        "type": "input",
        "description": "Accepts a 0-2 V analog voltage or PWM signal to program the IREF reference; connecting it to VDD forces IREF to 2 V."
      },
      {
        "number": "14",
        "name": "VSET",
        "type": "passive",
        "description": "A resistor to GND selects the battery cell type (4.2 V, 4.35 V, 4.4 V or 4.5 V) when OTG is low; above 1.2 V on OTG it carries a voltage proportional to the CSP2-CSN2 difference."
      },
      {
        "number": "15",
        "name": "IREF",
        "type": "output",
        "description": "Reference voltage for the input and output current limiting loop."
      },
      {
        "number": "16",
        "name": "VREF",
        "type": "power_in",
        "description": "Reference voltage for the voltage control loop, 2 V in discharge mode and 1.8 V in charge mode when VADJ is tied to VDD."
      },
      {
        "number": "17",
        "name": "BRCOM",
        "type": "output",
        "description": "Battery internal resistance compensation pin whose voltage is proportional to the CSP1-CSN1 difference for charging current monitoring."
      },
      {
        "number": "18",
        "name": "LDO",
        "type": "power_out",
        "description": "Low quiescent current 5 V/55 mA LDO powered from VBAT that supplies the system MCU and stays active when EN is low."
      },
      {
        "number": "19",
        "name": "STAT",
        "type": "output",
        "description": "Charging status display when OTG is low and power good signal when OTG is high."
      },
      {
        "number": "20",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect PGND and AGND together at the thermal pad under the IC."
      },
      {
        "number": "21",
        "name": "FREQ",
        "type": "input",
        "description": "Switching frequency select: GND gives 150 kHz, VDD gives 300 kHz, and a resistor divider gives 600 kHz or 1200 kHz."
      },
      {
        "number": "22",
        "name": "COMP",
        "type": "passive",
        "description": "Error amplifier output."
      },
      {
        "number": "23",
        "name": "VREG",
        "type": "input",
        "description": "Resistor divider programs the VBUS regulation voltage; the VREG loop reduces charging current when VBUS is pulled down to the VREG setpoint of 1.2 V in charge mode."
      },
      {
        "number": "24",
        "name": "FB2",
        "type": "input",
        "description": "VBUS voltage feedback that regulates to 2 V in discharge mode through a resistor divider between VBUS and GND."
      },
      {
        "number": "25",
        "name": "CSN2",
        "type": "input",
        "description": "Minus input of the output current sense; CSP2 to CSN2 absolute maximum is -0.3 V to 0.6 V."
      },
      {
        "number": "26",
        "name": "CSP2",
        "type": "input",
        "description": "Positive input of the output current sense; CSP2 to CSN2 absolute maximum is -0.3 V to 0.6 V."
      },
      {
        "number": "27",
        "name": "VBUS",
        "type": "power_in",
        "description": "Connect to the VBUS rail; VBUS operating range is 2 V to 30 V in the electrical characteristics."
      },
      {
        "number": "28",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "29",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "30",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "31",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "32",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "33",
        "name": "SW1",
        "type": "output",
        "description": "Switching point 1 of the power stage; SW absolute maximum is -0.3 V to 40 V."
      },
      {
        "number": "34",
        "name": "SW1",
        "type": "output",
        "description": "Switching point 1 of the power stage; SW absolute maximum is -0.3 V to 40 V."
      },
      {
        "number": "35",
        "name": "SW1",
        "type": "output",
        "description": "Switching point 1 of the power stage; SW absolute maximum is -0.3 V to 40 V."
      },
      {
        "number": "36",
        "name": "VCC",
        "type": "power_out",
        "description": "6.6 V power supply for the high side and low side gate drivers."
      },
      {
        "number": "37",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "38",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "39",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "40",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "41",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "42",
        "name": "SW1",
        "type": "output",
        "description": "Switching point 1 of the power stage; SW absolute maximum is -0.3 V to 40 V."
      },
      {
        "number": "43",
        "name": "D1",
        "type": "bidirectional",
        "description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
      },
      {
        "number": "44",
        "name": "D1",
        "type": "bidirectional",
        "description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
      },
      {
        "number": "45",
        "name": "D1",
        "type": "bidirectional",
        "description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
      },
      {
        "number": "46",
        "name": "D1",
        "type": "bidirectional",
        "description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
      },
      {
        "number": "47",
        "name": "D1",
        "type": "bidirectional",
        "description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
      },
      {
        "number": "48",
        "name": "D1",
        "type": "bidirectional",
        "description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
      },
      {
        "number": "49",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin description table says VBAT should 'Connect to the VBUS rail', which contradicts the pin nam; Pin 42 is assigned to SW1 in the pin description table, while the D1 entry lists pins 2 and 43-48. F; SW1 pin assignment is taken from the pin description table; Fig. 3 text extraction is scrambled and ",
          "exposed pad 49 added from the footprint"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0973,
        "at": "2026-10-18T09:22:59"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590340215799128064",
        "pages": 14,
        "sha256": "a32a5014920fede9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "pl8405q.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.02,
          6.02,
          0.9
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d3b4e3ce9915b5749cd764efb424a331e5549b915a06dc85fc32db0d77865f07",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "pl8405q-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
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        "footprint_binding": "identity",
        "sha256": "d8900dddf1dc13d93b7e2981d4594e365b1cbafc6f6c59597c9f81679fa9631d",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}