MP3437GJ-Z

{
  "slug": "mp3437gj-z",
  "version": "0.1.0",
  "type": "component",
  "description": "Monolithic Power Systems DC-DC Converters, TSOT-23-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "mp3437gj-z",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mp3437gj-z.kicad_sym",
    "mp3437gj-z.kicad_mod",
    "mp3437gj-z.glb",
    "mp3437gj-z.step",
    "mp3437gj-z.lbr",
    "docs/hero.png",
    "docs/mp3437gj-z-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mp3437gj-z-hero.glb",
    "mp3437gj-z-hero.overlay.json",
    "mp3437gj-z-etched.glb"
  ],
  "component": {
    "mpn": "MP3437GJ-Z",
    "manufacturer": "Monolithic Power Systems",
    "package": "TSOT-23-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600558807730692096",
    "parts": {
      "symbol": "mp3437gj-z.kicad_sym",
      "footprint": "mp3437gj-z.kicad_mod",
      "model_3d": "mp3437gj-z-hero.glb",
      "model_3d_plain": "mp3437gj-z-etched.glb",
      "model_3d_step": "mp3437gj-z-etched.step",
      "model_3d_step_plain": "mp3437gj-z.step",
      "lbr": "mp3437gj-z.lbr"
    },
    "distributor_links": {
      "lcsc": "C5776148"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T09:06:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BST",
        "type": "passive",
        "description": "Bootstrap pin; a capacitor between BST and SW powers the synchronous high-side MOSFET (absolute maximum BST is VSW + 4.5V)."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Output pin connected to the drain of the high-side MOSFET (HS-FET); it powers VDD when VOUT is above VIN and VIN is below 3.4V (absolute maximum -0.3V to +18V)."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "passive",
        "description": "Converter switch pin connected to the drain of the low-side MOSFET and the source of the high-side MOSFET; connect the power inductor to SW (absolute maximum -0.3V to +18V, -5V for under 10ns)."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground; the datasheet recommends connecting the analog signal close to this GND pin."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback input; connect a resistor divider from the VOUT pin to the FB pin (absolute maximum -0.3V to +4.5V)."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_out",
        "description": "Internal bias supply that must be decoupled with a 4.7µF ceramic capacitor as close to the pin as possible; the regulator from VIN to VOUT is disabled if the bias voltage exceeds 3.4V, and the maximum external VDD bias is 3.6V."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Chip enable control that programs VIN's under-voltage lockout; it must not be floated and must be pulled up or down externally, and connecting it to VIN gives automatic start-up (absolute maximum -0.3V to +18V)."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply that must be bypassed locally and supplied above 2.7V during start-up to provide enough voltage to VDD (operation range 0.8V to 16V, absolute maximum -0.3V to +18V)."
      }
    ],
    "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: Pin numbers and names are taken from the PIN FUNCTIONS table (page 3), which lists the TSOT23-8 pin ; KiCad ERC type for VDD (power_out), SW (passive) and BST (passive) are judgment calls, since the dat; The QFN-10 pin 4 and 5 both map to TSOT23-8 pin 4 (GND); only pin 4 is listed here for the TSOT pack"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0399,
        "at": "2026-10-18T09:05:55"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600558807730692096",
        "pages": 27,
        "sha256": "9dd3a7e86130a89a",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "mp3437gj-z.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          0.95
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dc644a91883054d8f75e38542e63c2050dc8f2e8b7f12e1c57dcd93245fbd473",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mp3437gj-z-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          0.95
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6ee3bf4317a0d7fa7d25139895b13d4aca7c57a50277cb9bf457775a59fa2ef0",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}