TMI3331

{
  "slug": "tmi3331",
  "version": "0.1.0",
  "type": "component",
  "description": "TMI DC-DC Converters, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "tmi3331",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tmi3331.kicad_sym",
    "tmi3331.kicad_mod",
    "tmi3331.glb",
    "tmi3331.step",
    "tmi3331.lbr",
    "docs/hero.png",
    "docs/tmi3331-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tmi3331-hero.glb",
    "tmi3331-hero.overlay.json",
    "tmi3331-etched.glb"
  ],
  "component": {
    "mpn": "TMI3331",
    "manufacturer": "TMI",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603008212798873600",
    "parts": {
      "symbol": "tmi3331.kicad_sym",
      "footprint": "tmi3331.kicad_mod",
      "model_3d": "tmi3331-hero.glb",
      "model_3d_plain": "tmi3331-etched.glb",
      "model_3d_step": "tmi3331-etched.step",
      "model_3d_step_plain": "tmi3331.step",
      "lbr": "tmi3331.lbr"
    },
    "distributor_links": {
      "lcsc": "C7470272"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T19:26:22Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BS",
        "type": "power_in",
        "description": "High-side gate driver bias pin that supplies the high-side LDMOS gate driver, requiring a 100nF capacitor between BS and SW (absolute maximum BS-to-SW voltage is -0.3 to 6 V)."
      },
      {
        "number": "2",
        "name": "IN",
        "type": "power_in",
        "description": "Power input pin, with a recommended operating voltage range of 8 V to 30 V and an absolute maximum of 36 V for surge conditions."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "output",
        "description": "Switch pin that connects to the external inductor; the absolute maximum SW voltage is -0.3 to 36 V."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground pin for the converter."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback pin that regulates to an internal 0.8 V reference (784 mV to 816 mV), with input current limited to ±50 nA."
      },
      {
        "number": "6",
        "name": "CS",
        "type": "input",
        "description": "Output current sense pin for constant current limit; the CC current is set by a resistor Rcs between CS and GND, giving ILIM = 61.7 mV / Rcs, and CS can be tied to GND to use the internal cycle-by-cycle peak current limit."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Enable pin, with a logic high threshold of at least 1.5 V and a logic low threshold of at most 0.3 V."
      },
      {
        "number": "8",
        "name": "FSW",
        "type": "input",
        "description": "Switching frequency set pin; a resistor sets the frequency from 130 kHz (floating) to 500 kHz (shorted to GND), with RFSW = 300 kΩ giving 310 kHz typical."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Ground exposed pad that must be connected to the power ground copper area with copper and vias for heat dissipation and noise immunity."
      }
    ],
    "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 configuration diagram on page 3 is garbled in the extracted text. Pin numbers and names were; Pin 9 is the exposed thermal pad, not a numbered lead. It is listed as GND (Exposed PAD) in the data; The datasheet does not state an electrical type for each pin. Types (BS as power_in, SW as output, F"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0536,
        "at": "2026-10-18T19:24:00"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603008212798873600",
        "pages": 12,
        "sha256": "2839d7b5e08d9017",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tmi3331.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tmi3331-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "38b8e69dc511268c8b63aa5071329507feb3166833c14a456c1731466b197c95",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}