TMI3255SF

{
  "schema_version": 1,
  "type": "component",
  "slug": "tmi3255sf",
  "title": "TMI3255SF",
  "brief": "TMI DC-DC Converters, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "tmi3255sf"
  ],
  "component": {
    "mpn": "TMI3255SF",
    "manufacturer": "TMI",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b07d4153281f102646b9e7c1e1595d79.pdf",
    "parts": {
      "symbol": "tmi3255sf.kicad_sym",
      "footprint": "tmi3255sf.kicad_mod",
      "model_3d": "tmi3255sf-etched.glb",
      "model_3d_plain": "tmi3255sf.glb",
      "model_3d_step": "tmi3255sf-etched.step",
      "model_3d_step_plain": "tmi3255sf.step",
      "lbr": "tmi3255sf.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback input. Connect FB to the center point of the external resistor divider. Regulated feedback voltage is 0.6V (±1.5%). FB input leakage is ±0.5µA max."
      },
      {
        "number": "2",
        "name": "EN",
        "type": "input",
        "description": "Enable input. Drive high (>1.05V typ, 1.20V max) to enable the IC; drive low (<0.90V) to disable and enter micro-power shutdown mode. Do not float EN. Max input rating 20V; 120mV hysteresis; 300µs enable delay."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin. Return for the low-side MOSFET and all internal circuitry. Connect to a large copper area for thermal performance."
      },
      {
        "number": "4",
        "name": "IN",
        "type": "power_in",
        "description": "Power supply input pin. Accepts 4.5V to 18V (20V absolute max). Bypass with a ceramic capacitor placed close to the pin. OVP threshold ~19V typ."
      },
      {
        "number": "5",
        "name": "LX",
        "type": "power_out",
        "description": "Switching node. Connect to the external inductor. Internal high-side and low-side MOSFETs switch this node between IN and GND. Absolute max -0.3V to 20V (-4.5V to 22V for <10ns transients)."
      },
      {
        "number": "6",
        "name": "BS",
        "type": "passive",
        "description": "Bootstrap pin. A capacitor (typ 0.1µF) connected between BS and LX forms a floating supply for the high-side MOSFET gate driver. Absolute max 23V referenced to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/b07d4153281f102646b9e7c1e1595d79.pdf",
        "pages": 14,
        "sha256": "6f4c0c6a566eb888",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tmi3255sf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tmi3255sf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "796ee690bb1943fd2e422d0cc3dc87817cf64e61ab22075311abfd12b937fb47",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TMI",
      "Package": "SOT-23-6",
      "Category": "PMIC",
      "Pins": "6"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tmi3255sf"
  ],
  "discovery_pitch": "TMI3255SF (TMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tmi3255sf.kicad_sym",
    "tmi3255sf.kicad_mod",
    "tmi3255sf.glb",
    "tmi3255sf.step",
    "tmi3255sf.lbr",
    "docs/hero.png",
    "docs/tmi3255sf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tmi3255sf-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "TMI3255SF",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T11:01:20.532Z"
}