TMI8120

{
  "schema_version": 1,
  "type": "component",
  "slug": "tmi8120",
  "title": "TMI8120",
  "brief": "TMI Stepper Motor Driver, QFN-20-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "motor driver ics",
    "tmi8120",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TMI8120",
    "manufacturer": "TMI",
    "package": "QFN-20-EP(3x3)",
    "pin_count": 21,
    "category": "Motor Driver ICs",
    "subcategory": "Stepper Motor Driver",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590455774162939904",
    "parts": {
      "symbol": "tmi8120.kicad_sym",
      "footprint": "tmi8120.kicad_mod",
      "model_3d": "tmi8120-hero.glb",
      "model_3d_plain": "tmi8120-etched.glb",
      "model_3d_step": "tmi8120-etched.step",
      "model_3d_step_plain": "tmi8120.step",
      "lbr": "tmi8120.lbr"
    },
    "distributor_links": {
      "lcsc": "C5259218"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T02:29:13Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OUT1",
        "type": "output",
        "description": "H-bridge output to connect directly to the motor or other inductive load; channel 1 on-resistance is 550 mΩ typ at 1A load."
      },
      {
        "number": "2",
        "name": "IN2",
        "type": "input",
        "description": "Logic input controlling the H-bridge output; logic high requires at least 2.0V and logic low is 0.8V max, with an internal pulldown to GND."
      },
      {
        "number": "3",
        "name": "IN1",
        "type": "input",
        "description": "Logic input controlling the H-bridge output; logic high requires at least 2.0V and logic low is 0.8V max, with an internal pulldown to GND."
      },
      {
        "number": "4",
        "name": "OUT3",
        "type": "output",
        "description": "H-bridge output to connect directly to the motor or other inductive load; the datasheet lists this pin as OUT3 (see review notes)."
      },
      {
        "number": "5",
        "name": "OUT3",
        "type": "output",
        "description": "H-bridge output to connect directly to the motor or other inductive load; the datasheet lists this pin as OUT3 (see review notes)."
      },
      {
        "number": "6",
        "name": "IN3",
        "type": "input",
        "description": "Logic input controlling the H-bridge output; logic high requires at least 2.0V and logic low is 0.8V max, with an internal pulldown to GND."
      },
      {
        "number": "7",
        "name": "IN4",
        "type": "input",
        "description": "Logic input controlling the H-bridge output; logic high requires at least 2.0V and logic low is 0.8V max, with an internal pulldown to GND."
      },
      {
        "number": "8",
        "name": "VDD2",
        "type": "power_in",
        "description": "Power supply for the second H-bridge, 2.4V to 7.2V."
      },
      {
        "number": "9",
        "name": "VDD2",
        "type": "power_in",
        "description": "Power supply for the second H-bridge, 2.4V to 7.2V."
      },
      {
        "number": "10",
        "name": "OUT4",
        "type": "output",
        "description": "H-bridge output to connect directly to the motor or other inductive load; channel 2 on-resistance is 550 mΩ typ at 1A load."
      },
      {
        "number": "11",
        "name": "OUT4",
        "type": "output",
        "description": "H-bridge output to connect directly to the motor or other inductive load; channel 2 on-resistance is 550 mΩ typ at 1A load."
      },
      {
        "number": "12",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "13",
        "name": "VDD1",
        "type": "power_in",
        "description": "Power supply for the first H-bridge, 2.4V to 7.2V."
      },
      {
        "number": "14",
        "name": "VDD1",
        "type": "power_in",
        "description": "Power supply for the first H-bridge, 2.4V to 7.2V."
      },
      {
        "number": "15",
        "name": "OUT2",
        "type": "output",
        "description": "H-bridge output to connect directly to the motor or other inductive load; channel 1 on-resistance is 550 mΩ typ at 1A load."
      },
      {
        "number": "16",
        "name": "OUT2",
        "type": "output",
        "description": "H-bridge output to connect directly to the motor or other inductive load; channel 1 on-resistance is 550 mΩ typ at 1A load."
      },
      {
        "number": "17",
        "name": "GND1",
        "type": "power_in",
        "description": "Logic ground; connect to board ground."
      },
      {
        "number": "18",
        "name": "GND1",
        "type": "power_in",
        "description": "Logic ground; connect to board ground."
      },
      {
        "number": "19",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "20",
        "name": "OUT1",
        "type": "output",
        "description": "H-bridge output to connect directly to the motor or other inductive load; channel 1 on-resistance is 550 mΩ typ at 1A load."
      },
      {
        "number": "21",
        "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 datasheet pin table names both pin 4 and pin 5 as OUT3. Pins 10 and 11 are OUT4 and pins 1/20 ar; Pins 1 and 20 are both printed as OUT1. This looks like intentional paralleling of the output pins, ; The exposed pad is labeled TP (thermal pad, connect to ground) rather than a numbered pin. Its type ",
          "exposed pad 21 added from the footprint",
          "dropped thermal pad ['TP'] absent from footprint"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0513,
        "at": "2026-10-18T02:27:49"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590455774162939904",
        "pages": 9,
        "sha256": "0455e94341abc96b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3,
          3,
          0.52
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "0ee4e1082236390795238cd34b082d96efd160d6292c636cc40201a5a30cdc63",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tmi8120-etched.step",
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        "sha256": "95b8b501ee1c0944d9f284995aa6a4a520fb90ab421c1dbaa3fedfdf3ffc6bfc",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TMI",
      "Package": "QFN-20-EP(3x3)",
      "Category": "Motor Driver ICs",
      "Pins": "21"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0455e94341abc96bd369d04d71b8ea353d12a7f914d00c6f9cc9e1eaf285270d",
      "rows": [
        {
          "name": "Power supply voltage (VDD1, VDD2)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7.2,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Logic input voltage (INx)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Upper limit printed as VDD",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output peak current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": 0,
          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operation temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -30,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "ESD Human Body Model for all pins",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -2000,
          "typ": null,
          "max": 2000,
          "conditions": "JEDEC JS-001, printed as ±2000",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power supply voltage range",
          "symbol": "VDD1, VDD2",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": 7.2,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Logic input voltage range",
          "symbol": "IN1, IN2, IN3, IN4",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "Upper limit printed as VDD",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VDDx operating voltage",
          "symbol": "VDD1, VDD2",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": 7.2,
          "conditions": "TA = 25°C, over recommended operating conditions",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VDDx operating supply current",
          "symbol": "IVDD1, IVDD2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.1,
          "max": 0.5,
          "conditions": "IN1=IN2='H' or IN1='H' & IN2='L' or IN1='L' & IN3='H', no load",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VDDx standby current",
          "symbol": "ISTD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": 10,
          "conditions": "IN1/IN2=IN3/IN4='L', no load",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input logic low voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input logic high voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input logic low current",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "μA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VIN = 0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input logic high current",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 3.75,
          "max": 20,
          "conditions": "VIN = 5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Pulldown resistance to GND",
          "symbol": "RPD",
          "kind": "electrical",
          "unit": "MΩ",
          "min": null,
          "typ": 1.3,
          "max": null,
          "conditions": "to GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "H-bridge on resistance",
          "symbol": "RDS(ON)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 550,
          "max": 700,
          "conditions": "ILOAD=1A, HS_PMOS+LS_NMOS",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tmi8120"
  ],
  "discovery_pitch": "TMI8120 (TMI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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  "visibility": {
    "public": true
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}