TC642BEOA

{
  "schema_version": 1,
  "type": "component",
  "slug": "tc642beoa",
  "title": "TC642BEOA",
  "brief": "Microchip Tech Brushless DC (BLDC) Motor Driver, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "motor driver ics",
    "tc642beoa",
    "factory-2.0.0",
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  "component": {
    "mpn": "TC642BEOA",
    "manufacturer": "Microchip Tech",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Motor Driver ICs",
    "subcategory": "Brushless DC (BLDC) Motor Driver",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8558359981776408576",
    "parts": {
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      "lbr": "tc642beoa.lbr"
    },
    "distributor_links": {
      "lcsc": "C145620",
      "digikey": "TC642BEOA-ND",
      "mouser": "579-TC642BEOA"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T05:16:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "TC642BEOA-ND",
        "status": "found",
        "lifecycle": "Last Time Buy"
      },
      "mouser": {
        "pn": "579-TC642BEOA",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Analog input where the thermistor or other voltage-output temperature sensor connects; 1.20V to 2.60V (typical) drives 0% to 100% VOUT duty cycle."
      },
      {
        "number": "2",
        "name": "CF",
        "type": "output",
        "description": "Positive terminal of the PWM ramp generator timing capacitor; 1.0 µF is recommended for 30 Hz PWM operation."
      },
      {
        "number": "3",
        "name": "VMIN",
        "type": "input",
        "description": "Analog input from an external resistor divider that sets minimum fan speed (1.20V to 2.60V typical = 0% to 100% minimum duty cycle), and pulling 0 ≤ VMIN ≤ VSHDN forces shutdown."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SENSE",
        "type": "input",
        "description": "Analog input that detects fan current pulses across the sense resistor, with the absence of pulses indicating a fan fault condition (threshold 50 to 90 mV with respect to GND)."
      },
      {
        "number": "6",
        "name": "FAULT",
        "type": "output",
        "description": "Digital open-drain output that goes low on a fan fault (held until 16 pulses are detected at SENSE in a 32/f period) and, on the TC642B, when VIN reaches the 2.62V (typical) over-temperature threshold."
      },
      {
        "number": "7",
        "name": "VOUT",
        "type": "output",
        "description": "Active-high complementary PWM output that drives an external NPN base resistor or N-channel MOSFET gate, and is held continuously on during a fan fault."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply input referenced to GND, specified at 3.0V to 5.5V, which may be independent of the fan supply."
      }
    ],
    "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-number-to-name mapping is given for the MSOP, PDIP and SOIC packages together; the excerpt d; The excerpt contains only the PDIP package dimension drawing (page 27); no SOIC (150 mil) outline or; The ordering code / orderable suffix for the SOIC-8 variant of TC642B is not in the provided pages; "
        ],
        "pages_sent": 14,
        "cost_usd": 0.0707,
        "at": "2026-10-19T05:16:19"
      },
      "datasheet": {
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        "pages": 34,
        "sha256": "0f0a557397754060",
        "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"
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        "units": "mm",
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        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SOIC-8",
      "Category": "Motor Driver ICs",
      "Pins": "8"
    },
    "appearance": {
      "contacts": {
        "quote": "8-Lead Plastic Small Outline (SN) – Narrow, 150 mil (SOIC) Foot Angle f 048048",
        "page": 28,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "0f0a55739775406059e3a365a3433cc32a5ca439d4a033b23815dd2165782fb9"
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    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0f0a55739775406059e3a365a3433cc32a5ca439d4a033b23815dd2165782fb9",
      "rows": [
        {
          "name": "Supply Current, Operating",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 200,
          "max": 400,
          "conditions": "Pins 6, 7 Open, CF = 1 µF, VIN = VC(MAX)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
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          "symbol": "IOL",
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          "max": null,
          "conditions": "VOL = 10% of VDD",
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        {
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          "typ": null,
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          "source": "datasheet"
        },
        {
          "name": "Input Voltage at VIN or VMIN for 100% PWM Duty Cycle",
          "symbol": "VC(MAX)",
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          "typ": 2.6,
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        {
          "name": "VC(MAX) - VC(MIN)",
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          "min": 1.3,
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        },
        {
          "name": "VIN, VMIN Input Leakage",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Note 1",
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          "source": "datasheet"
        },
        {
          "name": "PWM Frequency",
          "symbol": "fPWM",
          "kind": "electrical",
          "unit": "Hz",
          "min": 26,
          "typ": 30,
          "max": 34,
          "conditions": "CF = 1.0 µF",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage",
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          "typ": null,
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          "conditions": "",
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        },
        {
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          "unit": "V",
          "min": null,
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          "max": 6,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "SENSE Input Threshold Voltage with Respect to GND",
          "symbol": "VTH(SENSE)",
          "kind": "electrical",
          "unit": "mV",
          "min": 50,
          "typ": 70,
          "max": 90,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "FAULT Output Low Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "IOL = 2.5 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Specified Temperature Range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
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          "conditions": "",
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          "source": "datasheet"
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        {
          "name": "Operating Temperature Range",
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          "min": -40,
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          "max": 125,
          "conditions": "",
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          "source": "datasheet"
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        {
          "name": "Storage Temperature Range",
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          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "TJ",
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          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD Protection on all pins",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": 3,
          "typ": null,
          "max": null,
          "conditions": "Printed as > 3 kV",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Package Resistance, 8-Pin SOIC",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 155,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_pitch": "TC642BEOA (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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}