TMI4101A

{
  "schema_version": 1,
  "type": "component",
  "slug": "tmi4101a",
  "title": "TMI4101A",
  "brief": "TMI Battery Management ICs, SSOP-28. 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",
    "power supply chip",
    "tmi4101a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TMI4101A",
    "manufacturer": "TMI",
    "package": "SSOP-28",
    "pin_count": 28,
    "category": "Power Supply Chip",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ff20d67aaa080791715bf039079082d4.pdf",
    "parts": {
      "symbol": "tmi4101a.kicad_sym",
      "footprint": "tmi4101a.kicad_mod",
      "model_3d": "tmi4101a-hero.glb",
      "model_3d_plain": "tmi4101a-etched.glb",
      "model_3d_step": "tmi4101a-etched.step",
      "model_3d_step_plain": "tmi4101a.step",
      "lbr": "tmi4101a.lbr"
    },
    "distributor_links": {
      "lcsc": "C5259226"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T17:43:02Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CHSE",
        "type": "input",
        "description": "Charger detection pin with an internal pull-up (RCHSE 1800-3000 kΩ), where a charger is detected when the CHSE level is at or below VCHSE (0.6-1.5 V), and the absolute range is VDD-80 V to VDD+0.3 V."
      },
      {
        "number": "2",
        "name": "CHG",
        "type": "output",
        "description": "Charge MOSFET control output with a source current of 8-12 μA (ICHG, typ. 10 μA) that goes high-impedance during overcharge, over-discharge load-lock, and other protection states, with an absolute range of VDD-80 V to VDD+0.3 V."
      },
      {
        "number": "3",
        "name": "VM",
        "type": "input",
        "description": "Load detection pin with an internal pull-down (RVM 15-35 kΩ), where a load is detected when the VM level reaches VVM (1.05-1.35 V), and the absolute range is VDD-80 V to VDD+0.3 V."
      },
      {
        "number": "4",
        "name": "DSG",
        "type": "output",
        "description": "Discharge MOSFET control output whose high level is 11.5-13.5 V when VDD > 13 V or VDD-1 to VDD-0.7 V when VDD < 13 V, and whose low level is at most 0.2 V."
      },
      {
        "number": "5",
        "name": "CTL",
        "type": "bidirectional",
        "description": "DSG output control pin with priority over the internal protection circuit, where GND forces DSG low and CHG high-impedance, and floating gives normal operation; its absolute range is GND-0.3 V to 5.5 V."
      },
      {
        "number": "6",
        "name": "DS",
        "type": "bidirectional",
        "description": "Test pin that shortens the delay times, with a test-high level of 3.5-4.5 V and a test-low level of 0-0.3 V, and an absolute range of GND-0.3 V to 5.5 V."
      },
      {
        "number": "7",
        "name": "DSD",
        "type": "bidirectional",
        "description": "Connection pin for the external capacitor that sets the over-discharge protection delay, giving tUV of 1.0-2.0 s with a 0.1 μF ±10% capacitor, and an absolute range of GND-0.3 V to 5.5 V."
      },
      {
        "number": "8",
        "name": "CDC",
        "type": "bidirectional",
        "description": "Connection pin for the external capacitor that sets the discharge over-current 1 and 2 delays, giving tDOC1 of 0.5-1.5 s with a 0.1 μF ±10% capacitor, and an absolute range of GND-0.3 V to 5.5 V."
      },
      {
        "number": "9",
        "name": "TS1",
        "type": "input",
        "description": "Temperature resistor connection pin, for which the datasheet recommends an NTC 103AT (β = 3435), and an absolute range of GND-0.3 V to 5.5 V."
      },
      {
        "number": "10",
        "name": "TS0",
        "type": "input",
        "description": "Temperature resistor connection pin, for which the datasheet recommends an NTC 103AT (β = 3435), and an absolute range of GND-0.3 V to 5.5 V."
      },
      {
        "number": "11",
        "name": "RSENP",
        "type": "input",
        "description": "Positive input of the current-sense pair used for discharge, charge, and short-circuit detection, with an absolute range of GND-0.3 V to 5.5 V."
      },
      {
        "number": "12",
        "name": "RSENN",
        "type": "input",
        "description": "Negative input of the current-sense pair used for discharge, charge, and short-circuit detection, with an absolute range of GND-0.3 V to 5.5 V."
      },
      {
        "number": "13",
        "name": "SEL0",
        "type": "input",
        "description": "7/8/9/10-cell application select pin, where VSELH is VDD-0.6 to VDD-0.1 V and VSELL is at most 0.6 V, and the absolute range is GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "14",
        "name": "SEL1",
        "type": "input",
        "description": "7/8/9/10-cell application select pin, where VSELH is VDD-0.6 to VDD-0.1 V and VSELL is at most 0.6 V, and the absolute range is GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "15",
        "name": "VS",
        "type": "power_in",
        "description": "Mode selection pin whose function the datasheet gives only as 模式选择 (mode selection), with an absolute range of GND-0.3 V to 5.5 V."
      },
      {
        "number": "16",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground connection pin, the reference for the device."
      },
      {
        "number": "17",
        "name": "VC1",
        "type": "input",
        "description": "Positive terminal connection for cell 1, with an absolute range of GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "18",
        "name": "VC2",
        "type": "input",
        "description": "Positive terminal connection for cell 2, with an absolute range of GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "19",
        "name": "VC3",
        "type": "input",
        "description": "Positive terminal connection for cell 3, with an absolute range of GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "20",
        "name": "VC4",
        "type": "input",
        "description": "Positive terminal connection for cell 4, with an absolute range of GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "21",
        "name": "VC5",
        "type": "input",
        "description": "Positive terminal connection for cell 5, with an absolute range of GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "22",
        "name": "VC6",
        "type": "input",
        "description": "Positive terminal connection for cell 6, with an absolute range of GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "23",
        "name": "VC6",
        "type": "input",
        "description": "Positive terminal connection for cell 6 as printed in the datasheet (duplicate label of pin 22), with an absolute range of GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "24",
        "name": "VC7",
        "type": "input",
        "description": "Positive terminal connection for cell 7, with an absolute range of GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "25",
        "name": "VC8",
        "type": "input",
        "description": "Positive terminal connection for cell 8, with an absolute range of GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "26",
        "name": "VC9",
        "type": "input",
        "description": "Positive terminal connection for cell 9, with an absolute range of GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "27",
        "name": "VC10",
        "type": "input",
        "description": "Positive terminal connection for the highest cell (cell 10), with an absolute range of GND-0.3 V to VDD+0.3 V."
      },
      {
        "number": "28",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive power supply connection pin, with an operating range of 3 V to 80 V and an absolute maximum of 80 V above GND (VDD-GND -0.3 V to 80 V)."
      }
    ],
    "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 MPN 'TMI4101A' does not appear exactly in the ordering table. The table lists TMI4101AN, TMI4101; Both pin 22 and pin 23 are printed as VC6 in the pin definition table. Pin 23 is kept as printed; ve; The I/O type for SEL1 is blank in the pin definition table. It is typed as input because it is a lev"
        ],
        "pages_sent": 21,
        "cost_usd": 0.093,
        "at": "2026-10-30T17:42:41"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/ff20d67aaa080791715bf039079082d4.pdf",
        "pages": 21,
        "sha256": "1d6cecb0255c70af",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.2,
          9.9,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "06f377bfd22cd09c467f4e1cf02cd538f01a9e1d95758269272a019675fee24f",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tmi4101a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c68aec07abead21bc9ec8301b15ffe905bdbf6674d23394d19ee4e15ce4c3317",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "SSOP28",
      "source_page": 20,
      "D": {
        "nom_mm": 9.9,
        "range_mm": [
          9.8,
          10
        ]
      },
      "E1": {
        "nom_mm": 3.9,
        "range_mm": [
          3.8,
          4
        ]
      },
      "E": {
        "nom_mm": 6,
        "range_mm": [
          5.8,
          6.2
        ]
      },
      "e": {
        "nom_mm": 0.635,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.75,
        "range_mm": [
          null,
          1.75
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "tmi4101a.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TMI",
      "Package": "SSOP-28",
      "Category": "Power Supply Chip",
      "Pins": "28"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tmi4101a"
  ],
  "discovery_pitch": "TMI4101A (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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}