CM1048-QT

{
  "schema_version": 1,
  "type": "component",
  "slug": "cm1048-qt",
  "title": "CM1048-QT",
  "brief": "iCM(创芯微) Battery Management, TSSOP-16. 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 management (pmic)",
    "cm1048-qt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CM1048-QT",
    "manufacturer": "iCM(创芯微)",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603349403717410816",
    "parts": {
      "symbol": "cm1048-qt.kicad_sym",
      "footprint": "cm1048-qt.kicad_mod",
      "model_3d": "cm1048-qt-hero.glb",
      "model_3d_plain": "cm1048-qt-etched.glb",
      "model_3d_step": "cm1048-qt-etched.step",
      "model_3d_step_plain": "cm1048-qt.step",
      "lbr": "cm1048-qt.lbr"
    },
    "distributor_links": {
      "lcsc": "C22446449"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T09:20:51Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply input and positive voltage connection of cell 4; the absolute maximum rating is VSS-0.3 V to VSS+30 V."
      },
      {
        "number": "2",
        "name": "VC4",
        "type": "power_in",
        "description": "Positive voltage connection for cell 4; the absolute maximum rating is VSS-0.3 V to VSS+30 V."
      },
      {
        "number": "3",
        "name": "VC4",
        "type": "power_in",
        "description": "Positive voltage connection for cell 4 (second VC4 pin in the table); the absolute maximum rating is VSS-0.3 V to VSS+30 V."
      },
      {
        "number": "4",
        "name": "VC3",
        "type": "power_in",
        "description": "Negative voltage of cell 4 and positive voltage connection of cell 3; the absolute maximum rating is VSS-0.3 V to VSS+30 V."
      },
      {
        "number": "5",
        "name": "VC2",
        "type": "power_in",
        "description": "Negative voltage of cell 3 and positive voltage connection of cell 2; the absolute maximum rating is VSS-0.3 V to VSS+30 V."
      },
      {
        "number": "6",
        "name": "VC1",
        "type": "power_in",
        "description": "Negative voltage of cell 2 and positive voltage connection of cell 1; the absolute maximum rating is VSS-0.3 V to VSS+30 V."
      },
      {
        "number": "7",
        "name": "VSS",
        "type": "power_in",
        "description": "Chip ground and negative voltage connection of cell 1."
      },
      {
        "number": "8",
        "name": "SEL",
        "type": "input",
        "description": "Series-count selection terminal for 3-cell or 4-cell operation; the absolute maximum rating is VSS-0.3 V to VSS+5.0 V."
      },
      {
        "number": "9",
        "name": "TEC",
        "type": "input",
        "description": "Discharge over-current delay adjustment terminal, where the delay is set by an external capacitor CTEC (TEC1 = 10 × CTEC in ms, with CTEC in nF); the absolute maximum rating is VSS-0.3 V to VSS+5.0 V."
      },
      {
        "number": "10",
        "name": "CLR",
        "type": "input",
        "description": "Resistor connection to the NTC for setting the charge low-temperature protection point; the absolute maximum rating is VSS-0.3 V to VSS+5.0 V."
      },
      {
        "number": "11",
        "name": "DHR",
        "type": "input",
        "description": "Resistor connection to the NTC for setting the discharge high-temperature protection point; the absolute maximum rating is VSS-0.3 V to VSS+5.0 V."
      },
      {
        "number": "12",
        "name": "CHR",
        "type": "input",
        "description": "Resistor connection to the NTC for setting the charge high-temperature protection point; the absolute maximum rating is VSS-0.3 V to VSS+5.0 V."
      },
      {
        "number": "13",
        "name": "VINI",
        "type": "input",
        "description": "Over-current detection input for charge and discharge current sensing; the absolute maximum rating is VSS-0.3 V to VSS+30 V."
      },
      {
        "number": "14",
        "name": "DO",
        "type": "output",
        "description": "Discharge MOSFET control output; the absolute maximum rating is VSS-0.3 V to VSS+30 V."
      },
      {
        "number": "15",
        "name": "CO",
        "type": "output",
        "description": "Charge MOSFET control output; the absolute maximum rating is VSS-30 V to VSS+30 V."
      },
      {
        "number": "16",
        "name": "VM",
        "type": "input",
        "description": "Charger and load detection terminal; the absolute maximum rating is VSS-30 V to VSS+30 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 pin table lists two pins both named VC4 (pins 2 and 3), and the pin diagram also shows VC4 twice; The pin diagram (Figure 3) text order does not match the pin-number table, so the diagram layout was; The datasheet gives the function of these pins but not their logic levels or operating voltage range"
        ],
        "pages_sent": 21,
        "cost_usd": 0.0923,
        "at": "2026-10-17T09:18:16"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603349403717410816",
        "pages": 21,
        "sha256": "7d286fab1c0c4dd9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "cm1048-qt.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cm1048-qt-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "516753ff280e283a28eae3178ab2d926e3d716e98daf7f3339cba1275045b6ed",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "iCM(创芯微)",
      "Package": "TSSOP-16",
      "Category": "Power Management (PMIC)",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "7d286fab1c0c4dd95fd858576bd923de4be476d9265acd8561e25f0935a73792",
      "rows": [
        {
          "name": "正常工作电流 (Normal operating current)",
          "symbol": "IVCC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 10,
          "max": 15,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "过充电保护延时 (Overcharge detection delay)",
          "symbol": "TOC",
          "kind": "timing",
          "unit": "s",
          "min": 0.7,
          "typ": 1,
          "max": 1.3,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 4.4V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "过充电解除延时 (Overcharge release delay)",
          "symbol": "TOCR",
          "kind": "timing",
          "unit": "ms",
          "min": 180,
          "typ": 256,
          "max": 332,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 4.4 → 3.5V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "过放电解除电压 (Overdischarge release voltage, CM1048-QT VODR=3.000 V)",
          "symbol": "VODR",
          "kind": "tolerance",
          "unit": "V",
          "min": -0.08,
          "typ": 3,
          "max": 0.08,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 2.0 → 3.5V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "过放电保护延时 (Overdischarge detection delay)",
          "symbol": "TOD",
          "kind": "timing",
          "unit": "s",
          "min": 0.7,
          "typ": 1,
          "max": 1.3,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 2.0V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "过放电解除延时 (Overdischarge release delay)",
          "symbol": "TODR",
          "kind": "timing",
          "unit": "ms",
          "min": 179,
          "typ": 256,
          "max": 333,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 2.0 → 3.5V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "低压禁充电压 (Low-voltage charge inhibit voltage)",
          "symbol": "VLV",
          "kind": "electrical",
          "unit": "V",
          "min": 1.125,
          "typ": 1.5,
          "max": 1.875,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 1.2V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "低压禁充解除电压 (Low-voltage charge inhibit release voltage)",
          "symbol": "VLVR",
          "kind": "electrical",
          "unit": "V",
          "min": 1.1,
          "typ": 1.52,
          "max": 1.94,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 1.2 → 3.5V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "低压禁充延时 (Low-voltage charge inhibit delay)",
          "symbol": "TLV",
          "kind": "timing",
          "unit": "s",
          "min": 1,
          "typ": 1.5,
          "max": 2,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 1.2V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "放电过流1保护电压 (Discharge overcurrent 1 voltage, CM1048-QT VEC1=0.050 V)",
          "symbol": "VEC1",
          "kind": "tolerance",
          "unit": "V",
          "min": -0.005,
          "typ": 0.05,
          "max": 0.005,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.18V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "放电过流1保护延时 (Discharge overcurrent 1 delay)",
          "symbol": "TEC1",
          "kind": "timing",
          "unit": "s",
          "min": 0.7,
          "typ": 1,
          "max": 1.3,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.18V, CTEC=0.1μF (±1%)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "放电过流2保护电压 (Discharge overcurrent 2 voltage, CM1048-QT VEC2=0.100 V)",
          "symbol": "VEC2",
          "kind": "tolerance",
          "unit": "V",
          "min": -0.01,
          "typ": 0.1,
          "max": 0.01,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.35V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "放电过流2保护延时 (Discharge overcurrent 2 delay)",
          "symbol": "TEC2",
          "kind": "timing",
          "unit": "ms",
          "min": 70,
          "typ": 100,
          "max": 130,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.35V, CTEC=0.1μF (±1%)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "短路保护延时 (Short-circuit protection delay)",
          "symbol": "TSHORT",
          "kind": "timing",
          "unit": "μs",
          "min": 150,
          "typ": 250,
          "max": 350,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.8V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "放电过流解除延时 (Discharge overcurrent release delay)",
          "symbol": "TECR",
          "kind": "timing",
          "unit": "ms",
          "min": 22,
          "typ": 32,
          "max": 42,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0.8 → 0V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "充电过流保护延时 (Charge overcurrent protection delay)",
          "symbol": "TCHA",
          "kind": "timing",
          "unit": "ms",
          "min": 180,
          "typ": 256,
          "max": 332,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → -1.0V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "充电过流解除延时 (Charge overcurrent release delay)",
          "symbol": "TCHAR",
          "kind": "timing",
          "unit": "ms",
          "min": 45,
          "typ": 64,
          "max": 83,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = -1V → 0V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "充电高温保护温度 (Charge high-temperature protection temperature)",
          "symbol": "TCH",
          "kind": "tolerance",
          "unit": "°C",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "充电高温解除温度 (Charge high-temperature release temperature)",
          "symbol": "TCHR",
          "kind": "tolerance",
          "unit": "°C",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 1k → 10k",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "放电高温保护温度 (Discharge high-temperature protection temperature)",
          "symbol": "TDH",
          "kind": "tolerance",
          "unit": "°C",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "放电高温解除温度 (Discharge high-temperature release temperature)",
          "symbol": "TDHR",
          "kind": "tolerance",
          "unit": "°C",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 1k → 10k",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "充电高温保护延时 (Charge high-temperature protection delay)",
          "symbol": "DTCH",
          "kind": "timing",
          "unit": "s",
          "min": 1.05,
          "typ": 1.5,
          "max": 1.95,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "充电高温解除延时 (Charge high-temperature release delay)",
          "symbol": "DTCHR",
          "kind": "timing",
          "unit": "s",
          "min": 1.05,
          "typ": 1.5,
          "max": 1.95,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 1k → 10k",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "放电高温保护延时 (Discharge high-temperature protection delay)",
          "symbol": "DTDH",
          "kind": "timing",
          "unit": "s",
          "min": 1.05,
          "typ": 1.5,
          "max": 1.95,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "放电高温解除延时 (Discharge high-temperature release delay)",
          "symbol": "DTDHR",
          "kind": "timing",
          "unit": "s",
          "min": 1.05,
          "typ": 1.5,
          "max": 1.95,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 1k → 10k",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "充电低温保护温度 (Charge low-temperature protection temperature)",
          "symbol": "TCL",
          "kind": "tolerance",
          "unit": "°C",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 3M",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "充电低温解除温度 (Charge low-temperature release temperature)",
          "symbol": "TCLR",
          "kind": "tolerance",
          "unit": "°C",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 3M → 10k",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "放电低温保护温度 (Discharge low-temperature protection temperature)",
          "symbol": "TDL",
          "kind": "tolerance",
          "unit": "°C",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 3M",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "放电低温解除温度 (Discharge low-temperature release temperature)",
          "symbol": "TDLR",
          "kind": "tolerance",
          "unit": "°C",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 3M → 10k",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "充电低温保护延时 (Charge low-temperature protection delay)",
          "symbol": "DTCL",
          "kind": "timing",
          "unit": "s",
          "min": 1.05,
          "typ": 1.5,
          "max": 1.95,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 3M",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "充电低温解除延时 (Charge low-temperature release delay)",
          "symbol": "DTCLR",
          "kind": "timing",
          "unit": "s",
          "min": 1.05,
          "typ": 1.5,
          "max": 1.95,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 3M → 10k",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "放电低温保护延时 (Discharge low-temperature protection delay)",
          "symbol": "DTDL",
          "kind": "timing",
          "unit": "s",
          "min": 1.05,
          "typ": 1.5,
          "max": 1.95,
          "conditions": "Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 3M",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "放电低温解除延时 (Discharge low-temperature release delay)",
          "symbol": "DTDLR",
          "kind": "timing",
          "unit": "s",
          "min": 1.05,
          "typ": 1.5,
          "max": 1.95,
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          "kind": "absolute_maximum",
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          "typ": null,
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          "conditions": "Ta=-40°C~+85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 2.0 → 3.5V",
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          "conditions": "Ta=-40°C~+85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 1.2V",
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          "min": 0.99,
          "typ": 1.52,
          "max": 2.05,
          "conditions": "Ta=-40°C~+85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 1.2 → 3.5V",
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          "max": 0.02,
          "conditions": "Ta=-40°C~+85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.35V",
          "source_page": 10,
          "source": "datasheet"
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          "name": "充电高温保护温度 (Charge high-temperature protection temperature, Ta -40~+85°C)",
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          "kind": "tolerance",
          "unit": "°C",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Ta=-40°C~+85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k",
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          "source": "datasheet"
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