CM1255-CCH-M8A

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  "title": "CM1255-CCH-M8A",
  "brief": "iCM(创芯微) , MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "mpn": "CM1255-CCH-M8A",
    "manufacturer": "iCM(创芯微)",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "IC",
    "subcategory": "IC",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603349414090194944",
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    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "Chip supply terminal; the operating voltage VCC to VSS is 2.0 V to 25 V, and the absolute maximum rating is VSS-0.3 V to VSS+35 V."
      },
      {
        "number": "2",
        "name": "VC1",
        "type": "input",
        "description": "Positive voltage terminal of battery cell 1; each cell voltage has an absolute maximum rating of 0 to 35 V."
      },
      {
        "number": "3",
        "name": "VC2",
        "type": "input",
        "description": "Positive voltage terminal of battery cell 2 and negative voltage connection of battery cell 1; each cell voltage has an absolute maximum rating of 0 to 35 V."
      },
      {
        "number": "4",
        "name": "VC3",
        "type": "input",
        "description": "Positive voltage terminal of battery cell 3 and negative voltage connection of battery cell 2; each cell voltage has an absolute maximum rating of 0 to 35 V."
      },
      {
        "number": "5",
        "name": "VC4",
        "type": "input",
        "description": "Positive voltage terminal of battery cell 4 and negative voltage connection of battery cell 3; each cell voltage has an absolute maximum rating of 0 to 35 V."
      },
      {
        "number": "6",
        "name": "VC5",
        "type": "input",
        "description": "Positive voltage terminal of battery cell 5 and negative voltage connection of battery cell 4; each cell voltage has an absolute maximum rating of 0 to 35 V."
      },
      {
        "number": "7",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative voltage connection of battery cell 5 and chip ground terminal."
      },
      {
        "number": "8",
        "name": "CO",
        "type": "output",
        "description": "Charge control connection that drives the external charge-control MOSFET; CO voltage is limited to VSS-0.3 V to VCC+0.3 V, and for CM1255-CCH-M8A the CO high level is VCC with dynamic-H output logic."
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  "metadata": {
    "specs": {
      "Manufacturer": "iCM(创芯微)",
      "Package": "MSOP-8",
      "Category": "",
      "Pins": "8"
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    "characteristics": {
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          "unit": "μA",
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          "name": "Overcharge recovery delay TOCR, Ta=+25°C",
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          "name": "Reset delay TTR, Ta=+25°C",
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          "conditions": "VCC 对 VSS 绝对电压",
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          "name": "Normal power consumption, Ta=-40°C to +85°C",
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          "kind": "electrical",
          "unit": "μA",
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          "typ": 1.5,
          "max": 3.5,
          "conditions": "VC1=VC2=VC3=VC4=VC5=3.5V",
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        {
          "name": "Overcharge protection voltage, row labelled @Ta=25°C (printed VOC-0.045 / VOC+0.035)",
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          "min": -0.045,
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          "name": "Overcharge recovery delay TOCR, Ta=-40°C to +85°C",
          "symbol": "TOCR",
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          "typ": 16,
          "max": 120,
          "conditions": "VC1=VC2=VC3=VC4=3.5V, VC5=4.6 → 3.5V",
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        {
          "name": "Reset delay TTR, Ta=-40°C to +85°C",
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          "unit": "ms",
          "min": 1,
          "typ": 6,
          "max": 12,
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          "name": "CO terminal H output voltage, CO high level = VCC option, Ta=-40°C to +85°C (printed VCC-0.7 / VCC+0.7)",
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          "max": 0.7,
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          "name": "CO absorption current, Ta=-40°C to +85°C",
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          "name": "CO output current, Ta=-40°C to +85°C",
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          "unit": "μA",
          "min": 50,
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          "name": "VCC absolute maximum (printed VSS-0.3 ~ VSS+35; min/max are offsets from VSS)",
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          "min": -0.3,
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          "max": 35,
          "conditions": "applies to terminal VCC, referenced to VSS",
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          "name": "Cell voltage absolute maximum",
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          "kind": "absolute_maximum",
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          "max": 35,
          "conditions": "VC1-VC2, VC2-VC3, VC3-VC4, VC4-VC5, VC5-VSS",
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          "name": "CO output terminal voltage absolute maximum (printed VSS-0.3 ~ VCC+0.3; min referenced to VSS, max referenced to VCC)",
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          "kind": "absolute_maximum",
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          "min": -0.3,
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          "conditions": "applies to terminal CO; min referenced to VSS, max referenced to VCC",
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          "name": "Operating ambient temperature",
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          "unit": "°C",
          "min": -40,
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          "max": 85,
          "conditions": "",
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        {
          "name": "Storage temperature range",
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          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 125,
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          "source_page": 5,
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        {
          "name": "Overcharge protection delay TOC (2 s for CCH; printed Toc*0.7 / Toc*1.3, not computed), Ta=+25°C",
          "symbol": "TOC",
          "kind": "electrical",
          "unit": "s",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "VC1=VC2=VC3=VC4=3.5V, VC5=3.5 → 4.6V",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Overcharge protection delay TOC (2 s for CCH; printed Toc*0.5 / Toc*1.5, not computed), Ta=-40°C to +85°C",
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          "kind": "electrical",
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