CM1255-ADH-M8A

{
  "schema_version": 1,
  "type": "component",
  "slug": "cm1255-adh-m8a",
  "title": "CM1255-ADH-M8A",
  "brief": "iCM(创芯微) Battery Management, MSOP-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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    "power management (pmic)",
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  "component": {
    "mpn": "CM1255-ADH-M8A",
    "manufacturer": "iCM(创芯微)",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603349411754237952",
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    "distributor_links": {
      "lcsc": "C22446476"
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
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        "status": "deferred",
        "error": "shared DigiKey quota guard: 144 calls left today"
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    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "Chip supply terminal, with operating voltage 2.0 V to 25 V relative to VSS and absolute maximum rating VSS-0.3 V to VSS+35 V."
      },
      {
        "number": "2",
        "name": "VC1",
        "type": "passive",
        "description": "Positive voltage connection of cell 1 for cell-voltage sensing; absolute maximum cell voltage range is 0 V to 35 V."
      },
      {
        "number": "3",
        "name": "VC2",
        "type": "passive",
        "description": "Positive voltage connection of cell 2 and negative voltage connection of cell 1 for cell-voltage sensing; absolute maximum cell voltage range is 0 V to 35 V."
      },
      {
        "number": "4",
        "name": "VC3",
        "type": "passive",
        "description": "Positive voltage connection of cell 3 and negative voltage connection of cell 2 for cell-voltage sensing; absolute maximum cell voltage range is 0 V to 35 V."
      },
      {
        "number": "5",
        "name": "VC4",
        "type": "passive",
        "description": "Positive voltage connection of cell 4 and negative voltage connection of cell 3 for cell-voltage sensing; absolute maximum cell voltage range is 0 V to 35 V."
      },
      {
        "number": "6",
        "name": "VC5",
        "type": "passive",
        "description": "Positive voltage connection of cell 5 and negative voltage connection of cell 4 for cell-voltage sensing; absolute maximum cell voltage range is 0 V to 35 V."
      },
      {
        "number": "7",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative voltage connection of cell 5 and chip ground terminal; the reference for VCC and CO."
      },
      {
        "number": "8",
        "name": "CO",
        "type": "output",
        "description": "Charge-control connection that drives the external charge MOSFET; for the ADH variant it is a CMOS dynamic-H output with high level equal to VCC, absolute maximum VSS-0.3 V to VCC+0.3 V, minimum sink current 0.4 mA and minimum output (source) current 50 µA."
      }
    ],
    "provenance": {
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet gives no electrical pin type. VC2 to VC5 are cell-junction sense connections, so I cla; VSS is typed power_in because it is the chip ground, per the GND convention. It also serves as the n; The datasheet calls CO a CMOS output with dynamic-H behaviour for this product. Its ERC class is out"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0684,
        "at": "2026-11-10T20:02:53"
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        "sha256": "206773ab842cb3a0",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
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      "package_code": "MSOP8",
      "source_page": 13,
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  "metadata": {
    "specs": {
      "Manufacturer": "iCM(创芯微)",
      "Package": "MSOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
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    "characteristics": {
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          "name": "Operating voltage (VCC to VSS)",
          "symbol": "VOP",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 25,
          "conditions": "VCC to VSS absolute voltage; Ta=+25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Normal power consumption",
          "symbol": "IDD_OP",
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          "unit": "μA",
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        {
          "name": "Overcharge protection voltage accuracy",
          "symbol": "VOC",
          "kind": "tolerance",
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          "min": -0.02,
          "typ": null,
          "max": 0.02,
          "conditions": "Ta=+25°C; VC1=VC2=VC3=VC4=3.5V, VC5=3.5→4.4V. Printed as VOC-0.020 / VOC / VOC+0.020; min/max are offsets from VOC=4.350 V (this MPN, product list)",
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        },
        {
          "name": "Overcharge protection voltage accuracy (wide-temp)",
          "symbol": "VOC",
          "kind": "tolerance",
          "unit": "V",
          "min": -0.025,
          "typ": null,
          "max": 0.025,
          "conditions": "Ta=-20°C~+60°C; VC1=VC2=VC3=VC4=3.5V, VC5=3.5→4.4V. Offsets from VOC=4.350 V (this MPN)",
          "source_page": 6,
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        {
          "name": "Hysteresis voltage accuracy (VHC≥0.100V)",
          "symbol": "VHC",
          "kind": "tolerance",
          "unit": "V",
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          "typ": null,
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          "conditions": "Ta=+25°C; VHC≥0.100V branch (applies: this MPN VHC=0.100 V); VC1=VC2=VC3=VC4=3.5V, VC5=4.4→3.5V. Offsets from VHC=0.100 V",
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        {
          "name": "Overcharge protection delay",
          "symbol": "TOC",
          "kind": "timing",
          "unit": "s",
          "min": null,
          "typ": 6,
          "max": null,
          "conditions": "Ta=+25°C; VC1=VC2=VC3=VC4=3.5V, VC5=3.5→4.6V. Printed min Toc*0.7, max Toc*1.3; Toc=6 s for this MPN",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Recovery delay",
          "symbol": "TOCR",
          "kind": "timing",
          "unit": "ms",
          "min": 6,
          "typ": 16,
          "max": 80,
          "conditions": "Ta=+25°C; VC1=VC2=VC3=VC4=3.5V, VC5=4.6→3.5V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Reset delay",
          "symbol": "TTR",
          "kind": "timing",
          "unit": "ms",
          "min": 3,
          "typ": 6,
          "max": 9,
          "conditions": "Ta=+25°C (table header)",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "CO high-level output voltage (VCC option)",
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          "kind": "electrical",
          "unit": "V",
          "min": -0.7,
          "typ": null,
          "max": 0.7,
          "conditions": "Ta=+25°C; CO high level = VCC for this MPN. Printed VCC-0.7 / VCC / VCC+0.7; min/max are offsets from VCC",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "CO sink current",
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          "kind": "electrical",
          "unit": "mA",
          "min": 0.4,
          "typ": null,
          "max": null,
          "conditions": "Ta=+25°C; CO sink (absorb) current",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "CO output current",
          "symbol": "ICOH",
          "kind": "electrical",
          "unit": "μA",
          "min": 50,
          "typ": null,
          "max": null,
          "conditions": "Ta=+25°C; CO output current",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Operating voltage (VCC to VSS)",
          "symbol": "VOP",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 25,
          "conditions": "VCC to VSS absolute voltage; Ta=-40°C~+85°C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Normal power consumption",
          "symbol": "IDD_OP",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1.5,
          "max": 3.5,
          "conditions": "VC1=VC2=VC3=VC4=VC5=3.5V; Ta=-40°C~+85°C",
          "source_page": 7,
          "source": "datasheet"
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        {
          "name": "Overcharge protection voltage accuracy",
          "symbol": "VOC",
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          "min": -0.045,
          "typ": null,
          "max": 0.035,
          "conditions": "Ta=-40°C~+85°C, row for @Ta=+25°C; VC1=VC2=VC3=VC4=3.5V, VC5=3.5→4.4V. Printed VOC-0.045 / VOC+0.035; offsets from VOC=4.350 V (this MPN)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Hysteresis voltage accuracy (VHC≥0.100V)",
          "symbol": "VHC",
          "kind": "tolerance",
          "unit": "V",
          "min": -0.08,
          "typ": null,
          "max": 0.08,
          "conditions": "Ta=-40°C~+85°C; VHC≥0.100V branch (applies to this MPN); VC1=VC2=VC3=VC4=3.5V, VC5=4.4→3.5V. Offsets from VHC=0.100 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Overcharge protection delay",
          "symbol": "TOC",
          "kind": "timing",
          "unit": "s",
          "min": null,
          "typ": 6,
          "max": null,
          "conditions": "Ta=-40°C~+85°C; VC1=VC2=VC3=VC4=3.5V, VC5=3.5→4.6V. Printed min Toc*0.5, max Toc*1.5; Toc=6 s for this MPN",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Recovery delay",
          "symbol": "TOCR",
          "kind": "timing",
          "unit": "ms",
          "min": 3,
          "typ": 16,
          "max": 120,
          "conditions": "Ta=-40°C~+85°C; VC1=VC2=VC3=VC4=3.5V, VC5=4.6→3.5V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Reset delay",
          "symbol": "TTR",
          "kind": "timing",
          "unit": "ms",
          "min": 1,
          "typ": 6,
          "max": 12,
          "conditions": "Ta=-40°C~+85°C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "CO high-level output voltage (VCC option)",
          "symbol": "VCOH",
          "kind": "electrical",
          "unit": "V",
          "min": -0.7,
          "typ": null,
          "max": 0.7,
          "conditions": "Ta=-40°C~+85°C; CO high level = VCC for this MPN. Printed VCC-0.7 / VCC / VCC+0.7; min/max are offsets from VCC",
          "source_page": 7,
          "source": "datasheet"
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          "name": "CO sink current",
          "symbol": "ICOL",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.4,
          "typ": null,
          "max": null,
          "conditions": "Ta=-40°C~+85°C; CO sink (absorb) current",
          "source_page": 7,
          "source": "datasheet"
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          "name": "CO output current",
          "symbol": "ICOH",
          "kind": "electrical",
          "unit": "μA",
          "min": 50,
          "typ": null,
          "max": null,
          "conditions": "Ta=-40°C~+85°C; CO output current",
          "source_page": 7,
          "source": "datasheet"
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          "name": "Power supply voltage VCC",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 35,
          "conditions": "Relative to VSS: printed VSS-0.3 ~ VSS+35; min/max are offsets from VSS",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Cell voltage (VC1-VC2 ... VC5-VSS)",
          "symbol": "VCELL",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 35,
          "conditions": "Each cell: VC1-VC2, VC2-VC3, VC3-VC4, VC4-VC5, VC5-VSS",
          "source_page": 5,
          "source": "datasheet"
        },
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          "name": "CO output terminal voltage",
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          "min": -0.3,
          "typ": null,
          "max": 0.3,
          "conditions": "CO pin; printed VSS-0.3 ~ VCC+0.3; min offset from VSS, max offset from VCC",
          "source_page": 5,
          "source": "datasheet"
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          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
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          "name": "Storage temperature",
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          "min": -55,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
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