MCP73123-22SI

{
  "schema_version": 1,
  "type": "component",
  "slug": "mcp73123-22si",
  "title": "MCP73123-22SI",
  "brief": "Microchip Tech Battery Management ICs, DFN-10-EP(3x3). 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 ics",
    "mcp73123-22si",
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    "extractor-text"
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  "component": {
    "mpn": "MCP73123-22SI",
    "manufacturer": "Microchip Tech",
    "package": "DFN-10-EP(3x3)",
    "pin_count": 11,
    "category": "Power Management ICs",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3f21f3afc81b4ed9aaf21a7a2fadf1a3.pdf",
    "parts": {
      "symbol": "mcp73123-22si.kicad_sym",
      "footprint": "mcp73123-22si.kicad_mod",
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      "model_3d_plain": "mcp73123-22si-etched.glb",
      "model_3d_step": "mcp73123-22si-etched.step",
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      "lbr": "mcp73123-22si.lbr"
    },
    "distributor_links": {
      "lcsc": "C88544"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T01:27:15Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Battery management input supply; for MCP73123 the recommended range is [VREG (typ) + 0.3V] to 6.0V, with at least 1 µF bypass to VSS and an absolute maximum of 18V."
      },
      {
        "number": "2",
        "name": "VDD",
        "type": "power_in",
        "description": "Battery management input supply; for MCP73123 the recommended range is [VREG (typ) + 0.3V] to 6.0V, with at least 1 µF bypass to VSS and an absolute maximum of 18V."
      },
      {
        "number": "3",
        "name": "VBAT",
        "type": "power_out",
        "description": "Battery charge control output, connected to the positive battery terminal, with at least 1 µF bypass to VSS; MCP73123 regulates it to 3.6V."
      },
      {
        "number": "4",
        "name": "VBAT",
        "type": "power_out",
        "description": "Battery charge control output, connected to the positive battery terminal, with at least 1 µF bypass to VSS; MCP73123 regulates it to 3.6V."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; leave unconnected."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; leave unconnected."
      },
      {
        "number": "7",
        "name": "STAT",
        "type": "output",
        "description": "Open-drain charge status output for driving an LED or a host MCU pull-up, with sink current of 20 mA to 35 mA and VOL of 0.5V max at 4 mA."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Battery management 0V reference, connected to the battery negative terminal and the input supply ground."
      },
      {
        "number": "9",
        "name": "VSS",
        "type": "power_in",
        "description": "Battery management 0V reference, connected to the battery negative terminal and the input supply ground."
      },
      {
        "number": "10",
        "name": "PROG",
        "type": "bidirectional",
        "description": "Sets the fast-charge current through a resistor to VSS (1 kΩ to 21 kΩ range), and an applied impedance of about 200 kΩ disables charging."
      },
      {
        "number": "11",
        "name": "EP",
        "type": "passive",
        "description": "Exposed thermal pad that should be connected to a copper area on the PCB, with vias added to improve heat dissipation."
      }
    ],
    "provenance": {
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        "primary_mode": "text",
        "consensus_model": null,
        "consensus": "skipped (clean text read)",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 34,
        "cost_usd": 0.0016,
        "at": "2026-10-27T01:26:49"
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        "pages": 34,
        "sha256": "1d12d2cfd2da7433",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 11,
        "described": 11,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "738e2eb45860c11759f8e4f44ab26932b7c15e4d5d6c8c9ac22ae866a3e38711",
        "checked": "2026-10-27",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "DFN-10-EP(3x3)",
      "Category": "Power Management ICs",
      "Pins": "11"
    },
    "characteristics": {
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      "source": "datasheet",
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      "rows": [
        {
          "name": "Input voltage range",
          "symbol": "VDD",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": null,
          "max": 16,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating voltage (MCP73123)",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.2,
          "typ": null,
          "max": 6.5,
          "conditions": "MCP73123",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current shutdown",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 4,
          "max": 5.5,
          "conditions": "关断 (VDD VBAT - 150 mV)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current charging",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 700,
          "max": 1500,
          "conditions": "充电",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current standby",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 30,
          "max": 100,
          "conditions": "待机 (PROG 悬空)",
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        },
        {
          "name": "Supply current charge complete, no battery",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 50,
          "max": 150,
          "conditions": "充电完成；无电池； VDD < VSTOP",
          "source_page": 5,
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        },
        {
          "name": "Output reverse leakage current standby",
          "symbol": "IDISCHARGE",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.5,
          "max": 2,
          "conditions": "待机 (PROG 悬空)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output reverse leakage current shutdown",
          "symbol": "IDISCHARGE",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.5,
          "max": 2,
          "conditions": "关断 (VDD VBAT 或 VDD VSTOP)",
          "source_page": 5,
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        },
        {
          "name": "Output reverse leakage current charge complete",
          "symbol": "IDISCHARGE",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 6,
          "max": 17,
          "conditions": "充电完成； VDD 为当前值",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "UVLO start threshold",
          "symbol": "VSTART",
          "kind": "electrical",
          "unit": "V",
          "min": 4.1,
          "typ": 4.15,
          "max": 4.25,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "UVLO stop threshold",
          "symbol": "VSTOP",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": 4.05,
          "max": 4.15,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "OVP start threshold (MCP73123)",
          "symbol": "VOVP",
          "kind": "electrical",
          "unit": "V",
          "min": 6.4,
          "typ": 6.5,
          "max": 6.6,
          "conditions": "MCP73123",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Regulated output voltage (MCP73123)",
          "symbol": "VREG",
          "kind": "electrical",
          "unit": "V",
          "min": 3.582,
          "typ": 3.6,
          "max": 3.618,
          "conditions": "TA= -5°C 至 +55°C， IOUT = 50 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output voltage tolerance",
          "symbol": "VRTOL",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "TA= -5°C 至 +55°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Line regulation (MCP73123)",
          "symbol": "VBAT/VBAT)/VDD",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.05,
          "max": 0.2,
          "conditions": "VDD = [VREG （典型值） +1V] 至 6V; IOUT = 50 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "VBAT/VBAT",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.05,
          "max": 0.2,
          "conditions": "IOUT = 50 mA - 150 mA; VDD = [VREG （典型值） +1V]",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Fast charge current regulation",
          "symbol": "IREG",
          "kind": "electrical",
          "unit": "mA",
          "min": 130,
          "typ": null,
          "max": 1100,
          "conditions": "TA=-5°C 至 +55°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Fast charge current regulation, PROG = 10 k",
          "symbol": "IREG",
          "kind": "electrical",
          "unit": "mA",
          "min": 117,
          "typ": 130,
          "max": 143,
          "conditions": "PROG = 10 k",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Fast charge current regulation, PROG = 1.1 k",
          "symbol": "IREG",
          "kind": "electrical",
          "unit": "mA",
          "min": 900,
          "typ": 1000,
          "max": 1100,
          "conditions": "PROG = 1.1 k",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Precharge current ratio",
          "symbol": "IPREG/IREG",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "PROG = 1 k 至 10 k TA=-5°C 至 +55°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Precharge voltage threshold ratio (MCP73123)",
          "symbol": "VPTH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.9,
          "typ": 2,
          "max": 2.1,
          "conditions": "MCP73123， VBAT 由低到高",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Charge termination current ratio (10% option)",
          "symbol": "ITERM/IREG",
          "kind": "electrical",
          "unit": "%",
          "min": 7.5,
          "typ": 10,
          "max": 12.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Recharge voltage threshold ratio",
          "symbol": "VRTH/VREG",
          "kind": "electrical",
          "unit": "%",
          "min": 93,
          "typ": 95,
          "max": 97,
          "conditions": "VBAT 由高到低",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "STAT sink current",
          "symbol": "ISINK",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 20,
          "max": 35,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "STAT low output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": 0.5,
          "conditions": "ISINK = 4 mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current STAT",
          "symbol": "ILK",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0.001,
          "max": 1,
          "conditions": "高阻抗，引脚上的 VDD",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Charge programming resistor range",
          "symbol": "RPROG",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 1,
          "typ": null,
          "max": 21,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "PROG voltage range",
          "symbol": "VPROG",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Charge time timer period, 6 h option",
          "symbol": "tELAPSED",
          "kind": "timing",
          "unit": "hours",
          "min": 5.4,
          "typ": 6,
          "max": 6.6,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Precharge timer period",
          "symbol": "tPRECHG",
          "kind": "timing",
          "unit": "hours",
          "min": 0.4,
          "typ": 0.5,
          "max": 0.6,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Specified temperature range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Status output turn-off time",
          "symbol": "tOFF",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "ISINK = 1 mA 至 0 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Status output turn-on time",
          "symbol": "tON",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "ISINK = 0 mA 至 1 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "VPROG absolute maximum",
          "symbol": "VPROG",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "ESD human body model",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "人体模型 (1.5 k 电阻与 100 pF 电容串联)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "UVLO hysteresis",
          "symbol": "VHYS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "OVP hysteresis",
          "symbol": "VOVPHYS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Power supply ripple rejection, 10 Hz to 1 kHz",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": -46,
          "max": null,
          "conditions": "IOUT = 20 mA， 10 Hz 至 1 kHz",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Power supply ripple rejection, 10 Hz to 10 kHz",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": -30,
          "max": null,
          "conditions": "IOUT = 20 mA， 10 Hz 至 10 kHz",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Battery short-circuit protection threshold (MCP73123)",
          "symbol": "VSHORT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.45,
          "max": null,
          "conditions": "MCP73123",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Battery short-circuit protection hysteresis",
          "symbol": "VBSPHYS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Battery short-circuit protection regulation current",
          "symbol": "ISHORT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 25,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Precharge current ratio, no precharge",
          "symbol": "IPREG/IREG",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "无预充电",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Precharge hysteresis",
          "symbol": "VPHYS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "VBAT 由高到低 (注 1)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "MOSFET on-resistance",
          "symbol": "RDSON",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 350,
          "max": null,
          "conditions": "VDD = 4.5V， TJ = 105°C （注 1）",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "PROG resistance when disabled",
          "symbol": "RPROG",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "关断阻抗",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Charge time timer disabled",
          "symbol": "tELAPSED",
          "kind": "timing",
          "unit": "hours",
          "min": null,
          "typ": 0,
          "max": null,
          "conditions": "禁用定时器",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Precharge timer disabled",
          "symbol": "tPRECHG",
          "kind": "timing",
          "unit": "hours",
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