CN3704

{
  "schema_version": 1,
  "type": "component",
  "slug": "cn3704",
  "title": "CN3704",
  "brief": "ShangHai Consonance Elec 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)",
    "cn3704",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CN3704",
    "manufacturer": "ShangHai Consonance Elec",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586179146548043776",
    "parts": {
      "symbol": "cn3704.kicad_sym",
      "footprint": "cn3704.kicad_mod",
      "model_3d": "cn3704-hero.glb",
      "model_3d_plain": "cn3704-etched.glb",
      "model_3d_step": "cn3704-etched.step",
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      "lbr": "cn3704.lbr"
    },
    "distributor_links": {
      "lcsc": "C51659"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T04:30:18Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VG",
        "type": "power_out",
        "description": "Internal voltage modulator output that supplies the internal driver circuits, with a 100nF capacitor required between VG and VCC."
      },
      {
        "number": "2",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the high-current switching path, to be returned separately from the analog ground."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Analog ground that also provides a heat-dissipation path, so its copper area should be made as large as possible."
      },
      {
        "number": "4",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain output that is pulled low during charging and is high-impedance in other states (drive a LED through a pull-up; up to 25V in charge-complete mode leakage is 1uA max)."
      },
      {
        "number": "5",
        "name": "DONE",
        "type": "output",
        "description": "Open-drain output that is pulled low in the charge-complete state and is high-impedance in other states (leakage 1uA max at 25V in charge mode)."
      },
      {
        "number": "6",
        "name": "TEMP",
        "type": "input",
        "description": "Battery temperature monitor input; a negative-temperature-coefficient thermistor (10kΩ at 25°C) is connected between TEMP and GND, with a 50uA pull-up and comparator thresholds of 1.61V high and 0.175V low."
      },
      {
        "number": "7",
        "name": "EOC",
        "type": "input",
        "description": "End-of-charge current setting pin, connected directly to GND or through a resistor to GND, where Rext must not exceed 100kΩ or charge will not terminate correctly."
      },
      {
        "number": "8",
        "name": "COM1",
        "type": "passive",
        "description": "Loop compensation input 1, which requires a 470pF capacitor to GND."
      },
      {
        "number": "9",
        "name": "COM2",
        "type": "passive",
        "description": "Loop compensation input 2, which requires a 120Ω resistor in series with a 220nF capacitor to GND."
      },
      {
        "number": "10",
        "name": "test",
        "type": "input",
        "description": "Test pin that must be connected to GND."
      },
      {
        "number": "11",
        "name": "COM3",
        "type": "passive",
        "description": "Loop compensation input 3, which requires a 100nF ceramic capacitor to GND."
      },
      {
        "number": "12",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "13",
        "name": "CSP",
        "type": "input",
        "description": "Positive charge-current sense input that, together with BAT across the sense resistor RCS, sets the constant charge current at 200mV/RCS and must be connected directly to RCS."
      },
      {
        "number": "14",
        "name": "BAT",
        "type": "input",
        "description": "Battery voltage sense input and negative charge-current sense input that, with the internal divider and reference, regulates the constant-voltage charge at 16.8V ±1%."
      },
      {
        "number": "15",
        "name": "VCC",
        "type": "power_in",
        "description": "External supply input (7.5V to 28V) that also powers the internal circuits and needs a filter capacitor to GND; absolute maximum is -0.3V to 30V."
      },
      {
        "number": "16",
        "name": "DRV",
        "type": "output",
        "description": "Gate drive output for the external P-channel MOSFET, with the low level clamped to about 8V (max) below VCC."
      }
    ],
    "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: Datasheet says only that the test pin must be tied to GND; the ERC type 'input' is my choice, not st; CHRG and DONE are open-drain outputs; KiCad has no open-drain class, so 'output' was used.; Loop-compensation pins are typed 'passive' as an inference from their RC/C-to-GND connection; the da"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0659,
        "at": "2026-10-19T04:28:01"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586179146548043776",
        "pages": 11,
        "sha256": "ca89e858f5e1cfad",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-19",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "ShangHai Consonance Elec",
      "Package": "TSSOP-16",
      "Category": "Power Management (PMIC)",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
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          "name": "VCC, VG, DRV, CHRG, DONE to GND voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
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          "source_page": 3,
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        {
          "name": "CSP, BAT to GND voltage",
          "symbol": "",
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          "source_page": 3,
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        },
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          "name": "COM3 to GND voltage",
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          "name": "Other pins to GND voltage",
          "symbol": "",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "to GND; upper limit printed as VCOM3+0.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Operating ambient temperature",
          "symbol": "",
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          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
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        {
          "name": "Soldering temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "10 s",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input voltage range",
          "symbol": "VCC",
          "kind": "electrical",
          "unit": "V",
          "min": 7.5,
          "typ": null,
          "max": 28,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Undervoltage lockout threshold",
          "symbol": "UVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 4.2,
          "typ": 6,
          "max": 7.3,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Chip operating current",
          "symbol": "IVCC",
          "kind": "electrical",
          "unit": "mA",
          "min": 1.4,
          "typ": 1.95,
          "max": 2.5,
          "conditions": "VBAT>VREG",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Regulation voltage",
          "symbol": "VREG",
          "kind": "electrical",
          "unit": "V",
          "min": 16.632,
          "typ": 16.8,
          "max": 16.968,
          "conditions": "恒压充电模式",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Current sense voltage",
          "symbol": "VCS",
          "kind": "electrical",
          "unit": "mV",
          "min": 190,
          "typ": 200,
          "max": 210,
          "conditions": "VBAT>5.6V, VCSP-VBAT",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Current sense voltage",
          "symbol": "VCS",
          "kind": "electrical",
          "unit": "mV",
          "min": 18,
          "typ": 30,
          "max": 42,
          "conditions": "VBAT<5.6V, VCSP-VBAT",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Current into BAT pin",
          "symbol": "IBAT",
          "kind": "electrical",
          "unit": "uA",
          "min": 15,
          "typ": null,
          "max": 25,
          "conditions": "充电结束模式或睡眠模式",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Trickle charge threshold",
          "symbol": "VPRE",
          "kind": "electrical",
          "unit": "V",
          "min": 10.8,
          "typ": 11.2,
          "max": 11.6,
          "conditions": "BAT pin voltage rising",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Overvoltage threshold",
          "symbol": "Vov",
          "kind": "electrical",
          "unit": "",
          "min": 1.06,
          "typ": 1.08,
          "max": 1.1,
          "conditions": "电池电压上升",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Overvoltage release threshold",
          "symbol": "Vclr",
          "kind": "electrical",
          "unit": "",
          "min": 0.98,
          "typ": 1,
          "max": 1.02,
          "conditions": "电池电压下降",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "TEMP pin pull-up current",
          "symbol": "Iup",
          "kind": "electrical",
          "unit": "uA",
          "min": 41,
          "typ": 50,
          "max": 65,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Comparator high threshold",
          "symbol": "Vthh",
          "kind": "electrical",
          "unit": "V",
          "min": 1.57,
          "typ": 1.61,
          "max": 1.65,
          "conditions": "TEMP pin voltage rising",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Comparator low threshold",
          "symbol": "Vthl",
          "kind": "electrical",
          "unit": "V",
          "min": 0.145,
          "typ": 0.175,
          "max": 0.205,
          "conditions": "TEMP pin voltage falling",
          "source_page": 4,
          "source": "datasheet"
        },
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          "name": "CHRG pin pull-down current",
          "symbol": "ICHRG",
          "kind": "electrical",
          "unit": "mA",
          "min": 7,
          "typ": 12,
          "max": 18,
          "conditions": "VCHRG=1V，充电模式",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "CHRG pin leakage current",
          "symbol": "ILK1",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VCHRG=25V，充电结束模式",
          "source_page": 4,
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        },
        {
          "name": "DONE pin pull-down current",
          "symbol": "IDONE",
          "kind": "electrical",
          "unit": "mA",
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          "typ": 12,
          "max": 18,
          "conditions": "VDONE=1V，充电结束模式",
          "source_page": 4,
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        },
        {
          "name": "DONE pin leakage current",
          "symbol": "ILK2",
          "kind": "electrical",
          "unit": "uA",
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          "typ": null,
          "max": 1,
          "conditions": "VDONE=25V，充电模式",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Oscillator frequency",
          "symbol": "fosc",
          "kind": "electrical",
          "unit": "kHZ",
          "min": 240,
          "typ": 300,
          "max": 360,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum duty cycle",
          "symbol": "Dmax",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 94,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Sleep threshold (VCC-VBAT)",
          "symbol": "VSLP",
          "kind": "electrical",
          "unit": "V",
          "min": 0.06,
          "typ": 0.1,
          "max": 0.14,
          "conditions": "VBAT=8V; VCC falling",
          "source_page": 4,
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        {
          "name": "Sleep threshold (VCC-VBAT)",
          "symbol": "VSLP",
          "kind": "electrical",
          "unit": "V",
          "min": 0.1,
          "typ": 0.14,
          "max": 0.18,
          "conditions": "VBAT=12V; VCC falling",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Sleep threshold (VCC-VBAT)",
          "symbol": "VSLP",
          "kind": "electrical",
          "unit": "V",
          "min": 0.18,
          "typ": 0.23,
          "max": 0.28,
          "conditions": "VBAT=18V; VCC falling",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Sleep release threshold (VCC-VBAT)",
          "symbol": "VSLPR",
          "kind": "electrical",
          "unit": "V",
          "min": 0.26,
          "typ": 0.32,
          "max": 0.39,
          "conditions": "VBAT=8V; VCC rising",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Sleep release threshold (VCC-VBAT)",
          "symbol": "VSLPR",
          "kind": "electrical",
          "unit": "V",
          "min": 0.32,
          "typ": 0.42,
          "max": 0.52,
          "conditions": "VBAT=12V; VCC rising",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Sleep release threshold (VCC-VBAT)",
          "symbol": "VSLPR",
          "kind": "electrical",
          "unit": "V",
          "min": 0.38,
          "typ": 0.47,
          "max": 0.58,
          "conditions": "VBAT=18V; VCC rising",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "DRV low level (VCC-VDRV)",
          "symbol": "VL",
          "kind": "electrical",
          "unit": "V",
          "min": 5,
          "typ": 6.5,
          "max": 8,
          "conditions": "IDRV=0mA",
          "source_page": 4,
          "source": "datasheet"
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          "name": "DRV high level (VCC-VDRV)",
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          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 60,
          "conditions": "IDRV=-10mA",
          "source_page": 4,
          "source": "datasheet"
        },
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          "name": "DRV rise time",
          "symbol": "tr",
          "kind": "electrical",
          "unit": "ns",
          "min": 30,
          "typ": 40,
          "max": 65,
          "conditions": "Cload=2nF, 10% to 90%",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "DRV fall time",
          "symbol": "tf",
          "kind": "electrical",
          "unit": "ns",
          "min": 30,
          "typ": 40,
          "max": 65,
          "conditions": "Cload=2nF, 90% to 10%",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Recharge threshold",
          "symbol": "VRE",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 16,
          "max": null,
          "conditions": "BAT pin voltage falling",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Trickle charge threshold hysteresis",
          "symbol": "HPRE",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.4,
          "max": null,
          "conditions": "BAT pin voltage falling",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
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