CN3717

{
  "schema_version": 1,
  "type": "component",
  "slug": "cn3717",
  "title": "CN3717",
  "brief": "ShangHai Consonance Elec Battery Management, TSSOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "cn3717"
  ],
  "component": {
    "mpn": "CN3717",
    "manufacturer": "ShangHai Consonance Elec",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "PMIC",
    "subcategory": "Battery Management",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b85fb3af0deb4951a4ac0b7ff4444671.pdf",
    "parts": {
      "symbol": "cn3717.kicad_sym",
      "footprint": "cn3717.kicad_mod",
      "model_3d": "cn3717-etched.glb",
      "model_3d_plain": "cn3717.glb",
      "model_3d_step": "cn3717-etched.step",
      "model_3d_step_plain": "cn3717.step",
      "lbr": "cn3717.lbr"
    },
    "distributor_links": {
      "lcsc": "C23839"
    },
    "pins": [
      {
        "number": "1",
        "name": "VG",
        "type": "power_out",
        "description": "Internal LDO regulator output that supplies the internal driver circuitry. Connect a 100nF capacitor between VG and VCC."
      },
      {
        "number": "2",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground return for the gate-driver and high-current internal paths."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Analog signal ground for the internal reference, control and sensing circuitry."
      },
      {
        "number": "4",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain charge status output (active-low, bar-CHRG). Pulled low during trickle, constant-current and over-charge states; high-impedance otherwise. Sinks 7-18mA (typ 12mA) at VCHRG=1V; leakage <=1uA at 25V."
      },
      {
        "number": "5",
        "name": "DONE",
        "type": "output",
        "description": "Open-drain end-of-charge status output (active-low, bar-DONE). Pulled low in float-charge state, high-impedance otherwise. Sinks 7-18mA (typ 12mA) at VDONE=1V; leakage <=1uA at 25V."
      },
      {
        "number": "6",
        "name": "TEMP",
        "type": "input",
        "description": "Battery-temperature sense input. Connect an NTC thermistor (approx 10k at 25C) from TEMP to GND. Internal ~50uA pull-up; comparator thresholds Vthh=1.61V (typ) and Vthl=0.175V (typ) define allowed temperature window. Temperature-abnormal shutdown only active during trickle, constant-current and over-charge phases."
      },
      {
        "number": "7",
        "name": "EOC",
        "type": "input",
        "description": "End-of-charge current program input. Connect directly to GND or through an external resistor Rext (<=100k) to set the over-charge termination current: IEOC = 1.278*(14350+Rext) / (RCS*1e6). IEOC/ICH ranges from 10.5% (Rext=0) to 83.5% (Rext=100k)."
      },
      {
        "number": "8",
        "name": "COM1",
        "type": "passive",
        "description": "Loop compensation input 1. Connect a 470pF ceramic capacitor from COM1 to GND for control-loop stability."
      },
      {
        "number": "9",
        "name": "COM2",
        "type": "passive",
        "description": "Loop compensation input 2. Connect a 120 ohm resistor in series with a 220nF ceramic capacitor from COM2 to GND."
      },
      {
        "number": "10",
        "name": "FB",
        "type": "input",
        "description": "Battery-voltage feedback input. External resistor divider (R6/R7) from BAT to FB to GND sets the over-charge and float voltages: VBAT = 3.69*(1+R7/R6) + IB*R7, with IB (FB bias current) approx 40nA typ (260nA max). Max settable over-charge voltage 25V."
      },
      {
        "number": "11",
        "name": "COM3",
        "type": "passive",
        "description": "Loop compensation input 3. Connect a 100nF capacitor from COM3 to GND. Absolute max voltage on COM3 to GND is 6.5V."
      },
      {
        "number": "12",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "13",
        "name": "CSP",
        "type": "input",
        "description": "Positive input of the charge-current sense amplifier. Measures the voltage across the current-sense resistor RCS placed between CSP and BAT; feeds the internal current regulation loop. Constant-current threshold VCS(CSP-BAT) = 120mV typ (113-127mV); trickle-mode threshold 23mV typ. Absolute max 28V."
      },
      {
        "number": "14",
        "name": "BAT",
        "type": "input",
        "description": "Negative input of the charge-current sense amplifier and battery-terminal connection. Measures VRCS together with CSP; typical DC current into pin approx 10uA (VBAT=12V). Absolute max 28V."
      },
      {
        "number": "15",
        "name": "VCC",
        "type": "power_in",
        "description": "Main supply / external power input, also the supply for internal circuitry. Operating range 7.5V to 28V; UVLO rising threshold 4.2-7.3V (typ 6V). Requires a local filter/bulk capacitor to GND."
      },
      {
        "number": "16",
        "name": "DRV",
        "type": "output",
        "description": "Gate-drive output for the external P-channel MOSFET. VH = VCC-60mV (at IDRV=-10mA); VL = VCC-6.5V typ (5-8V) at IDRV=0. Rise/fall times ~40ns typ into 2nF load. Internal clamp keeps VCC-VDRV below 8V max so low-Vgs P-MOSFETs may be used."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/b85fb3af0deb4951a4ac0b7ff4444671.pdf",
        "pages": 11,
        "sha256": "6a59b77def44b583",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
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        -2.275
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TSSOP-16_4.4x5mm_P0.65mm@sha256:fbac79fc5f310754",
      "mark": "drawn"
    },
    "models_3d": [
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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        "zmin_mm": -0.0,
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        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "ShangHai Consonance Elec",
      "Package": "TSSOP-16",
      "Category": "PMIC",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cn3717"
  ],
  "discovery_pitch": "CN3717 (ShangHai Consonance Elec) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
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    "cn3717.kicad_sym",
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    "cn3717.glb",
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    "cn3717-etched.step",
    "cn3717.lbr",
    "docs/hero.png",
    "docs/cn3717-datasheet.pdf",
    "viewers/symbol.html",
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  "visibility": {
    "public": true
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  "variants": [
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      "mpn": "CN3717",
      "kind": "packaging"
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  ],
  "updated_at": "2026-09-24T19:22:14.668Z"
}