CN3702

{
  "schema_version": 1,
  "type": "component",
  "slug": "cn3702",
  "title": "CN3702",
  "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",
    "cn3702"
  ],
  "component": {
    "mpn": "CN3702",
    "manufacturer": "ShangHai Consonance Elec",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "PMIC",
    "subcategory": "Battery Management",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8714de74a35441fdaab1255da3df1ab7.pdf",
    "parts": {
      "symbol": "cn3702.kicad_sym",
      "footprint": "cn3702.kicad_mod",
      "model_3d": "cn3702-etched.glb",
      "model_3d_plain": "cn3702.glb",
      "model_3d_step": "cn3702-etched.step",
      "model_3d_step_plain": "cn3702.step",
      "lbr": "cn3702.lbr"
    },
    "distributor_links": {
      "lcsc": "C40655"
    },
    "pins": [
      {
        "number": "1",
        "name": "VG",
        "type": "power_out",
        "description": "Internal LDO regulator output that supplies the internal gate-driver circuitry. Connect a 100 nF ceramic capacitor between VG and VCC."
      },
      {
        "number": "2",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the internal gate driver and high-current return path."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Analog ground for internal reference, amplifier and control circuitry."
      },
      {
        "number": "4",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain charge-status output. Pulled low by internal transistor during charging; high-impedance otherwise. Sink capability ~12 mA (typ) at 1 V."
      },
      {
        "number": "5",
        "name": "DONE",
        "type": "output",
        "description": "Open-drain charge-complete output. Pulled low by internal transistor when charging has finished; high-impedance otherwise. Sink capability ~12 mA (typ) at 1 V."
      },
      {
        "number": "6",
        "name": "TEMP",
        "type": "input",
        "description": "Battery temperature-monitor input. Connect an NTC thermistor (10 kΩ @ 25 °C) between TEMP and GND. Internal ~50 uA pull-up; comparator thresholds ~1.61 V (high-temp) and ~0.175 V (low-temp) suspend charging when temperature is out of range."
      },
      {
        "number": "7",
        "name": "EOC",
        "type": "input",
        "description": "End-of-charge current programming input. Connect directly to GND for the minimum termination current or through a resistor Rext (≤100 kΩ) to GND to program the termination current per IEOC = 1.278·(14350 + Rext) / (Rcs·10^6)."
      },
      {
        "number": "8",
        "name": "COM1",
        "type": "passive",
        "description": "Loop compensation input 1. Connect a 470 pF capacitor between COM1 and GND."
      },
      {
        "number": "9",
        "name": "COM2",
        "type": "passive",
        "description": "Loop compensation input 2. Connect a series 120 Ω resistor and 220 nF capacitor between COM2 and GND."
      },
      {
        "number": "10",
        "name": "test",
        "type": "input",
        "description": "Factory test pin. Must be connected directly to GND for normal operation."
      },
      {
        "number": "11",
        "name": "COM3",
        "type": "passive",
        "description": "Loop compensation input 3. Connect a 100 nF capacitor between COM3 and GND. Absolute-max voltage 6.5 V to GND."
      },
      {
        "number": "12",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "13",
        "name": "CSP",
        "type": "input",
        "description": "Positive charge-current sense input. Senses the voltage across the external current-sense resistor Rcs connected between CSP and BAT; the internal loop regulates VCSP−VBAT to 200 mV (typ) so that Icharge = 200 mV / Rcs."
      },
      {
        "number": "14",
        "name": "BAT",
        "type": "input",
        "description": "Battery-voltage sense input and negative current-sense input. Internal precision resistor divider and reference set the 8.4 V (±1%) constant-voltage regulation point for the 2-cell battery."
      },
      {
        "number": "15",
        "name": "VCC",
        "type": "power_in",
        "description": "External supply input, also powers internal circuitry. Operating range 7.5 V to 28 V; connect a bypass capacitor from VCC to GND. UVLO threshold ~6 V typical."
      },
      {
        "number": "16",
        "name": "DRV",
        "type": "output",
        "description": "Gate driver output for the external P-channel MOSFET. Drives referenced to VCC (VCC−VDRV ≈ 60 mV high, ≥5.8 V low), with 30-65 ns typical rise/fall times into a 2 nF load."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/8714de74a35441fdaab1255da3df1ab7.pdf",
        "pages": 11,
        "sha256": "c3d58229f9a0f8f3",
        "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": [
        -2.8625,
        -2.275
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TSSOP-16_4.4x5mm_P0.65mm@sha256:fbac79fc5f310754",
      "mark": "drawn"
    },
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
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          1.1
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        "zmin_mm": 0,
        "centre_offset_mm": 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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        "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": [
    "cn3702"
  ],
  "discovery_pitch": "CN3702 (ShangHai Consonance Elec) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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  "files": [
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    "cn3702-etched.step",
    "cn3702.lbr",
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  "visibility": {
    "public": true
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  "variants": [
    {
      "mpn": "CN3702",
      "kind": "packaging"
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  "updated_at": "2026-09-24T19:21:50.926Z"
}