IP5219

{
  "schema_version": 1,
  "type": "component",
  "slug": "ip5219",
  "title": "IP5219",
  "brief": "INJOINIC Battery Management, QFN-24-EP(4x4). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "ip5219"
  ],
  "component": {
    "mpn": "IP5219",
    "manufacturer": "INJOINIC",
    "package": "QFN-24-EP(4x4)",
    "pin_count": 25,
    "category": "PMIC",
    "subcategory": "Battery Management",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ec6b4fccfdb633b267c8b046c4f51411.pdf",
    "parts": {
      "symbol": "ip5219.kicad_sym",
      "footprint": "ip5219.kicad_mod",
      "model_3d": "ip5219-etched.glb",
      "model_3d_plain": "ip5219.glb",
      "model_3d_step": "ip5219-etched.step",
      "model_3d_step_plain": "ip5219.step",
      "lbr": "ip5219.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "L2/SDA",
        "type": "bidirectional",
        "description": "Battery indicator LED2 drive pin; alternate function is I2C SDA data line when I2C interface is enabled."
      },
      {
        "number": "2",
        "name": "L3",
        "type": "output",
        "description": "Battery indicator LED3 drive pin (LED SOC indicator). Datasheet text says 'Battery indicator pin2' but pin 2 is L3 in the diagram - likely a typo for pin3."
      },
      {
        "number": "3",
        "name": "VREG",
        "type": "power_out",
        "description": "Internal 3.1V LDO regulator output. Provides ~3.1V rail used by internal analog blocks and the CC pull-up resistor network."
      },
      {
        "number": "4",
        "name": "VTHS",
        "type": "input",
        "description": "Battery OCV (open-circuit voltage) select input - used with an external resistor to configure the battery voltage threshold."
      },
      {
        "number": "5",
        "name": "RSET",
        "type": "input",
        "description": "Battery internal-resistance select input - sets the assumed battery ESR via an external resistor for SOC estimation."
      },
      {
        "number": "6",
        "name": "NTC",
        "type": "input",
        "description": "Battery NTC thermistor sense input for battery temperature protection during charge/discharge."
      },
      {
        "number": "7",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for internal analog blocks. Connect to the main ground plane at a single point."
      },
      {
        "number": "8",
        "name": "KEY",
        "type": "input",
        "description": "Push-button key input. A short press wakes the device / turns on LED indicator; long-press toggles torch/LIGHT function."
      },
      {
        "number": "9",
        "name": "BAT",
        "type": "power_in",
        "description": "Battery voltage sense and charge/discharge pin. Connects to the Li-ion cell positive terminal (charge output / boost input, VBAT 3.0-4.4V)."
      },
      {
        "number": "10",
        "name": "CC1",
        "type": "bidirectional",
        "description": "USB TYPE-C CC1 configuration channel - used for DRP source/sink detection with internal Rp/Rd network."
      },
      {
        "number": "11",
        "name": "CC2",
        "type": "bidirectional",
        "description": "USB TYPE-C CC2 configuration channel - used for DRP source/sink detection with internal Rp/Rd network."
      },
      {
        "number": "12",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground return for the boost/charge switching stage. Connect via a low-impedance path to the input/output caps."
      },
      {
        "number": "13",
        "name": "LX",
        "type": "power_out",
        "description": "DC-DC switching node - connects to the external 1µH inductor shared by the synchronous charger and boost converter."
      },
      {
        "number": "14",
        "name": "LX",
        "type": "power_out",
        "description": "DC-DC switching node (paralleled with pins 13,15) - connect to inductor."
      },
      {
        "number": "15",
        "name": "LX",
        "type": "power_out",
        "description": "DC-DC switching node (paralleled with pins 13,14) - connect to inductor."
      },
      {
        "number": "16",
        "name": "VOUT",
        "type": "power_out",
        "description": "DC-DC boost 5V output pin. Delivers up to 2.4A to USB-A / TYPE-C load; decouple with bulk + ceramic capacitors."
      },
      {
        "number": "17",
        "name": "VOUT",
        "type": "power_out",
        "description": "DC-DC boost 5V output pin (paralleled with pin 16)."
      },
      {
        "number": "18",
        "name": "TC1",
        "type": "output",
        "description": "VBUS charge-input PMOS gate control pin (channel 1) - drives external/back-to-back PMOS used for input path switching."
      },
      {
        "number": "19",
        "name": "TC2",
        "type": "output",
        "description": "VBUS charge-input PMOS gate control pin (channel 2) - drives external/back-to-back PMOS used for input path switching."
      },
      {
        "number": "20",
        "name": "VIN",
        "type": "power_in",
        "description": "Charger 5V input pin (from VBUS via TYPE-C / MicroUSB). Recommended 4.75-5.5V."
      },
      {
        "number": "21",
        "name": "VIN",
        "type": "power_in",
        "description": "Charger 5V input pin (paralleled with pin 20)."
      },
      {
        "number": "22",
        "name": "LIGHT",
        "type": "output",
        "description": "LED torch/flashlight driver - open-drain output for driving a torch LED (up to ~30 mA typ)."
      },
      {
        "number": "23",
        "name": "VSET",
        "type": "input",
        "description": "Battery target-voltage select input - configures target charge voltage (4.20/4.35/4.40V) via external resistor / strap."
      },
      {
        "number": "24",
        "name": "L1/SCK",
        "type": "bidirectional",
        "description": "Battery indicator LED1 drive pin; alternate function is I2C SCK clock line when I2C interface is enabled (Datasheet labels this SCK though standard I2C is SCL)."
      },
      {
        "number": "25",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed thermal pad (EPAD) - must be soldered to PCB ground plane for thermal dissipation and electrical ground."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/ec6b4fccfdb633b267c8b046c4f51411.pdf",
        "pages": 20,
        "sha256": "b823e8324ee2c179",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ip5219.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f7d256794c4147daf24dcae0554fae18510315e565ad1e239b475be7fef80d8b",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ip5219-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
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        "sha256": "cef022a55cfa1cad651590b7f57c9eb6c74746463e18bdb1e272c6949694fb9f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "INJOINIC",
      "Package": "QFN-24-EP(4x4)",
      "Category": "PMIC",
      "Pins": "25"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ip5219"
  ],
  "discovery_pitch": "IP5219 (INJOINIC) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ip5219.kicad_sym",
    "ip5219.kicad_mod",
    "ip5219.glb",
    "ip5219.step",
    "ip5219-etched.step",
    "ip5219.lbr",
    "docs/hero.png",
    "docs/ip5219-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T22:46:51.347Z"
}