IP2312-4V35

{
  "schema_version": 1,
  "type": "component",
  "slug": "ip2312-4v35",
  "title": "IP2312-4V35",
  "brief": "INJOINIC DC-DC Converters, ESOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "ip2312-4v35"
  ],
  "component": {
    "mpn": "IP2312-4V35",
    "manufacturer": "INJOINIC",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/089254a207b27baf260c3da0f2320b9a.pdf",
    "parts": {
      "symbol": "ip2312-4v35.kicad_sym",
      "footprint": "ip2312-4v35.kicad_mod",
      "model_3d": "ip2312-4v35-etched.glb",
      "model_3d_plain": "ip2312-4v35.glb",
      "model_3d_step": "ip2312-4v35-etched.step",
      "model_3d_step_plain": "ip2312-4v35.step",
      "lbr": "ip2312-4v35.lbr"
    },
    "distributor_links": {
      "lcsc": "C605433"
    },
    "pins": [
      {
        "number": "1",
        "name": "D1",
        "type": "output",
        "description": "LED drive pin / battery-type select pin (IP2312_VSET). Drives an LED indicator (3-10 mA) and, on VSET variants, sets the target charge voltage via an external pull-down resistor (NC=4.2V, 43k=4.3V, 75k=4.35V, 100k=4.4V)."
      },
      {
        "number": "2",
        "name": "TEST",
        "type": "passive",
        "description": "Test pin. Connect through a 1kΩ resistor to the battery positive terminal (VBAT)."
      },
      {
        "number": "3",
        "name": "D2",
        "type": "output",
        "description": "LED drive pin. Drives the second (charge-complete) status LED at 3-10 mA typical."
      },
      {
        "number": "4",
        "name": "NTC",
        "type": "input",
        "description": "NTC temperature-protection input. Sources 20 μA out to an external NTC thermistor to ground; internal comparators trip at VH=0.56V (over-temp), VM=0.60V (warn, reduces current by half), and VL=1.32V (under-temp). Connect a 51kΩ resistor to GND if unused (do not float)."
      },
      {
        "number": "5",
        "name": "BAT",
        "type": "power_out",
        "description": "Battery positive-terminal connection. Buck-converter output to the Li-ion cell; charge termination voltage 4.35V (-4V35 variant), up to 3A charge current. Absolute max 6.5V (9V for <10 μs)."
      },
      {
        "number": "6",
        "name": "ICHG",
        "type": "passive",
        "description": "Charge-current setting pin. External resistor RICHG to GND programs the constant-current charge level: ICC = 135000 / RICHG (e.g. 135kΩ→1A, 91kΩ→1.5A, 45kΩ→3A). Max useful RICHG = 170kΩ; leaving NC defaults to 2.1A."
      },
      {
        "number": "7",
        "name": "SW",
        "type": "output",
        "description": "DC-DC switching node. Connects to the external buck inductor (typ. 1 μH). Absolute max 6.5V (9V for <10 μs) with integrated PMOS (35 mΩ) and NMOS (30 mΩ) power switches operating at 750 kHz."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "5V charge input from adapter/USB. Recommended 4.5-5.5V, absolute max 6.5V (9V for <10 μs). Integrated UVLO at 4.5V and OVP at 5.6V; input current auto-adjusts to keep adapter from collapsing."
      },
      {
        "number": "9",
        "name": "EPAD",
        "type": "power_in",
        "description": "Exposed thermal pad on package underside. Ground (GND) connection; must be soldered to the PCB ground plane for thermal dissipation (θJA = 60 °C/W)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/089254a207b27baf260c3da0f2320b9a.pdf",
        "pages": 11,
        "sha256": "37609e8a8c4601a0",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm@sha256:5848244c5e72002e",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "ip2312-4v35.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ip2312-4v35-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "451f58d08ebba71bdf48c508304fd1cb14485c26e995d33e17f9ef50b8cbec6f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "INJOINIC",
      "Package": "ESOP-8",
      "Category": "PMIC",
      "Pins": "9"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ip2312-4v35"
  ],
  "discovery_pitch": "IP2312-4V35 (INJOINIC) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ip2312-4v35.kicad_sym",
    "ip2312-4v35.kicad_mod",
    "ip2312-4v35.glb",
    "ip2312-4v35.step",
    "ip2312-4v35-etched.step",
    "ip2312-4v35.lbr",
    "docs/hero.png",
    "docs/ip2312-4v35-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "variants": [
    {
      "mpn": "IP2312-4V35",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T22:45:37.644Z"
}