CJ9112T6A

{
  "schema_version": 1,
  "type": "component",
  "slug": "cj9112t6a",
  "title": "CJ9112T6A",
  "brief": "Changjing DC-DC Converters, SOT-23-6L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "cj9112t6a"
  ],
  "component": {
    "mpn": "CJ9112T6A",
    "manufacturer": "Changjing",
    "package": "SOT-23-6L",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2108141930_Jiangsu-Changjing-Electronics-Technology-Co---Ltd--CJ9112T6A_C2829459.pdf",
    "parts": {
      "symbol": "cj9112t6a.kicad_sym",
      "footprint": "cj9112t6a.kicad_mod",
      "model_3d": "cj9112t6a-etched.glb",
      "model_3d_plain": "cj9112t6a.glb",
      "model_3d_step": "cj9112t6a-etched.step",
      "model_3d_step_plain": "cj9112t6a.step",
      "lbr": "cj9112t6a.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "passive",
        "description": "Switch node. Drain of the internal N-channel boost switch and source of the synchronous P-channel rectifier. Connects to the external boost inductor (typ. 4.7 µH) whose other end ties to VIN. Rated -0.3 V to 6 V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground and reference for all internal voltages. Tie directly to the system ground plane close to the input and output capacitor return terminals."
      },
      {
        "number": "3",
        "name": "VFB",
        "type": "input",
        "description": "Feedback voltage input to the internal error amplifier. Connects to the mid-point of an external resistor divider from VOUT to GND. Regulated to VFB = 1.215 V (typ., 1.179 V-1.251 V). Feedback input bias current is ~10 nA."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Enable control input. Logic high (>=70% of VIN) turns the converter on; logic low (<=20% of VIN) puts the device into shutdown. In shutdown the 'A' variant provides true load disconnect (VOUT = 0 V). EN input leakage ~5 nA at VEN=5 V. Do not float."
      },
      {
        "number": "5",
        "name": "VOUT",
        "type": "power_out",
        "description": "Boost converter output and sense pin for the internal synchronous P-channel rectifier. Adjustable 1.8 V to 5.5 V via external feedback divider. Requires an external output capacitor (typ. 10 µF ceramic). Also supplies internal circuitry once VOUT > VIN."
      },
      {
        "number": "6",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin (battery input). Operating range 0.82 V to 5.5 V after start-up (start-up threshold 0.82 V @ 1 mA load; minimum operating 0.65 V). Absolute maximum 6 V. Bypass with a local ceramic capacitor (typ. 4.7 µF)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2108141930_Jiangsu-Changjing-Electronics-Technology-Co---Ltd--CJ9112T6A_C2829459.pdf",
        "pages": 9,
        "sha256": "1fbd0a963e871d48",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cj9112t6a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "sha256": "8c0ac300a9dd427899673cdd0119ec6e0d38aff3065fe4248607d96babb48d20",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Changjing",
      "Package": "SOT-23-6L",
      "Category": "PMIC",
      "Pins": "6"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cj9112t6a"
  ],
  "discovery_pitch": "CJ9112T6A (Changjing) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cj9112t6a.kicad_sym",
    "cj9112t6a.kicad_mod",
    "cj9112t6a.glb",
    "cj9112t6a.step",
    "cj9112t6a.lbr",
    "docs/hero.png",
    "docs/cj9112t6a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cj9112t6a-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "CJ9112T6A",
      "kind": "packaging"
    },
    {
      "mpn": "CJ9112T6B",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-24T19:12:18.365Z"
}