main
Ray Set visibility: public 108a385 15d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "79l09u",
  "title": "79L09U",
  "brief": "CBI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "manufacturer": "CBI",
    "package": "SOT-89-3",
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    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
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      "lbr": "79l09u.lbr"
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    "distributor_links": {
      "lcsc": "C2880153"
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    "distributor_check": {
      "checked_at": "2026-10-18T01:07:33Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
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    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground reference pin of the negative three-terminal regulator."
      },
      {
        "number": "2",
        "name": "IN",
        "type": "power_in",
        "description": "Negative unregulated input, with an absolute maximum rating of -30 V; a 0.33 µF input bypass capacitor is recommended close to the regulator."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated -9 V output rated for a maximum output current of 0.1 A, with a 0.1 µF output bypass capacitor recommended close to the regulator."
      }
    ],
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      "factory_chain": {
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        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet gives the pin names and functions but does not state electrical pin types; GND is type"
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        "pages_sent": 2,
        "cost_usd": 0.0121,
        "at": "2026-10-18T01:05:35"
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        "pages": 2,
        "sha256": "7131df42ebdceb8f",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  "metadata": {
    "specs": {
      "Manufacturer": "CBI",
      "Package": "SOT-89-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
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    "characteristics": {
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      "datasheet_sha256": "7131df42ebdceb8f82a2a6225c5a37644d208c7f4154fa33c2c239f758d6175d",
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          "kind": "electrical",
          "unit": "V",
          "min": -8.64,
          "typ": -9,
          "max": -9.36,
          "conditions": "25℃",
          "source_page": 1,
          "source": "datasheet"
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        {
          "name": "Output Voltage (Vl -12V to -24V, Io 1mA-40mA)",
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          "kind": "electrical",
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          "min": -8.55,
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          "min": -30,
          "typ": null,
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        },
        {
          "name": "Operating Junction Temperature Range",
          "symbol": "TOPR",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": 0,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "Ripple Rejection",
          "symbol": "RR",
          "kind": "electrical",
          "unit": "dB",
          "min": 45,
          "typ": null,
          "max": null,
          "conditions": "-15V≤Vl≤-24V, f=120Hz, 0-125℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.7,
          "conditions": "25℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Output Noise Voltage",
          "symbol": "VN",
          "kind": "electrical",
          "unit": "uV",
          "min": null,
          "typ": null,
          "max": 58,
          "conditions": "10Hz≤f≤100KHz, 25℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current Change (Vl -13V to -24V)",
          "symbol": "△Iq",
          "kind": "electrical",
          "unit": "mA",
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          "conditions": "-13V≤Vl≤-24V, 0-125℃",
          "source_page": 1,
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        },
        {
          "name": "Quiescent Current Change (1mA to 40mA)",
          "symbol": "△Iq",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "1mA≤Vl≤40mA, 0-125℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "Iq",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 4.1,
          "max": 6,
          "conditions": "25℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation (Io 1mA-100mA)",
          "symbol": "△Vo",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
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          "conditions": "Io=1mA-40mA, 25℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation (Vl -12V to -24V)",
          "symbol": "△Vo",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 45,
          "max": 175,
          "conditions": "-12V≤Vl≤-24V, 25℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation (Vl -13V to -24V)",
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          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 40,
          "max": 125,
          "conditions": "-13V≤Vl≤-24V, 25℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum Continuous Total Dissipation",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum Output Current",
          "symbol": "IOM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "",
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          "source": "datasheet"
        }
      ]
    }
  },
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    "readme",
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  "discovery_triggers": [
    "79l09u"
  ],
  "discovery_pitch": "79L09U (CBI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "79l09u.lbr",
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    "viewers/symbol.html",
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    "79l09u-hero.overlay.json",
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  "visibility": {
    "public": true
  }
}