LM79L12

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  "slug": "lm79l12",
  "title": "LM79L12",
  "brief": "HTC Korea TAEJIN Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "manufacturer": "HTC Korea TAEJIN Tech",
    "package": "TO-92-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
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      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 547 calls left today"
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      "mouser": {
        "pn": null,
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    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (common) reference pin for the negative regulator, per the datasheet pin description table."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Negative input voltage pin; for the LM79L12 the recommended input range is -14.5 V to -27 V and the absolute maximum input voltage is -35 V."
      },
      {
        "number": "3",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated negative output voltage pin (nominal -12 V for LM79L12), with output current up to 100 mA."
      }
    ],
    "provenance": {
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pinout is taken from the text pin table on page 4 (TO-92 / SOT-89 3-lead). The pin diagram on th; Pin descriptions for GND and VIN are limited to the datasheet's own function labels plus the LM79L12"
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        "at": "2026-10-09T21:54:16"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
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        "described": 3,
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        "refuses_to_fabricate": true
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        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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          3.745,
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        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "HTC Korea TAEJIN Tech",
      "Package": "TO-92-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
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      "rows": [
        {
          "name": "Input Voltage (absolute maximum), LM79L12 to LM79L18",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -35,
          "conditions": "LM79L12 ~ LM79L18",
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          "source": "datasheet"
        },
        {
          "name": "Maximum Power Dissipation",
          "symbol": "PDMax",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.77,
          "conditions": "TA = 25°C, TO-92",
          "source_page": 1,
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        },
        {
          "name": "Lead Temperature (Soldering, 10 sec)",
          "symbol": "TSOL",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10 sec soldering",
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        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Operating Junction Temperature Range",
          "symbol": "TJOPR",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": 0,
          "typ": null,
          "max": 150,
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        },
        {
          "name": "Thermal Resistance Junction-To-Ambient",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": null,
          "max": 162,
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        },
        {
          "name": "Input Voltage (recommended)",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -14.5,
          "typ": null,
          "max": -27,
          "conditions": "LM79L12",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Current",
          "symbol": "Io",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Virtual Junction Temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": 0,
          "typ": null,
          "max": 125,
          "conditions": "",
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        },
        {
          "name": "Output Voltage",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": -11.5,
          "typ": -12,
          "max": -12.5,
          "conditions": "25℃, 1mA ≤ Io ≤ 40mA, -14.5V ≤ VIN ≤ -27V",
          "source_page": 7,
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        },
        {
          "name": "Output Voltage",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": -11.4,
          "typ": -12,
          "max": -12.6,
          "conditions": "0℃ ~ 125℃, 1mA ≤ Io ≤ 70mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "ΔVLINE",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 50,
          "max": 250,
          "conditions": "-14.5V ≤ VIN ≤ -27V, 25℃",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "ΔVLINE",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 40,
          "max": 200,
          "conditions": "-16V ≤ VIN ≤ -27V, 25℃",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "ΔVLOAD",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 24,
          "max": 100,
          "conditions": "1mA ≤ Io ≤ 100mA",
          "source_page": 7,
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        },
        {
          "name": "Load Regulation",
          "symbol": "ΔVLOAD",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 15,
          "max": 50,
          "conditions": "1mA ≤ Io ≤ 40mA, 25℃",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Bias Current",
          "symbol": "IB",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 6.5,
          "conditions": "25℃",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Bias Current",
          "symbol": "IB",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "125℃",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Bias Current Change",
          "symbol": "ΔIB",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "-16V ≤ VIN ≤ -27V",
          "source_page": 7,
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        {
          "name": "Bias Current Change",
          "symbol": "ΔIB",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "1mA ≤ Io ≤ 40mA, 0℃ ~ 125℃",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Ripple Rejection",
          "symbol": "RR",
          "kind": "electrical",
          "unit": "dB",
          "min": 37,
          "typ": 42,
          "max": null,
          "conditions": "-15V ≤ VIN ≤ -25V, f=120Hz, 25℃",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output Noise Voltage",
          "symbol": "VN",
          "kind": "electrical",
          "unit": "uV",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "10Hz ≤ f ≤ 100kHz, 25℃",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "VD",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.7,
          "conditions": "25℃",
          "source_page": 7,
          "source": "datasheet"
        }
      ]
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