L7912CV-DG

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  "title": "L7912CV-DG",
  "brief": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
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    "mpn": "L7912CV-DG",
    "manufacturer": "STMicroelectronics",
    "package": "TO-220",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.st.com/resource/en/datasheet/l7912cv-dg.pdf",
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    "distributor_links": {
      "digikey": "497-L7912CV-DG-ND",
      "mouser": "511-L7912CV-DG",
      "lcsc": "C3797"
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Common / ground reference. For a negative regulator this is the return that sits above both the negative input (VI) and negative output (VO)."
      },
      {
        "number": "2",
        "name": "IN",
        "type": "power_in",
        "description": "Negative unregulated input supply. Absolute maximum -35 V for VO = -5 to -18 V variants (covers L7912). Requires an input capacitor (CI = 2.2 uF per test circuit) close to the pin for stability."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated -12 V output, sourcing up to 1.5 A with adequate heatsinking. Requires an output capacitor (CO = 1 uF per test circuit) to guarantee transient response and stability."
      }
    ],
    "provenance": {
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        "pages": 24,
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        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    "pin1": {
      "pad": "1",
      "at": [
        0,
        0
      ],
      "corner": "bottom-right",
      "source": "pad-position",
      "derived_from": "TO-220-3_Vertical@sha256:0c6681bb273696ad",
      "mark": "synthesised"
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        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          10.25,
          4.455,
          28.525
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        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
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  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "TO-220",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
        {
          "name": "Output voltage",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": -11.5,
          "typ": -12,
          "max": -12.5,
          "conditions": "TJ = 25°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output voltage",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": -11.4,
          "typ": -12,
          "max": -12.6,
          "conditions": "IO = -5 mA to -1 A, PO ≤ 15 W, VI = -15.5 to -27 V",
          "source_page": 9,
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        },
        {
          "name": "Line regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 240,
          "conditions": "VI = -14.5 to -30 V, TJ = 25°C",
          "source_page": 9,
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          "name": "Line regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "VI = -16 to -22 V, TJ = 25°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 240,
          "conditions": "IO = 5 mA to 1.5 A, TJ = 25°C",
          "source_page": 9,
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        },
        {
          "name": "Load regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "IO = 250 to 750 mA, TJ = 25°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "Id",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "TJ = 25°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current change",
          "symbol": "ΔId",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "IO = 5 mA to 1 A",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current change",
          "symbol": "ΔId",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VI = -15 to -30 V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage rejection",
          "symbol": "SVR",
          "kind": "electrical",
          "unit": "dB",
          "min": 54,
          "typ": 60,
          "max": null,
          "conditions": "ΔVI = 10 V, f = 120Hz",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "DC input voltage",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -35,
          "typ": null,
          "max": null,
          "conditions": "for VO = -5 to -18 V (applies to L7912C, VO = -12 V)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature range",
          "symbol": "TOP",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "Thermal resistance junction-case (TO-220)",
          "symbol": "RthJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "TO-220 column",
          "source_page": 5,
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        },
        {
          "name": "Thermal resistance junction-ambient (TO-220)",
          "symbol": "RthJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "TO-220 column",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output voltage drift",
          "symbol": "ΔVO/ΔT",
          "kind": "temperature_coefficient",
          "unit": "mV/°C",
          "min": null,
          "typ": -0.8,
          "max": null,
          "conditions": "IO = 5 mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output noise voltage",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "µV",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "B = 10Hz to 100kHz, TJ = 25°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.1,
          "max": null,
          "conditions": "IO = 1 A, TJ = 25°C, ΔVO = 100 mV",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Short circuit current",
          "symbol": "Isc",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        }
      ]
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      "mpn": "L7912CV-DG",
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      "mpn": "L7912CP",
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  "updated_at": "2026-09-24T23:40:02.831Z"
}