78L18

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  "type": "component",
  "slug": "78l18",
  "title": "78L18",
  "brief": "Shikues Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "component": {
    "mpn": "78L18",
    "manufacturer": "Shikues",
    "package": "SOT-89-3",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2204181745_Shikues-78L18_C2999139.pdf",
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    "pins": [
      {
        "number": "1",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated +18 V output, up to 150 mA. A 0.1 uF ceramic capacitor to GND improves transient response but is not required for stability."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground reference. Must be shared between input and output. Quiescent current of ~3-5.5 mA flows out of this pin."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated input supply, typically at least VOUT + 2.0 V (dropout), maximum 30 V. Bypass with 0.33 uF close to the pin for stable operation."
      }
    ],
    "provenance": {
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        "pages": 7,
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shikues",
      "Package": "SOT-89-3",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "2f2bf1f5a553c543",
      "rows": [
        {
          "name": "Output voltage tolerance (IO=40mA, VIN=10V), multiple of nominal VOUT",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "VOUT",
          "min": 0.964,
          "typ": null,
          "max": 1.036,
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        },
        {
          "name": "Output voltage tolerance (IO=1mA~40mA, VIN=7V~18V), multiple of nominal VOUT",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "VOUT",
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        {
          "name": "Output voltage tolerance (IO=1mA~10mA, VIN=10V), multiple of nominal VOUT",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "VOUT",
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          "conditions": "IO=1mA~10mA,VIN=10V",
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        },
        {
          "name": "Output voltage accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 1,
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        },
        {
          "name": "Line regulation",
          "symbol": "LNR",
          "kind": "electrical",
          "unit": "mV",
          "min": -150,
          "typ": null,
          "max": 150,
          "conditions": "VIN=7V~18V,IO=20mA",
          "source_page": 2,
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        },
        {
          "name": "Line regulation",
          "symbol": "LNR",
          "kind": "electrical",
          "unit": "mV",
          "min": -100,
          "typ": null,
          "max": 100,
          "conditions": "VIN=8V~18V,IO=20mA",
          "source_page": 2,
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        },
        {
          "name": "Load regulation",
          "symbol": "LDR",
          "kind": "electrical",
          "unit": "mV",
          "min": -100,
          "typ": null,
          "max": 100,
          "conditions": "VIN=10V,IO=1mA~100mA",
          "source_page": 2,
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        },
        {
          "name": "Load regulation",
          "symbol": "LDR",
          "kind": "electrical",
          "unit": "mV",
          "min": -30,
          "typ": null,
          "max": 30,
          "conditions": "VIN=10V,IO=1mA~40mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current change",
          "symbol": "ΔIq",
          "kind": "electrical",
          "unit": "mA",
          "min": -1.5,
          "typ": null,
          "max": 1.5,
          "conditions": "VIN=8V~18V,IO=20mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current change",
          "symbol": "ΔIq",
          "kind": "electrical",
          "unit": "mA",
          "min": -0.1,
          "typ": null,
          "max": 0.1,
          "conditions": "VIN=10V,IO=1mA~40mA",
          "source_page": 2,
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        },
        {
          "name": "Dropout voltage",
          "symbol": "VDIF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "TA=25℃,IO=100mA",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Quiescent current",
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          "kind": "electrical",
          "unit": "mA",
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          "max": 5.5,
          "conditions": "VIN=10V,IO=40mA",
          "source_page": 2,
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        },
        {
          "name": "Output noise voltage",
          "symbol": "VN",
          "kind": "electrical",
          "unit": "uV/VO",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "F=10Hz~100KHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Ripple rejection",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 80,
          "max": null,
          "conditions": "TA=25℃,f=120Hz,IO=40mA,VIN=8V~20V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Nominal output voltage (78L18)",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 18,
          "max": null,
          "conditions": "",
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        },
        {
          "name": "Input voltage",
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          "unit": "V",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 1,
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        },
        {
          "name": "Maximum output current",
          "symbol": "IOUT",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
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        },
        {
          "name": "Maximum power dissipation, SOT-89",
          "symbol": "Pmax",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "SOT-89 package",
          "source_page": 1,
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        },
        {
          "name": "Junction temperature",
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          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
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        },
        {
          "name": "Operating temperature",
          "symbol": "Topr",
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          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
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        {
          "name": "Storage temperature range",
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          "name": "Soldering temperature",
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          "conditions": "Recommended 10 s",
          "source_page": 2,
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        {
          "name": "ESD rating (HBM)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
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          "conditions": "HBM",
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        },
        {
          "name": "Input-output differential (typical)",
          "symbol": "VIN-VOUT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "",
          "source_page": 4,
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    "email": "[email protected]"
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  "updated_at": "2026-09-24T15:22:39.958Z"
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