LD1117S33CTR

{
  "schema_version": 1,
  "type": "component",
  "slug": "ld1117s33ctr",
  "title": "LD1117S33CTR",
  "brief": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-4. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "pmic",
    "ld1117s33ctr"
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  "component": {
    "mpn": "LD1117S33CTR",
    "manufacturer": "STMicroelectronics",
    "package": "SOT-223-4",
    "pin_count": 4,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.st.com/resource/en/datasheet/ld1117s33ctr.pdf",
    "parts": {
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    "distributor_links": {
      "digikey": "497-1241-2-ND",
      "mouser": "511-LD1117S33C",
      "lcsc": "C35879"
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground / common reference. Also carries the internal adjust/reference return current."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated 3.3 V output, up to 800 mA. Requires a minimum 10 µF capacitor to ground for stability. The exposed SOT-223 tab is internally connected to this pin."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated input supply. Absolute max 15 V DC (18 V when IOUT < 20 mA). A 100 nF input capacitor is recommended near the pin."
      },
      {
        "number": "4",
        "name": "TAB",
        "type": "passive",
        "description": "SOT-223 heat-sink tab, internally tied to VOUT. Solder to a copper pour for thermal dissipation; the pour is at VOUT potential."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/ld1117s33ctr.pdf",
        "pages": 44,
        "sha256": "1b80923ec6ca9161",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -3.15,
        -2.3
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-223@sha256:49f22605ecc1fc70",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "ld1117s33ctr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7,
          6.5,
          1.7
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "extents_mm": [
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          6.5,
          1.7
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "940f68e0d33f673c47a435901359481189255a5138e0d8bd3f6e3e5233d73137",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SOT-223-4",
      "Category": "PMIC",
      "Pins": "4"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "1b80923ec6ca9161",
      "rows": [
        {
          "name": "Output voltage (VIN=5.3 V, IO=10 mA, TJ=25 °C)",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 3.24,
          "typ": 3.3,
          "max": 3.36,
          "conditions": "Vin = 5.3 V, IO = 10 mA, TJ = 25 °C",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (full load and line range)",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 3.16,
          "typ": null,
          "max": 3.44,
          "conditions": "IO = 0 to 800 mA, Vin = 4.75 to 10 V",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 1,
          "max": 30,
          "conditions": "Vin = 4.75 to 15 V, IO = 0 mA",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 1,
          "max": 30,
          "conditions": "Vin = 4.75 V, IO = 0 to 800 mA",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Operating input voltage",
          "symbol": "Vin",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "IO = 100 mA",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "Id",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 5,
          "max": 10,
          "conditions": "Vin ≤ 15 V",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IO",
          "kind": "electrical",
          "unit": "mA",
          "min": 800,
          "typ": 950,
          "max": 1300,
          "conditions": "Vin = 8.3 V, TJ = 25 °C",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage rejection",
          "symbol": "SVR",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 75,
          "max": null,
          "conditions": "IO = 40 mA, f = 120 Hz, TJ = 25 °C, Vin = 6.3 V, Vripple = 1 VPP",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1,
          "max": 1.1,
          "conditions": "IO = 100 mA, TJ = 0 to 125 °C",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.05,
          "max": 1.15,
          "conditions": "IO = 500 mA, TJ = 0 to 125 °C",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.1,
          "max": 1.2,
          "conditions": "IO = 800 mA, TJ = 0 to 125 °C",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.1,
          "conditions": "IO = 100 mA",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "IO = 500 mA",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.3,
          "conditions": "IO = 800 mA",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Temperature stability",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Long term stability",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "1000 hrs, TJ = 125 °C",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "Thermal regulation",
          "symbol": "",
          "kind": "thermal",
          "unit": "%/W",
          "min": null,
          "typ": 0.01,
          "max": 0.1,
          "conditions": "Ta = 25 °C, 30 ms Pulse",
          "source_page": 18,
          "source": "datasheet"
        },
        {
          "name": "DC input voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "DC input voltage (footnote 1)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 18,
          "conditions": "IOUT lower than 20 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PTOT",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 12,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature range (C version)",
          "symbol": "TOP",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "for C version",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-case (SOT-223)",
          "symbol": "RthJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "SOT-223",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-ambient (SOT-223)",
          "symbol": "RthJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 110,
          "max": null,
          "conditions": "SOT-223",
          "source_page": 7,
          "source": "datasheet"
        }
      ]
    }
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  "variants": [
    {
      "mpn": "LD1117S33CTR",
      "kind": "packaging"
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    {
      "mpn": "LD1117S33CTRV33",
      "kind": "packaging"
    },
    {
      "mpn": "LD1117S33CTRV33C",
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    {
      "mpn": "LD1117S33CTRDT33",
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    {
      "mpn": "LD1117S33CTRDT33TR",
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  "updated_at": "2026-09-24T23:48:33.658Z"
}