LD1117S12CTR

{
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  "type": "component",
  "slug": "ld1117s12ctr",
  "title": "LD1117S12CTR",
  "brief": "STMicroelectronics Dropout Regulators(LDO), SOT-223. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management ics",
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  "component": {
    "mpn": "LD1117S12CTR",
    "manufacturer": "STMicroelectronics",
    "package": "SOT-223",
    "pin_count": 4,
    "category": "Power Management ICs",
    "subcategory": "Dropout Regulators(LDO)",
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    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / common return for the regulator. Reference for both VIN and VOUT."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated 1.2 V fixed output (±1% at 25 °C), up to 800 mA. Requires a minimum 10 µF output capacitor for loop stability. Electrically common with the tab."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated input supply. Must be at least VOUT + Vdropout (~1 V typ.) above VOUT. Absolute maximum 15 V."
      },
      {
        "number": "TAB",
        "name": "VOUT",
        "type": "power_out",
        "description": "Thermal tab, electrically connected to VOUT. Used both for heat dissipation and as the regulated output node."
      }
    ],
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        "pages": 44,
        "sha256": "1b80923ec6ca9161",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          6.5,
          1.7
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-07",
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        "checked": "2026-10-16",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SOT-223",
      "Category": "Power Management ICs",
      "Pins": "4"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "1b80923ec6ca9161",
      "rows": [
        {
          "name": "Output voltage",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 1.176,
          "typ": 1.2,
          "max": 1.224,
          "conditions": "Vin - VO = 2 V, IO = 10 mA, TJ = 25 °C",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Output voltage",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 1.12,
          "typ": 1.2,
          "max": 1.28,
          "conditions": "IO = 10 to 800 mA, Vin - VO = 1.4 to 10 V",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "Vin - VO = 1.5 to 13.75 V, IO = 10 mA",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "Vin - VO = 3 V, IO = 10 to 800 mA",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Temperature stability",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "",
          "source_page": 15,
          "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": 15,
          "source": "datasheet"
        },
        {
          "name": "Operating input voltage",
          "symbol": "Vin",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Adjustment pin current",
          "symbol": "Iadj",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 60,
          "max": 120,
          "conditions": "Vin ≤ 15 V",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Adjustment pin current change",
          "symbol": "ΔIadj",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": 5,
          "conditions": "Vin - VO = 1.4 to 10 V, IO = 10 to 800 mA",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Minimum load current",
          "symbol": "IO(min)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2,
          "max": 5,
          "conditions": "Vin = 15 V",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IO",
          "kind": "electrical",
          "unit": "mA",
          "min": 800,
          "typ": 950,
          "max": 1300,
          "conditions": "Vin - VO = 5 V, TJ = 25 °C",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Output noise (%VO)",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0.003,
          "conditions": "B = 10 Hz to 10 kHz, TJ = 25 °C",
          "source_page": 15,
          "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 - VO = 3 V, Vripple = 1 VPP",
          "source_page": 15,
          "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": 15,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.05,
          "max": 1.2,
          "conditions": "IO = 500 mA, TJ = 0 to 125 °C",
          "source_page": 15,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.1,
          "max": 1.3,
          "conditions": "IO = 800 mA, TJ = 0 to 125 °C",
          "source_page": 15,
          "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": "DC input voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "",
          "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": "Thermal resistance junction-case",
          "symbol": "RthJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "SOT-223 package",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-ambient",
          "symbol": "RthJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 110,
          "max": null,
          "conditions": "SOT-223 package",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%/W",
          "min": null,
          "typ": 0.01,
          "max": 0.1,
          "conditions": "Ta = 25 °C, 30 ms Pulse",
          "source_page": 15,
          "source": "datasheet"
        }
      ]
    }
  },
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      "mpn": "LD1117S12CTR",
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    {
      "mpn": "LD1117S12CTRV12",
      "kind": "packaging"
    },
    {
      "mpn": "LD1117S12CTRDT12",
      "kind": "packaging"
    },
    {
      "mpn": "LD1117S12CTRD12",
      "kind": "packaging"
    }
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  "updated_at": "2026-09-24T23:48:01.365Z"
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