SIT2596S-12

{
  "schema_version": 1,
  "type": "component",
  "slug": "sit2596s-12",
  "title": "SIT2596S-12",
  "brief": "SIT DC-DC Converters, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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  "component": {
    "mpn": "SIT2596S-12",
    "manufacturer": "SIT",
    "package": "TO-263-5",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8d6e01ae2bb3d987b50470240087ac98.pdf",
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
        "pn": null,
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    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "DC voltage input, maximum 40V and minimum 4.5V."
      },
      {
        "number": "2",
        "name": "Output",
        "type": "output",
        "description": "Switching tube emitter open output connected to the inductor and free-wheeling diode to form a step-down circuit, with output from 1.2V up to 37V."
      },
      {
        "number": "3",
        "name": "Ground",
        "type": "power_in",
        "description": "Ground connection."
      },
      {
        "number": "4",
        "name": "Feed Back",
        "type": "input",
        "description": "Stabilized sample voltage input, normally connected to the output voltage and compared with the internal 1.23V reference to regulate the duty ratio."
      },
      {
        "number": "5",
        "name": "ON/OFF",
        "type": "input",
        "description": "Enable control: above 1.3V (maximum 25V) the switch turns off, output is 0V and input current is 100μA; below 1.3V output is rated; can be tied to GND or left open if shutdown is not needed."
      },
      {
        "number": "6",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet pin figure shows a metal tab labeled GND for the package, but no separate pin number i"
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        "pages_sent": 4,
        "cost_usd": 0.0353,
        "at": "2026-10-22T21:29:33"
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        "pages": 30,
        "sha256": "19aef5d637633418",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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  "metadata": {
    "specs": {
      "Manufacturer": "SIT",
      "Package": "TO-263-5",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
    },
    "appearance": {
      "contacts": {
        "quote": "close to the IC, at the same time, the capacitor pin should be short, the connected copper wire should be",
        "page": 9,
        "doc": "ds.pdf",
        "material": "copper"
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      "version": 1,
      "datasheet_sha256": "19aef5d63763341853da829fc65ef174939a94e356f71afc13ab06b13a7d5935"
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    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
        {
          "name": "Output voltage",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 11.64,
          "typ": 12,
          "max": 12.36,
          "conditions": "SIT2596-12; 15V ≤ VIN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Efficiency",
          "symbol": "η",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 90,
          "max": null,
          "conditions": "SIT2596-12; VIN = 25V, ILOAD = 3A",
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        },
        {
          "name": "Oscillator frequency",
          "symbol": "fO",
          "kind": "electrical",
          "unit": "kHz",
          "min": 127,
          "typ": 150,
          "max": 173,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Saturation voltage",
          "symbol": "VSAT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.26,
          "max": 1.4,
          "conditions": "IOUT = 3A (Note 1,2)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Max duty cycle (ON)",
          "symbol": "DC",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "(Note 2)",
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        },
        {
          "name": "Min duty cycle (OFF)",
          "symbol": "DC",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0,
          "max": null,
          "conditions": "(Note 3)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Current limit",
          "symbol": "ICL",
          "kind": "electrical",
          "unit": "A",
          "min": 3.4,
          "typ": 4.5,
          "max": 6,
          "conditions": "Peak current (Note 1,2)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current",
          "symbol": "IL",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "Output =0V (Note 1, 3)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current",
          "symbol": "IL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1,
          "max": 10,
          "conditions": "Output = -1V, VIN = 40V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 5,
          "max": 10,
          "conditions": "(Note 3)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Standby quiescent current",
          "symbol": "ISTBY",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 100,
          "max": 200,
          "conditions": "ON/OFF pin = 5V (OFF), VIN = 40V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF pin logic threshold voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.3,
          "max": null,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF threshold, regulator ON",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "Low (regulator ON)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF threshold, regulator OFF",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "High (regulator OFF)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF pin input current",
          "symbol": "IH",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 5,
          "max": 15,
          "conditions": "VLOGIC = 2.5V (regulator OFF)",
          "source_page": 7,
          "source": "datasheet"
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        {
          "name": "ON/OFF pin input current",
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          "unit": "μA",
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          "max": 5,
          "conditions": "VLOGIC = 0.5V (regulator ON)",
          "source_page": 7,
          "source": "datasheet"
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        {
          "name": "Thermal resistance junction to ambient, TO-263",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "℃/W",
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          "typ": 50,
          "max": null,
          "conditions": "Note 5",
          "source_page": 6,
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        },
        {
          "name": "Thermal resistance junction to ambient, TO-263",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "Note 6",
          "source_page": 6,
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        },
        {
          "name": "Thermal resistance junction to ambient, TO-263",
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          "kind": "thermal",
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          "max": null,
          "conditions": "Note 7",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to package surface (top), TO-263",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "SIT2596S-12 TO263-5",
          "source_page": 29,
          "source": "datasheet"
        }
      ]
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    "email": "[email protected]"
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