main
Ray Set visibility: public fa8d4fb 11h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "bl1084-33cs",
  "title": "BL1084-33CS",
  "brief": "BL(Shanghai Belling) Linear Voltage Regulators (LDO), TO-263-2. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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  "component": {
    "mpn": "BL1084-33CS",
    "manufacturer": "BL(Shanghai Belling)",
    "package": "TO-263-2",
    "pin_count": 3,
    "category": "Power Supply Chip",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/9f08c880bc0647f1ae4cce4a13a81d03.pdf",
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      "model_3d_plain": "bl1084-33cs-etched.glb",
      "model_3d_step": "bl1084-33cs-etched.step",
      "model_3d_step_plain": "bl1084-33cs.step",
      "lbr": "bl1084-33cs.lbr"
    },
    "distributor_links": {
      "lcsc": "C2932501"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T00:13:33Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the fixed 3.3V regulator, with the operating junction temperature limited to -20C to 125C."
      },
      {
        "number": "2",
        "name": "Vout",
        "type": "power_out",
        "description": "Regulated 3.3V output, rated for a maximum output current of 5A."
      },
      {
        "number": "3",
        "name": "Vin",
        "type": "power_in",
        "description": "Input supply pin, with a maximum input voltage of 15V per the absolute maximum ratings."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet gives one generic pin table for the fixed version (pins 1 GND, 2 Vout, 3 Vin) and does"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0094,
        "at": "2026-10-27T00:13:01"
      },
      "datasheet": {
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        "pages": 13,
        "sha256": "bb5efe271c8036b3",
        "source_tier": "lcsc"
      },
      "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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    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          10,
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "804a3f76e4182a02567b2429bdc9a585b857158fb8543fccd29c8eb6780e1310",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bl1084-33cs-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "sha256": "7b0c3d59bcf466136daf03bcfd06f189466749923d67cccd685258e9857b12df",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL(Shanghai Belling)",
      "Package": "TO-263-2",
      "Category": "Power Supply Chip",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "bb5efe271c8036b32bdbf6d6de3f00d0a0ddf4d2086164f680b7f5427d833f48",
      "rows": [
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          "kind": "electrical",
          "unit": "V",
          "min": 1.225,
          "typ": 1.25,
          "max": 1.275,
          "conditions": "10mA≤Iout≤5A ,1.5V≤Vin-Vout≤5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage BL1084-3.3V",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "V",
          "min": 3.25,
          "typ": 3.3,
          "max": 3.35,
          "conditions": "Iout=0mA,Vin=6.3V,Tj=25℃",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage BL1084-3.3V",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "V",
          "min": 3.234,
          "typ": 3.3,
          "max": 3.366,
          "conditions": "10mA ≤Iout≤5A ,4.9V≤Vin≤8V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation BL1084-3.3V",
          "symbol": "ΔVout",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 40,
          "conditions": "Iout=10mA, 4.9V≤Vin≤10V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation BL1084-3.3V",
          "symbol": "ΔVout",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 16,
          "max": 50,
          "conditions": "Vin-Vout=1.6V, 0≤Iout≤5A",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "Vin-Vout",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.4,
          "max": 1.6,
          "conditions": "ΔVout, ΔVref =1%,Iout=5A",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Current Limit",
          "symbol": "Ilimit",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 7,
          "max": null,
          "conditions": "Vin-Vout=3V, Tj=25℃",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "Iq",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 5,
          "max": 10,
          "conditions": "Vin=10V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Ripple Rejection",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 65,
          "max": null,
          "conditions": "F=120Hz,Cout=25uF( tan), Iout=5A,Vin-Vout=3V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Temperature Stability",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "Iout=10mA, Vin-Vout=1.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction to Case TO-263",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "℃ / W",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "junction to case, TO-263",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Over Temperature Protection",
          "symbol": "OTP",
          "kind": "thermal",
          "unit": "℃",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Max Input Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
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        },
        {
          "name": "Ambient Temperature",
          "symbol": "Ta",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": -85,
          "conditions": "as printed -40C –85C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "Ts",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": -150,
          "conditions": "as printed -40C -150C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10S",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance TO-263",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "℃ / W",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "Package thermal resistance, TO-263",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage Range",
          "symbol": "Vin",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "Max.15V",
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          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "Tj",
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          "unit": "℃",
          "min": -20,
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          "conditions": "",
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        }
      ]
    }
  },
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  "discovery_triggers": [
    "bl1084-33cs"
  ],
  "discovery_pitch": "BL1084-33CS (BL(Shanghai Belling)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  "visibility": {
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}