BL1084-CS

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl1084-cs",
  "title": "BL1084-CS",
  "brief": "BL(Shanghai Belling) Linear Voltage Regulators (LDO), TO-263-2L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power supply chip",
    "bl1084-cs",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BL1084-CS",
    "manufacturer": "BL(Shanghai Belling)",
    "package": "TO-263-2L",
    "pin_count": 3,
    "category": "Power Supply Chip",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3e7fcbabcd4da8a4433ce87a3beefc5f.pdf",
    "parts": {
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      "lbr": "bl1084-cs.lbr"
    },
    "distributor_links": {
      "lcsc": "C5185881"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T18:26:26Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 871 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Adj.",
        "type": "input",
        "description": "Adjustable-version adjust pin: the output is set with two external resistors (Vout = VRef×(1+R2/R1)+IAdj×R2), VRef is 1.25V (1.225V to 1.275V), and IAdj is 45µA typ and 120µA max."
      },
      {
        "number": "2",
        "name": "Vout",
        "type": "power_out",
        "description": "Regulated output: up to 5A, with 1.4V typ and 1.6V max dropout at 5A, 7A typ current limit, and a recommended 22µF tantalum output capacitor to GND."
      },
      {
        "number": "3",
        "name": "Vin",
        "type": "power_in",
        "description": "Input supply, 15V maximum, with a recommended 10µF tantalum capacitor to GND."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: MPN BL1084-CS has no output-voltage code, so the datasheet's ordering table makes it the adjustable ; The TO-263-2L drawing on page 2 shows three labeled positions (1, 2, 3), and the middle lead (pin 2)",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 13,
        "cost_usd": 0.1577,
        "at": "2026-10-23T18:26:13"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/3e7fcbabcd4da8a4433ce87a3beefc5f.pdf",
        "pages": 13,
        "sha256": "79bcc77d55e58efc",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bl1084-cs.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          15,
          10,
          4.42
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "804a3f76e4182a02567b2429bdc9a585b857158fb8543fccd29c8eb6780e1310",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bl1084-cs-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          15,
          10,
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "a73d406ef6b1837341fb9bd9ae94d67b215151bf5e57080e03eb7f266c825a89",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL(Shanghai Belling)",
      "Package": "TO-263-2L",
      "Category": "Power Supply Chip",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "79bcc77d55e58efcd3e051f2ee17f4b2cdd03dfc6004cf6e0f77f18c32a2534e",
      "rows": [
        {
          "name": "Reference Voltage",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "V",
          "min": 1.225,
          "typ": 1.25,
          "max": 1.275,
          "conditions": "10mA≤Iout≤5A ,1.5V≤Vin-Vout≤5V; Tj=25℃",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation (ADJ)",
          "symbol": "ΔVout",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 40,
          "conditions": "Iout=10mA, 2.85V≤Vin≤10V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation (ADJ)",
          "symbol": "ΔVout",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 16,
          "max": 50,
          "conditions": "ADJ connected to ground, Vin-Vout=1.6V, 10mA≤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": "Minimum Load Current (ADJ)",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3,
          "max": 10,
          "conditions": "BL1084-ADJ",
          "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": "Adjust Pin Current",
          "symbol": "IAdj",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 45,
          "max": 120,
          "conditions": "2.85V ≤Vin≤4.25V, 10mA≤ Iout≤5A",
          "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": "Adjust Pin Current Change",
          "symbol": "Ichange",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.4,
          "max": 10,
          "conditions": "10mA≤Iout≤5A, 1.5V≤Vin-Vout ≤6V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Input Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature (abs max)",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Ambient Temperature",
          "symbol": "Ta",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "Ts",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "printed '-40C -150C'",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10S",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage Range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "Max.15V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "Tj",
          "kind": "recommended_operating",
          "unit": "C",
          "min": -10,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction to Case TO-263",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "℃ / W",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "TO-263",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Package Thermal Resistance TO-263",
          "symbol": "",
          "kind": "thermal",
          "unit": "℃ / W",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "TO-263",
          "source_page": 2,
          "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": "Temperature Stability",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "%",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "Iout=10mA, Vin-Vout=1.5V",
          "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"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "BL1084-CS (BL(Shanghai Belling)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}