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Ray Set visibility: public 35c69ea 17h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "cm1802b33",
  "title": "CM1802B33",
  "brief": "iCM(创芯微) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3. 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": "CM1802B33",
    "manufacturer": "iCM(创芯微)",
    "package": "SOT-23-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603386737649598464",
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      "lbr": "cm1802b33.lbr"
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    "distributor_links": {
      "lcsc": "C22446616"
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    "distributor_check": {
      "checked_at": "2026-11-07T04:31:25Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
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        "status": "no match"
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      "mouser": {
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        "status": "no match"
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    "pins": [
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        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (地) for the regulator; the SOT23-3 variant has no EN pin, so the EN shutdown described in the features does not apply to this package."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output (输出) at the fixed 3.3V for CM1802B33, with a maximum output current of 500mA and ±2% output accuracy."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply (输入); the features list 2.5 to 6V and the electrical table lists 1.8 to 6.5V, with an absolute maximum VIN-to-GND of -0.3 to 6.5V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "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 does not label the SOT23-3 (type B) pin table with its variant name. I assigned the un; Input voltage is stated two ways: 2.5 to 6V in the features list and 1.8 to 6.5V in the electrical t; The features and typical-application text describe an EN pin for shutdown, but the SOT23-3 variant h"
        ],
        "pages_sent": 17,
        "cost_usd": 0.0697,
        "at": "2026-11-07T04:31:16"
      },
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        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603386737649598464",
        "pages": 17,
        "sha256": "d4c1e448602af278",
        "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": [
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        "file": "cm1802b33.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          3,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
        "checked": "2026-11-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "cm1802b33-etched.step",
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        "sha256": "5dcec6879e140f44842aba04c035b68804d77b9f0b51dfde1fd0e70c3cd5fb40",
        "checked": "2026-11-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "iCM(创芯微)",
      "Package": "SOT-23-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "d4c1e448602af278640af2945f058376ba7424309de0eb9d1dce60957abf3529",
      "rows": [
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output voltage accuracy",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "%",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "VIN=5.5V, IOUT=10mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Absolute maximum VIN to GND",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "VIN to GND withstand voltage",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Absolute maximum VOUT to GND",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5,
          "conditions": "VOUT to GND withstand voltage",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Absolute maximum VIN to VOUT",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 0.3,
          "typ": null,
          "max": 5,
          "conditions": "VIN to VOUT withstand voltage",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature",
          "symbol": "Ta",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "工作环境温度",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "存储温度",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "工作结温",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Human body model ESD",
          "symbol": "HBM",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "Human body model",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance, SOT23-3",
          "symbol": "",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 380,
          "max": null,
          "conditions": "热阻SOT23-3",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "IGND",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "VIN=5.5V, no load",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Maximum output current",
          "symbol": "IOUT_MAX",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 500,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "VDROP",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "IOUT=10mA, ΔVOUT=-0.1V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "VDROP",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 110,
          "max": null,
          "conditions": "IOUT=100mA, ΔVOUT=-0.1",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "ΔVOUT",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.2,
          "max": null,
          "conditions": "1mA≤IOUT≤300mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "ΔVOUT/ΔVIN",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": 0.1,
          "max": null,
          "conditions": "IOUT=1mA, VIN=(VOUTNOM+1V) to 6V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Current limit",
          "symbol": "ILIMIT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 500,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Power supply rejection ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 65,
          "max": null,
          "conditions": "f=10kHz, COUT=1uF, IOUT=30mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Overtemperature protection threshold",
          "symbol": "TSHDN",
          "kind": "electrical",
          "unit": "℃",
          "min": null,
          "typ": 155,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Overtemperature recovery threshold",
          "symbol": "TSHDNR",
          "kind": "electrical",
          "unit": "℃",
          "min": null,
          "typ": 135,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input capacitor (external, application)",
          "symbol": "Cin",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 1,
          "typ": 1,
          "max": 10,
          "conditions": "Typical application table, external component",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output capacitor (external, application)",
          "symbol": "Cout",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 1,
          "typ": 10,
          "max": 10,
          "conditions": "Typical application table, external component",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "CM1802B33 (iCM(创芯微)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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