HT33

{
  "schema_version": 1,
  "type": "component",
  "slug": "ht33",
  "title": "HT33",
  "brief": "XCH(旭昌辉) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. 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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    "power management (pmic)",
    "ht33",
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  "component": {
    "mpn": "HT33",
    "manufacturer": "XCH(旭昌辉)",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602845385580683264",
    "parts": {
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      "footprint": "ht33.kicad_mod",
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      "model_3d_plain": "ht33-etched.glb",
      "model_3d_step": "ht33-etched.step",
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      "lbr": "ht33.lbr"
    },
    "distributor_links": {
      "lcsc": "C19712023"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T17:09:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the regulator; the datasheet's pin function table lists it as ground (地)."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output; the datasheet requires an output-to-ground capacitor greater than 2.2 µF, with tantalum recommended, and the output is held at the set voltage (2.8 V to 9.0 V range across the series, 3.3 V for HT33)."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin; the absolute maximum VIN is -0.3 V to +26 V and the stated input voltage limit is 24 V, and capacitors should be placed close to the VIN and VOUT pins."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet has two package drawings (SOT23 and SOT23-3L). The pin-function table on page 2 is lab; The VOUT stated range 2.8 V to 9.0 V and the HT33 nominal 3.3 V come from the model table and electr"
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        "at": "2026-10-17T17:07:00"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-17",
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        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "XCH(旭昌辉)",
      "Package": "SOT-23",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "b1c696830fe50759aa34f33d3064eebad7bb565d6b4206f2df0ee41323348cf5",
      "rows": [
        {
          "name": "Output voltage",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "V",
          "min": 3.234,
          "typ": 3.3,
          "max": 3.366,
          "conditions": "VIN=VOUT+2.0V, IOUT=10mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": 70,
          "typ": 100,
          "max": null,
          "conditions": "VIN=VOUT+2.0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1.5,
          "max": 3,
          "conditions": "No load",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "VDIF",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 25,
          "max": 55,
          "conditions": "IOUT=1mA, ΔVOUT=2%",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "ΔVOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 25,
          "max": 60,
          "conditions": "VIN=VOUT+2.0V, 1mA≤IOUT≤50mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "ΔVOUT/VOUT*ΔVIN",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "VOUT+1.0V≤VIN≤24V, IOUT=1mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 24,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (absolute maximum)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 26,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -50,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output voltage temperature coefficient",
          "symbol": "ΔVOUT/ΔTA*VOUT",
          "kind": "temperature_coefficient",
          "unit": "ppm/℃",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "VIN=VOUT+2.0V, IOUT=10mA, -40℃≤TA≤85℃",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
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  "discovery_triggers": [
    "ht33"
  ],
  "discovery_pitch": "HT33 (XCH(旭昌辉)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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