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Ray Set visibility: public 14939f7 16d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "ht7544",
  "title": "HT7544",
  "brief": "QNHCHIP 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": [
    "component",
    "power management (pmic)",
    "ht7544",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "HT7544",
    "manufacturer": "QNHCHIP",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/7d6d55630ac1d422d7bb6c8caa71e596.pdf",
    "parts": {
      "symbol": "ht7544.kicad_sym",
      "footprint": "ht7544.kicad_mod",
      "model_3d": "ht7544-hero.glb",
      "model_3d_plain": "ht7544-etched.glb",
      "model_3d_step": "ht7544-etched.step",
      "model_3d_step_plain": "ht7544.step",
      "lbr": "ht7544.lbr"
    },
    "distributor_links": {
      "lcsc": "C47020951"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T17:09:27Z",
      "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 for the regulator; connect the input and output capacitors close to the GND, VIN and VOUT pins."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated 4.4V output (HT7544) with at least 2.2µF output capacitor to ground required, 100mA min output current at VIN=VOUT+2.0V."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input, withstands up to 24V (absolute maximum -0.3 to +24V)."
      }
    ],
    "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 pinout table on page 3 lists pins 1-5 across all variants and does not explicitly tie pins 1-3 t; The output-current figure of 100 mA min is the HT7544 value from the 7544 DC table (page 9). The 4.5"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0478,
        "at": "2026-10-17T17:07:04"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/7d6d55630ac1d422d7bb6c8caa71e596.pdf",
        "pages": 13,
        "sha256": "78e25abc675b4c05",
        "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": "ht7544.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ht7544-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "5494bdca71073dd7dd6b75bd9d16eb91d295441d1e7505577fa987fa5f596a0d",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "QNHCHIP",
      "Package": "SOT-23",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "78e25abc675b4c05915857c48db8209c488ec29e14e8409ec7a363fb1a5a153e",
      "rows": [
        {
          "name": "Output voltage",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 4.312,
          "typ": 4.5,
          "max": 4.488,
          "conditions": "VIN=VOUT+2.0V,IOUT=10mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": 100,
          "typ": 150,
          "max": null,
          "conditions": "VIN=VOUT+2.0V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "ΔVOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 5,
          "max": 60,
          "conditions": "VIN=VOUT+2.0V,1mA≤IOUT≤70mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "VDIF",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 25,
          "max": 55,
          "conditions": "IOUT=1mA,ΔVOUT=2%",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1.5,
          "max": 3,
          "conditions": "无负载",
          "source_page": 9,
          "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": 9,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 24,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (absolute maximum rating)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 24,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -50,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Temperature coefficient",
          "symbol": "ΔVOUT/(ΔTA*VOUT)",
          "kind": "temperature_coefficient",
          "unit": "ppm/℃",
          "min": null,
          "typ": 0,
          "max": null,
          "conditions": "VIN=VOUT+2.0V,IOUT=10mA,-40℃≤TA≤85℃",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance, junction-to-ambient (SOT23-3)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 500,
          "max": null,
          "conditions": "SOT23-3 package",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation (SOT23-3)",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "SOT23-3 package",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ht7544"
  ],
  "discovery_pitch": "HT7544 (QNHCHIP) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ht7544.kicad_sym",
    "ht7544.kicad_mod",
    "ht7544.glb",
    "ht7544.step",
    "ht7544.lbr",
    "docs/hero.png",
    "docs/ht7544-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ht7544-hero.glb",
    "ht7544-hero.overlay.json",
    "ht7544-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}