HT2576S-ADJ

{
  "schema_version": 1,
  "type": "component",
  "slug": "ht2576s-adj",
  "title": "HT2576S-ADJ",
  "brief": "HTCSEMI AC-DC Controllers & Regulators, TO-263-5. 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 ics",
    "ht2576s-adj",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "HT2576S-ADJ",
    "manufacturer": "HTCSEMI",
    "package": "TO-263-5",
    "pin_count": 6,
    "category": "Power Management ICs",
    "subcategory": "AC-DC Controllers & Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/27455939a22269f2e229f685f4a9ecac.pdf",
    "parts": {
      "symbol": "ht2576s-adj.kicad_sym",
      "footprint": "ht2576s-adj.kicad_mod",
      "model_3d": "ht2576s-adj-hero.glb",
      "model_3d_plain": "ht2576s-adj-etched.glb",
      "model_3d_step": "ht2576s-adj-etched.step",
      "model_3d_step_plain": "ht2576s-adj.step",
      "lbr": "ht2576s-adj.lbr"
    },
    "distributor_links": {
      "lcsc": "C2834475"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T23:18:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 532 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Vin",
        "type": "power_in",
        "description": "Supply input voltage pin; maximum supply voltage 45 V absolute maximum, 40 V operating."
      },
      {
        "number": "2",
        "name": "Output",
        "type": "output",
        "description": "Switch output pin sourcing current to the inductor; steady-state output voltage to ground must not go below -1.0 V."
      },
      {
        "number": "3",
        "name": "Ground",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "4",
        "name": "Feedback",
        "type": "input",
        "description": "Feedback sense input; regulated to 1.23 V (Vref) on the adjustable version, with feedback bias current of 100 nA typical max at 25 C."
      },
      {
        "number": "5",
        "name": "ON/OFF",
        "type": "input",
        "description": "TTL-compatible shutdown input; high (about 5 V) turns the regulator off into standby, input range -0.3 V to +Vin."
      },
      {
        "number": "6",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin names come from the page 1 pin connection list. Pin types are inferred from the function names. ; The datasheet does not say whether the TO-263-5L tab is connected to ground. No tab pin was added.",
          "1/6 pin names appear NOWHERE in the datasheet text: ['3:Ground@p1']"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0696,
        "at": "2026-10-22T23:18:03"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/27455939a22269f2e229f685f4a9ecac.pdf",
        "pages": 11,
        "sha256": "5f988aa94798a70c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ht2576s-adj.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": "94c2a3dc1aaad85b6b5193f97d9a7c61b4e28bac25952a1e629557bcf747e246",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ht2576s-adj-etched.step",
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      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HTCSEMI",
      "Package": "TO-263-5",
      "Category": "Power Management ICs",
      "Pins": "6"
    },
    "characteristics": {
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      "source": "datasheet",
      "datasheet_sha256": "5f988aa94798a70cf016edf8a87fbf05f53223c8cd0e407c3836597de032b3ff",
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          "symbol": "Vout",
          "kind": "electrical",
          "unit": "V",
          "min": 1.217,
          "typ": null,
          "max": 1.243,
          "conditions": "Vin = 12 V, ILoad = 0.5 A, Vout = 5.0 V, TJ = 25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Feedback Voltage",
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        {
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          "min": 1.18,
          "typ": null,
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          "conditions": "8.0 V ≤ Vin ≤ 40 V, 0.5 A ≤ ILoad ≤ 3.0 A, Vout = 5.0 V, TJ = –40 to +125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Efficiency",
          "symbol": "η",
          "kind": "electrical",
          "unit": "%",
          "min": 67,
          "typ": null,
          "max": null,
          "conditions": "Vin = 12 V, ILoad = 3.0 A, Vout = 5.0 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Feedback Bias Current",
          "symbol": "Ib",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "Vout = 5.0 V, TJ = 25°C",
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        {
          "name": "Feedback Bias Current",
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          "max": 500,
          "conditions": "Vout = 5.0 V, TJ = –40 to +125°C",
          "source_page": 4,
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        },
        {
          "name": "Oscillator Frequency",
          "symbol": "fosc",
          "kind": "electrical",
          "unit": "kHz",
          "min": 42,
          "typ": null,
          "max": 63,
          "conditions": "TJ = –40 to +125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Saturation Voltage",
          "symbol": "Vsat",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.8,
          "conditions": "Iout = 3.0 A, TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Saturation Voltage",
          "symbol": "Vsat",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "Iout = 3.0 A, TJ = –40 to +125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Max Duty Cycle (on)",
          "symbol": "DC",
          "kind": "electrical",
          "unit": "%",
          "min": 93,
          "typ": null,
          "max": null,
          "conditions": "Feedback removed from output and connected to 0 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Current Limit (Peak Current)",
          "symbol": "ICL",
          "kind": "electrical",
          "unit": "A",
          "min": 4.2,
          "typ": null,
          "max": 6.9,
          "conditions": "TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Current Limit (Peak Current)",
          "symbol": "ICL",
          "kind": "electrical",
          "unit": "A",
          "min": 3.5,
          "typ": null,
          "max": 7.5,
          "conditions": "TJ = –40 to +125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Leakage Current",
          "symbol": "IL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "Output = 0 V, TJ = 25°C, Vin = 40 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Leakage Current",
          "symbol": "IL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "Output = –1.0 V, TJ = 25°C, Vin = 40 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 11,
          "conditions": "TJ = –40 to +125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Standby Quiescent Current",
          "symbol": "Istby",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "ON/OFF Pin = 5.0 V (off), TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF Pin Logic Input Level High",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.2,
          "typ": null,
          "max": null,
          "conditions": "Vout = 0 V, TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF Pin Logic Input Level High",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": null,
          "conditions": "Vout = 0 V, TJ = –40 to +125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF Pin Logic Input Level Low",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "Vout = Nominal Output Voltage, TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF Pin Logic Input Level Low",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "Vout = Nominal Output Voltage, TJ = –40 to +125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF Pin Input Current",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "ON/OFF Pin = 5.0 V (off), TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF Pin Input Current",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "ON/OFF Pin = 0 V (on), TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Supply Voltage",
          "symbol": "Vin",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 45,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF Pin Input Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "–0.3 V ≤ V ≤ +Vin (max = +Vin)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage to Ground (Steady-State)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -1,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Minimum ESD Rating",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "Human Body Model: C = 100 pF, R = 1.5 kΩ",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "Soldering, 10 seconds",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage",
          "symbol": "Vin",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction-to-Ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "TO-263, 5-Lead (D2PAK)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction-to-Case",
          "symbol": "RθJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "TO-263, 5-Lead (D2PAK)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Frequency",
          "symbol": "fosc",
          "kind": "electrical",
          "unit": "kHz",
          "min": null,
          "typ": 52,
          "max": null,
          "conditions": "Fixed frequency internal oscillator",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "HT2576S-ADJ (HTCSEMI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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