LM25576MHX

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm25576mhx",
  "title": "LM25576MHX",
  "brief": "Texas Instruments DC-DC Converters, TSSOP-20-EP. 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)",
    "lm25576mhx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM25576MHX",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-20-EP",
    "pin_count": 21,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm25576",
    "parts": {
      "symbol": "lm25576mhx.kicad_sym",
      "footprint": "lm25576mhx.kicad_mod",
      "model_3d": "lm25576mhx-etched.glb",
      "model_3d_plain": "lm25576mhx.glb",
      "model_3d_step": "lm25576mhx-etched.step",
      "model_3d_step_plain": "lm25576mhx.step",
      "lbr": "lm25576mhx.lbr"
    },
    "distributor_links": {
      "lcsc": "C14654",
      "digikey": "LM25576MHXTR-ND",
      "mouser": "926-LM25576MHX"
    },
    "distributor_check": {
      "checked_at": "2026-10-01T18:17:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LM25576MHXTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "926-LM25576MHX",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "Bias regulator output, regulated 7V nominal when Vin >9V, tracks Vin when 6V <Vin <9V, requires 0.1µF-1µF ceramic bypass capacitor."
      },
      {
        "number": "2",
        "name": "SD",
        "type": "input",
        "description": "Shutdown/UVLO input; voltage <0.7V disables regulator, 0.7V-1.225V standby mode, >1.225V normal operation, 0.1V hysteresis."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Input power supply voltage, 6V to 42V nominal operating range, absolute maximum 45V."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Input power supply voltage, 6V to 42V nominal operating range, absolute maximum 45V."
      },
      {
        "number": "5",
        "name": "SYNC",
        "type": "bidirectional",
        "description": "Oscillator sync input/output; internal oscillator syncs with external clock via pulldown, minimum pulse width 15ns, multiple devices share single SYNC line."
      },
      {
        "number": "6",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output; loop compensation network connects between this pin and FB pin for Type II compensation."
      },
      {
        "number": "7",
        "name": "FB",
        "type": "input",
        "description": "Feedback input from regulator output to error amplifier inverting input, 1.225V internal regulation threshold."
      },
      {
        "number": "8",
        "name": "RT",
        "type": "input",
        "description": "Oscillator frequency setting input; external resistor to AGND determines operating frequency from 50kHz to 1MHz."
      },
      {
        "number": "9",
        "name": "RAMP",
        "type": "output",
        "description": "Ramp signal output for current mode control; external capacitor 50pF-2000pF to AGND sets ramp slope."
      },
      {
        "number": "10",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground, internal reference for regulator control functions and low-side reference for analog signals."
      },
      {
        "number": "11",
        "name": "SS",
        "type": "output",
        "description": "Soft start output; 10µA internal current source charges external capacitor, held low during standby/Vcc UVLO/thermal shutdown."
      },
      {
        "number": "12",
        "name": "OUT",
        "type": "output",
        "description": "Output voltage connection pin directly connected to regulator output voltage."
      },
      {
        "number": "13",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground; low-side reference for PRE switch and IS sense resistor, connects to output filter capacitor ground."
      },
      {
        "number": "14",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground; low-side reference for PRE switch and IS sense resistor, connects to output filter capacitor ground."
      },
      {
        "number": "15",
        "name": "IS",
        "type": "input",
        "description": "Current sense input for recirculation diode anode current; internal sense ratio 0.5V/A, sample/hold circuit updates at end of off-time."
      },
      {
        "number": "16",
        "name": "IS",
        "type": "input",
        "description": "Current sense input for recirculation diode anode current; internal sense ratio 0.5V/A, sample/hold circuit updates at end of off-time."
      },
      {
        "number": "17",
        "name": "SW",
        "type": "output",
        "description": "Switch node, internal buck MOSFET source terminal, -1.5V to 14V, connects to external Schottky diode cathode and inductor."
      },
      {
        "number": "18",
        "name": "SW",
        "type": "output",
        "description": "Switch node, internal buck MOSFET source terminal, -1.5V to 14V, connects to external Schottky diode cathode and inductor."
      },
      {
        "number": "19",
        "name": "PRE",
        "type": "tri_state",
        "description": "Bootstrap capacitor precharge assist; open-drain output conducts for 265ns per cycle before switch on-time to pre-charge bootstrap capacitor."
      },
      {
        "number": "20",
        "name": "BST",
        "type": "input",
        "description": "Bootstrap capacitor input; 0.022µF ceramic capacitor required between BST and SW, charges from Vcc during switch off, absolute maximum 60V."
      },
      {
        "number": "21",
        "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": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: PIN 6 (COMP) type is missing from the table; description 'internal error amplifier output' clearly i; PIN 19 (PRE) type contradiction: table lists type as I (Input), but description explicitly states 'o"
        ],
        "pages_sent": 27,
        "cost_usd": 0.3181,
        "at": "2026-10-01T18:17:58"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm25576",
        "pages": 37,
        "sha256": "ed0031dc76d29d88",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-20-EP",
      "Category": "Power Management (PMIC)",
      "Pins": "21"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm25576mhx"
  ],
  "discovery_pitch": "LM25576MHX (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "files": [
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    "lm25576mhx.glb",
    "lm25576mhx.step",
    "lm25576mhx.lbr",
    "docs/hero.png",
    "docs/lm25576mhx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "visibility": {
    "public": true
  }
}