LM25118MHX

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm25118mhx",
  "title": "LM25118MHX",
  "brief": "Texas Instruments DC-DC Converters, HTSSOP-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)",
    "lm25118mhx",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "LM25118MHX",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-20-EP",
    "pin_count": 21,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm25118",
    "parts": {
      "symbol": "lm25118mhx.kicad_sym",
      "footprint": "lm25118mhx.kicad_mod",
      "model_3d": "lm25118mhx-etched.glb",
      "model_3d_plain": "lm25118mhx.glb",
      "model_3d_step": "lm25118mhx-etched.step",
      "model_3d_step_plain": "lm25118mhx.step",
      "lbr": "lm25118mhx.lbr"
    },
    "distributor_links": {
      "lcsc": "C470962"
    },
    "distributor_check": {
      "checked_at": "2026-10-01T17:49:41Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage rated 3V to 42V (minimum 5V for startup)."
      },
      {
        "number": "2",
        "name": "UVLO",
        "type": "input",
        "description": "Undervoltage lockout threshold input; below 1.23V enters standby mode, above 1.23V enables normal operation; 5µA internal pull-up current."
      },
      {
        "number": "3",
        "name": "RT",
        "type": "input",
        "description": "Oscillator frequency-setting resistor connected to AGND; recommended range 50kHz to 500kHz."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Enable input; below 0.5V enters shutdown mode drawing less than 10µA, above 3V enables normal operation."
      },
      {
        "number": "5",
        "name": "RAMP",
        "type": "input",
        "description": "Ramp capacitor connection for emulated current-mode control; current source magnitude depends on VIN and VOUT."
      },
      {
        "number": "6",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for low-current signal paths including RT, RAMP, SS, FB, and COMP pins."
      },
      {
        "number": "7",
        "name": "SS",
        "type": "input",
        "description": "Soft-start capacitor input charged by internal 10µA current source; held low when VCC under-threshold, UVLO low, EN low, or thermal shutdown active."
      },
      {
        "number": "8",
        "name": "FB",
        "type": "input",
        "description": "Feedback signal input to inverting terminal of internal error amplifier with 1.23V reference."
      },
      {
        "number": "9",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output; loop compensation network connects between this pin and FB pin."
      },
      {
        "number": "10",
        "name": "VOUT",
        "type": "input",
        "description": "Output voltage monitor for emulated current-mode control; connect directly to regulated output."
      },
      {
        "number": "11",
        "name": "SYNC",
        "type": "input",
        "description": "Synchronization input for external clock; threshold 1.3V falling edge, minimum pulse width 15ns."
      },
      {
        "number": "12",
        "name": "CS",
        "type": "input",
        "description": "Current sense input connected to diode side of current sense resistor; 60µA bias current source."
      },
      {
        "number": "13",
        "name": "CSG",
        "type": "input",
        "description": "Current sense ground connected to ground side of sense resistor; 60µA bias current source."
      },
      {
        "number": "14",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for high-current switching paths and inductor current return."
      },
      {
        "number": "15",
        "name": "LO",
        "type": "output",
        "description": "Boost MOSFET gate drive output; peak source 2.2A, peak sink 2.7A; rise 16ns, fall 14ns."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_out",
        "description": "Bias regulator output nominally 7V; 35mA source limit; bypass with 0.1µF to 1µF low-ESR ceramic capacitor to PGND."
      },
      {
        "number": "17",
        "name": "VCCX",
        "type": "power_in",
        "description": "Optional external bias supply 3.85V to 15V; when greater than 3.85V disables internal VCC regulator."
      },
      {
        "number": "18",
        "name": "HB",
        "type": "power_in",
        "description": "High-side gate driver supply; bootstrap capacitor (0.1µF to 0.47µF) connected between HB and HS; rated -0.3V to 16V relative to HS."
      },
      {
        "number": "19",
        "name": "HO",
        "type": "output",
        "description": "Buck MOSFET gate drive output; peak source 2.2A, peak sink 3.5A; rise 14ns, fall 12ns."
      },
      {
        "number": "20",
        "name": "HS",
        "type": "input",
        "description": "High-side MOSFET source pin connection; bootstrap capacitor return and high-side gate driver reference."
      },
      {
        "number": "21",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "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": [],
        "pages_sent": 45,
        "cost_usd": 0.3203,
        "at": "2026-10-01T17:49:19"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm25118",
        "pages": 45,
        "sha256": "e7032a33be01a68b",
        "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": "HTSSOP-20-EP",
      "Category": "Power Management (PMIC)",
      "Pins": "21"
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
    "lm25118mhx"
  ],
  "discovery_pitch": "LM25118MHX (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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    "lm25118mhx.step",
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  "visibility": {
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}