LM25118Q1MHX

{
  "slug": "lm25118q1mhx",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments AC-DC Controllers And Regulators, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lm25118q1mhx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "lm25118q1mhx.step",
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    "docs/lm25118q1mhx-datasheet.pdf",
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  "component": {
    "mpn": "LM25118Q1MHX",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-20-EP",
    "pin_count": 21,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm25118-q1",
    "parts": {
      "symbol": "lm25118q1mhx.kicad_sym",
      "footprint": "lm25118q1mhx.kicad_mod",
      "model_3d": "lm25118q1mhx-etched.glb",
      "model_3d_plain": "lm25118q1mhx.glb",
      "model_3d_step": "lm25118q1mhx-etched.step",
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      "lbr": "lm25118q1mhx.lbr"
    },
    "distributor_links": {
      "lcsc": "C529284"
    },
    "distributor_check": {
      "checked_at": "2026-10-01T18:44:46Z",
      "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 with recommended operating range of 3 V to 42 V."
      },
      {
        "number": "2",
        "name": "UVLO",
        "type": "input",
        "description": "Undervoltage lockout input; regulator enters standby mode below 1.23 V and normal mode above 1.23 V with fixed 5 \u00b5A sourced current from pin."
      },
      {
        "number": "3",
        "name": "RT",
        "type": "input",
        "description": "Oscillator frequency setting pin; connect resistor between this pin and AGND for recommended frequency range of 50 kHz to 500 kHz."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Enable input; regulator enters low power mode drawing less than 10 \u00b5A when below 0.5 V and requires above 3 V for normal operation."
      },
      {
        "number": "5",
        "name": "RAMP",
        "type": "input",
        "description": "Ramp capacitor connection; external capacitor between this pin and AGND sets the ramp slope for emulated current mode control."
      },
      {
        "number": "6",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference."
      },
      {
        "number": "7",
        "name": "SS",
        "type": "input",
        "description": "Soft-start pin; external capacitor and internal 10 \u00b5A current source set the error amplifier reference rise time, held low when VCC <3.7 V or when UVLO/EN low or thermal shutdown active."
      },
      {
        "number": "8",
        "name": "FB",
        "type": "input",
        "description": "Feedback signal input from regulated output connected to the inverting input of the internal error amplifier."
      },
      {
        "number": "9",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output; connect loop compensation network between this pin and FB pin."
      },
      {
        "number": "10",
        "name": "VOUT",
        "type": "input",
        "description": "Output voltage monitor input for emulated current mode control; connect directly to regulated output."
      },
      {
        "number": "11",
        "name": "SYNC",
        "type": "input",
        "description": "Synchronization clock input for switching regulator frequency synchronization to external clock."
      },
      {
        "number": "12",
        "name": "CS",
        "type": "input",
        "description": "Current sense input; connect to the diode side of the current sense resistor."
      },
      {
        "number": "13",
        "name": "CSG",
        "type": "power_in",
        "description": "Current sense ground reference; connect to ground side of the current sense resistor."
      },
      {
        "number": "14",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground connection."
      },
      {
        "number": "15",
        "name": "LO",
        "type": "output",
        "description": "Boost MOSFET gate drive output; connect to gate of external boost MOSFET."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_out",
        "description": "Regulated bias supply output from internal regulator; locally decouple to PGND using low ESR/ESL capacitor placed as close to controller as possible."
      },
      {
        "number": "17",
        "name": "VCCX",
        "type": "power_in",
        "description": "Optional external bias supply input; when voltage exceeds 3.9 V, internal VCC regulator is disabled and VCC connected to VCCX, otherwise connect to AGND if not used."
      },
      {
        "number": "18",
        "name": "HB",
        "type": "power_in",
        "description": "High-side gate driver bootstrap supply; connect bootstrap capacitor between HB and HS with capacitor placed close to controller."
      },
      {
        "number": "19",
        "name": "HO",
        "type": "output",
        "description": "High-side (buck) MOSFET gate drive output; connect to high-side MOSFET gate through short, low inductance path."
      },
      {
        "number": "20",
        "name": "HS",
        "type": "input",
        "description": "High-side MOSFET source pin; connect to source terminal of high-side buck MOSFET and bootstrap capacitor."
      },
      {
        "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": [],
        "pages_sent": 9,
        "cost_usd": 0.1649,
        "at": "2026-10-01T18:44:25"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm25118-q1",
        "pages": 41,
        "sha256": "39d708876b7ff442",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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}