LM25116MHX

{
  "slug": "lm25116mhx",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lm25116mhx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm25116mhx.kicad_sym",
    "lm25116mhx.kicad_mod",
    "lm25116mhx.glb",
    "lm25116mhx.step",
    "lm25116mhx.lbr",
    "docs/hero.png",
    "docs/lm25116mhx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "LM25116MHX",
    "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/lm25116",
    "parts": {
      "symbol": "lm25116mhx.kicad_sym",
      "footprint": "lm25116mhx.kicad_mod",
      "model_3d": "lm25116mhx-etched.glb",
      "model_3d_plain": "lm25116mhx.glb",
      "model_3d_step": "lm25116mhx-etched.step",
      "model_3d_step_plain": "lm25116mhx.step",
      "lbr": "lm25116mhx.lbr"
    },
    "distributor_links": {
      "lcsc": "C390951",
      "digikey": "LM25116MHX-ND",
      "mouser": "926-LM25116MHX"
    },
    "distributor_check": {
      "checked_at": "2026-10-01T17:27:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LM25116MHX-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "926-LM25116MHX",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply voltage input rated 6 V to 42 V; serves as chip supply and input monitor for internal VCC regulator."
      },
      {
        "number": "2",
        "name": "UVLO",
        "type": "input",
        "description": "Undervoltage lockout input; regulator enters standby mode when UVLO < 1.215 V and resumes operation when UVLO > 1.215 V."
      },
      {
        "number": "3",
        "name": "RT/SYNC",
        "type": "input",
        "description": "Oscillator frequency set by external resistor to AGND for 50 kHz to 1 MHz range, or AC-coupled synchronization input for external clock."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Enable input; regulator draws less than 10 \u00b5A when EN < 0.5 V and operates normally when EN > 3.3 V."
      },
      {
        "number": "5",
        "name": "RAMP",
        "type": "input",
        "description": "Ramp control input; external capacitor connected to AGND sets the ramp slope for emulated current mode control."
      },
      {
        "number": "6",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference; connect to PGND through exposed pad ground connection under the LM25116."
      },
      {
        "number": "7",
        "name": "SS",
        "type": "input",
        "description": "Soft start input; external capacitor and internal 10 \u00b5A current source set the soft-start time constant for error amplifier reference rise."
      },
      {
        "number": "8",
        "name": "FB",
        "type": "input",
        "description": "Feedback signal from regulated output connected to error amplifier inverting input; regulation threshold is 1.215 V."
      },
      {
        "number": "9",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output; loop compensation network connected between COMP and FB pin."
      },
      {
        "number": "10",
        "name": "VOUT",
        "type": "input",
        "description": "Output voltage monitor; connect directly to the regulated output voltage."
      },
      {
        "number": "11",
        "name": "DEMB",
        "type": "input",
        "description": "Low-side MOSFET source voltage monitor for diode emulation; tie to ground for pre-biased load or use series resistor for synchronous operation."
      },
      {
        "number": "12",
        "name": "CS",
        "type": "input",
        "description": "Current sense amplifier positive input; connect to top of current sense resistor or drain of low-side MOSFET for RDS(ON) sensing."
      },
      {
        "number": "13",
        "name": "CSG",
        "type": "power_in",
        "description": "Current sense amplifier ground input; connect to bottom of sense resistor or source of low-side MOSFET for RDS(ON) current sensing."
      },
      {
        "number": "14",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground; connect to AGND through exposed pad ground connection under the LM25116."
      },
      {
        "number": "15",
        "name": "LO",
        "type": "output",
        "description": "Low-side gate driver output; connect to low-side MOSFET gate through short, low inductance path; rated for 3.5 A peak sink current."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Regulated bias supply voltage nominally 7.4 V; locally decouple with low ESR/ESL capacitor placed close to controller."
      },
      {
        "number": "17",
        "name": "VCCX",
        "type": "power_in",
        "description": "Optional external bias supply input rated 4.75 V to 15 V; disables internal regulator when VCCX > 4.5 V; must be connected to ground if unused."
      },
      {
        "number": "18",
        "name": "HB",
        "type": "power_in",
        "description": "High-side bootstrap supply rated 4.75 V to 15 V above SW; connect to bootstrap diode cathode and bootstrap capacitor positive terminal."
      },
      {
        "number": "19",
        "name": "HO",
        "type": "output",
        "description": "High-side gate driver output; connect to high-side MOSFET gate through short, low inductance path; rated 1 A peak source and 2.2 A peak sink current."
      },
      {
        "number": "20",
        "name": "SW",
        "type": "output",
        "description": "Switch node output; connect to bootstrap capacitor negative terminal and high-side MOSFET source; rated -3 V to 45 V."
      },
      {
        "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": [
          "extractor flagged: EP (exposed pad) is included as a connection point; it is not a numbered pin but serves critical the"
        ],
        "pages_sent": 45,
        "cost_usd": 0.3175,
        "at": "2026-10-01T17:27:05"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm25116",
        "pages": 45,
        "sha256": "c0f0378591e92c69",
        "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"
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  }
}