LM20242MHX

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm20242mhx",
  "title": "LM20242MHX",
  "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 supply chip",
    "lm20242mhx",
    "factory-2.0.0",
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  "component": {
    "mpn": "LM20242MHX",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-20-EP",
    "pin_count": 21,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm20242",
    "parts": {
      "symbol": "lm20242mhx.kicad_sym",
      "footprint": "lm20242mhx.kicad_mod",
      "model_3d": "lm20242mhx-etched.glb",
      "model_3d_plain": "lm20242mhx.glb",
      "model_3d_step": "lm20242mhx-etched.step",
      "model_3d_step_plain": "lm20242mhx.step",
      "lbr": "lm20242mhx.lbr"
    },
    "distributor_links": {
      "lcsc": "C179681"
    },
    "distributor_check": {
      "checked_at": "2026-10-01T17:24:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SS/TRK",
        "type": "input",
        "description": "Soft-start or tracking control input charged by internal 5 µA source; defaults to 1 ms internal ramp if open or tracks external voltage source."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to error amplifier inverting input from regulated output; compared against internal 800 mV reference."
      },
      {
        "number": "3",
        "name": "PGOOD",
        "type": "tri_state",
        "description": "Open drain power good output indicating output voltage is regulating within 93% to 97% of target with 20 µs deglitch delay."
      },
      {
        "number": "4",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output for pulse width modulator input; loop compensation network connected between COMP and AGND."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage pin with nominal operating range of 4.5V to 36V."
      },
      {
        "number": "6",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage pin with nominal operating range of 4.5V to 36V."
      },
      {
        "number": "7",
        "name": "SW",
        "type": "output",
        "description": "Switch node connecting drain of synchronous rectifier NMOSFET and source of control NMOSFET to inductor."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "output",
        "description": "Switch node connecting drain of synchronous rectifier NMOSFET and source of control NMOSFET to inductor."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin providing internal reference for power MOSFETs."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin providing internal reference for power MOSFETs."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin providing internal reference for power MOSFETs."
      },
      {
        "number": "12",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground providing internal reference for regulator control and feedback circuits."
      },
      {
        "number": "13",
        "name": "SW",
        "type": "output",
        "description": "Switch node connecting drain of synchronous rectifier NMOSFET and source of control NMOSFET to inductor."
      },
      {
        "number": "14",
        "name": "SW",
        "type": "output",
        "description": "Switch node connecting drain of synchronous rectifier NMOSFET and source of control NMOSFET to inductor."
      },
      {
        "number": "15",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage pin with nominal operating range of 4.5V to 36V."
      },
      {
        "number": "16",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage pin with nominal operating range of 4.5V to 36V."
      },
      {
        "number": "17",
        "name": "BOOT",
        "type": "input",
        "description": "Bootstrap capacitor input charged by internal diode from VCC when SW transitions low to power high-side gate driver."
      },
      {
        "number": "18",
        "name": "VCC",
        "type": "power_out",
        "description": "Regulated output set to 5.5V nominal for VIN above 7.2V and tracking VIN below 7.2V; requires 0.1 µF to 1 µF ceramic bypass capacitor."
      },
      {
        "number": "19",
        "name": "EN",
        "type": "input",
        "description": "Enable or UVLO input with rising threshold 1.25V typical and 50 mV hysteresis; 2 µA pull-up enables device if pin left unconnected."
      },
      {
        "number": "20",
        "name": "RT",
        "type": "input",
        "description": "Oscillator frequency adjust input; external resistor to AGND sets switching frequency from 100 kHz to 1 MHz per equation fSW = (82000/RRT − 56) kHz."
      },
      {
        "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": 32,
        "cost_usd": 0.2165,
        "at": "2026-10-01T17:24:11"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm20242",
        "pages": 32,
        "sha256": "860788d839eb1f90",
        "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 Supply Chip",
      "Pins": "21"
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
    "lm20242mhx"
  ],
  "discovery_pitch": "LM20242MHX (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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    "lm20242mhx.lbr",
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  "visibility": {
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}