LM20242MH

{
  "slug": "lm20242mh",
  "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)",
    "lm20242mh",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
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    "lm20242mh.kicad_mod",
    "lm20242mh.glb",
    "lm20242mh.step",
    "lm20242mh.lbr",
    "docs/hero.png",
    "docs/lm20242mh-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm20242mh-hero.glb",
    "lm20242mh-hero.overlay.json"
  ],
  "component": {
    "mpn": "LM20242MH",
    "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/lm20242",
    "parts": {
      "symbol": "lm20242mh.kicad_sym",
      "footprint": "lm20242mh.kicad_mod",
      "model_3d": "lm20242mh-hero.glb",
      "model_3d_plain": "lm20242mh.glb",
      "model_3d_step": "lm20242mh-etched.step",
      "model_3d_step_plain": "lm20242mh.step",
      "lbr": "lm20242mh.lbr"
    },
    "distributor_links": {
      "lcsc": "C2871376"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T17:01:39Z",
      "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; an internal 5 µA source charges the external soft-start capacitor, and leaving it open activates an internal 1 ms soft-start ramp."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the inverting input of the error amplifier, which compares against the internal 800 mV reference."
      },
      {
        "number": "3",
        "name": "PGOOD",
        "type": "output",
        "description": "Open-drain power-good output indicating the output is within tolerance; a 10 kΩ to 100 kΩ pull-up resistor is recommended if used."
      },
      {
        "number": "4",
        "name": "COMP",
        "type": "passive",
        "description": "Output of the internal error amplifier and input to the PWM; the loop compensation network connects between COMP and AGND."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage with a nominal operating range of 4.5 V to 36 V (VIN to GND absolute maximum is 38 V)."
      },
      {
        "number": "6",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage with a nominal operating range of 4.5 V to 36 V (VIN to GND absolute maximum is 38 V)."
      },
      {
        "number": "7",
        "name": "SW",
        "type": "passive",
        "description": "Switch node: drain of the internal synchronous rectifier NMOS and source of the internal control NMOS; SW to GND is rated -0.5 V to 38 V (-1.5 V transient for under 20 ns)."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "passive",
        "description": "Switch node: drain of the internal synchronous rectifier NMOS and source of the internal control NMOS; SW to GND is rated -0.5 V to 38 V (-1.5 V transient for under 20 ns)."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, the internal reference for the power MOSFETs."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, the internal reference for the power MOSFETs."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, the internal reference for the power MOSFETs."
      },
      {
        "number": "12",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground, the internal reference for the regulator control functions."
      },
      {
        "number": "13",
        "name": "SW",
        "type": "passive",
        "description": "Switch node: drain of the internal synchronous rectifier NMOS and source of the internal control NMOS; SW to GND is rated -0.5 V to 38 V (-1.5 V transient for under 20 ns)."
      },
      {
        "number": "14",
        "name": "SW",
        "type": "passive",
        "description": "Switch node: drain of the internal synchronous rectifier NMOS and source of the internal control NMOS; SW to GND is rated -0.5 V to 38 V (-1.5 V transient for under 20 ns)."
      },
      {
        "number": "15",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage with a nominal operating range of 4.5 V to 36 V (VIN to GND absolute maximum is 38 V)."
      },
      {
        "number": "16",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage with a nominal operating range of 4.5 V to 36 V (VIN to GND absolute maximum is 38 V)."
      },
      {
        "number": "17",
        "name": "BOOT",
        "type": "passive",
        "description": "Bootstrap input: an internal diode from VCC charges the external capacitor connected from SW to BOOT; BOOT to SW is rated at 7 V maximum."
      },
      {
        "number": "18",
        "name": "VCC",
        "type": "power_out",
        "description": "Output of the high-voltage linear regulator, tracking VIN up to about 7.2 V and regulated to approximately 5.5 V; requires a 0.1 µF to 1 µF ceramic decoupling capacitor and is output only."
      },
      {
        "number": "19",
        "name": "EN",
        "type": "input",
        "description": "Enable and UVLO input; an external divider sets the line undervoltage lockout threshold, and an internal 2 µA pull-up enables the regulator if the pin is left unconnected."
      },
      {
        "number": "20",
        "name": "RT",
        "type": "passive",
        "description": "Internal oscillator frequency adjust input, normally biased at 550 mV; an external resistor from RT to AGND sets the switching frequency."
      },
      {
        "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-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The connection diagram text (page 2 Figure 1) is scrambled in the extracted text, so pin-to-name map; The SW pins were typed as passive and BOOT and RT as passive, since the datasheet does not assign Ki; The package addendum (page 24) lists the orderable parts LM20242MH/NOPB, MHE/NOPB and MHX/NOPB as HT",
          "exposed pad 21 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0586,
        "at": "2026-10-08T17:00:55"
      },
      "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"
    },
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
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        "sha256": "8c4d6173837df7f944a71f2a5be2cf45d1d6dc363d3b71451db788a98a5a3930",
        "checked": "2026-10-08",
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      },
      {
        "file": "lm20242mh-etched.step",
        "role": "eda",
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        "origin": "footprint origin = pad-pattern centre",
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        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  }
}