LM20125MHX

{
  "slug": "lm20125mhx",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, HTSSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "lm20125mhx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm20125mhx.kicad_sym",
    "lm20125mhx.kicad_mod",
    "lm20125mhx.glb",
    "lm20125mhx.step",
    "lm20125mhx.lbr",
    "docs/hero.png",
    "docs/lm20125mhx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm20125mhx-hero.glb",
    "lm20125mhx-hero.overlay.json"
  ],
  "component": {
    "mpn": "LM20125MHX",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-16-EP",
    "pin_count": 17,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm20125",
    "parts": {
      "symbol": "lm20125mhx.kicad_sym",
      "footprint": "lm20125mhx.kicad_mod",
      "model_3d": "lm20125mhx-hero.glb",
      "model_3d_plain": "lm20125mhx.glb",
      "model_3d_step": "lm20125mhx-etched.step",
      "model_3d_step_plain": "lm20125mhx.step",
      "lbr": "lm20125mhx.lbr"
    },
    "distributor_links": {
      "lcsc": "C2070647"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T19:21:33Z",
      "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 an internal 5 µA source; if driven externally below 800 mV it overrides the internal reference, and if left open an internal 1 ms soft-start ramp is used."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the inverting input of the internal transconductance error amplifier, which regulates against the internal 800 mV reference."
      },
      {
        "number": "3",
        "name": "PGOOD",
        "type": "output",
        "description": "Open-drain power-good output that indicates the output is regulating within tolerance and requires a 10 kΩ to 100 kΩ pull-up resistor for most applications."
      },
      {
        "number": "4",
        "name": "COMP",
        "type": "passive",
        "description": "External compensation pin where a resistor and capacitor are connected to compensate the device."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "Not internally connected; the datasheet states this pin must be connected to GND to ensure proper operation."
      },
      {
        "number": "6",
        "name": "PVIN",
        "type": "power_in",
        "description": "Input voltage to the internal power switches, specified for 2.95 V to 5.5 V; tie PVIN pins 6 and 7 together at the device with a low-ESR capacitor placed nearby."
      },
      {
        "number": "7",
        "name": "PVIN",
        "type": "power_in",
        "description": "Input voltage to the internal power switches, specified for 2.95 V to 5.5 V; tie PVIN pins 6 and 7 together at the device with a low-ESR capacitor placed nearby."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "output",
        "description": "PWM switch output of the internal power switches; pins 8 and 9 are tied together."
      },
      {
        "number": "9",
        "name": "SW",
        "type": "output",
        "description": "PWM switch output of the internal power switches; pins 8 and 9 are tied together."
      },
      {
        "number": "10",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the internal power switches."
      },
      {
        "number": "11",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the internal power switches."
      },
      {
        "number": "12",
        "name": "EN",
        "type": "input",
        "description": "Precision enable input with hysteresis; an external divider sets the turn-on threshold, and it should be tied to PVIN if not used."
      },
      {
        "number": "13",
        "name": "VCC",
        "type": "power_out",
        "description": "Output of the internal 2.7 V sub-regulator, which must be bypassed with a 1 µF ceramic capacitor."
      },
      {
        "number": "14",
        "name": "AVIN",
        "type": "power_in",
        "description": "Analog supply that generates the internal bias and must be connected to VIN through a low-pass RC filter."
      },
      {
        "number": "15",
        "name": "AGND",
        "type": "power_in",
        "description": "Quiet analog ground for the internal bias circuitry."
      },
      {
        "number": "16",
        "name": "NC",
        "type": "unconnected",
        "description": "Not internally connected; the datasheet states this pin must be connected to GND to ensure proper operation."
      },
      {
        "number": "17",
        "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: Datasheet says NC pins must be connected to GND for proper operation, but they are typed 'unconnecte; The Connection Diagram text extracted from the PDF is garbled, so pin numbers come from the Pin Desc; PGOOD is an open-drain output; KiCad's open_collector is not in the allowed type list, so it is type",
          "exposed pad 17 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0498,
        "at": "2026-10-08T19:20:45"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm20125",
        "pages": 32,
        "sha256": "bd9ed15653c896bc",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lm20125mhx.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7982746831c0bd23f4690608869ad67776faae5c762fb0376666126a3998921b",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm20125mhx-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "72c429511c151b819f3fcadbb8fec2cfefe58f02c67678ff109d2a80790f1682",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}