LM20333MHX

{
  "slug": "lm20333mhx",
  "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)",
    "lm20333mhx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm20333mhx.kicad_sym",
    "lm20333mhx.kicad_mod",
    "lm20333mhx.glb",
    "lm20333mhx.step",
    "lm20333mhx.lbr",
    "docs/hero.png",
    "docs/lm20333mhx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm20333mhx-hero.glb",
    "lm20333mhx-hero.overlay.json"
  ],
  "component": {
    "mpn": "LM20333MHX",
    "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/lm20333",
    "parts": {
      "symbol": "lm20333mhx.kicad_sym",
      "footprint": "lm20333mhx.kicad_mod",
      "model_3d": "lm20333mhx-hero.glb",
      "model_3d_plain": "lm20333mhx.glb",
      "model_3d_step": "lm20333mhx-etched.step",
      "model_3d_step_plain": "lm20333mhx.step",
      "lbr": "lm20333mhx.lbr"
    },
    "distributor_links": {
      "lcsc": "C1880422"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T14:51:45Z",
      "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 4.5 µA source charges the external soft-start capacitor, the PWM can track an external low-impedance voltage ramp, and if left open an internal 1 ms soft-start ramp is used."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Feedback input connected to the inverting input of the internal transconductance error amplifier, which is referenced to the internal 800 mV reference."
      },
      {
        "number": "3",
        "name": "PGOOD",
        "type": "output",
        "description": "Open-drain power-good output indicating the output voltage is regulating 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."
      },
      {
        "number": "6",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage with a nominal operating range of 4.5 V to 36 V."
      },
      {
        "number": "7",
        "name": "SW",
        "type": "output",
        "description": "Switch node: the drain of the internal synchronous rectifier power NMOSFET and the source of the internal control power NMOSFET."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "output",
        "description": "Switch node: the drain of the internal synchronous rectifier power NMOSFET and the source of the internal control power NMOSFET."
      },
      {
        "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": "output",
        "description": "Switch node: the drain of the internal synchronous rectifier power NMOSFET and the source of the internal control power NMOSFET."
      },
      {
        "number": "14",
        "name": "SW",
        "type": "output",
        "description": "Switch node: the drain of the internal synchronous rectifier power NMOSFET and the source of the internal control power NMOSFET."
      },
      {
        "number": "15",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage with a nominal operating range of 4.5 V to 36 V."
      },
      {
        "number": "16",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage with a nominal operating range of 4.5 V to 36 V."
      },
      {
        "number": "17",
        "name": "BOOT",
        "type": "power_in",
        "description": "Boost input for the bootstrap capacitor, connected from SW to BOOT to power the control MOSFET gate driver; an internal diode from VCC charges it."
      },
      {
        "number": "18",
        "name": "VCC",
        "type": "power_out",
        "description": "Output of the high-voltage linear regulator that tracks VIN up to about 7.2 V and regulates to approximately 5.5 V; it needs 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 voltage 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": "SYNC",
        "type": "input",
        "description": "Frequency synchronization input: an external clock sets the switching frequency (synchronizable from 250 kHz to 1.5 MHz), and if left open the device runs at approximately 200 kHz."
      },
      {
        "number": "21",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "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 exposed pad is not a numbered lead; it is printed as 'EP' and is listed here as passive with a w; COMP is the error-amplifier output and PWM input; datasheet gives no KiCad-class term, so passive wa; PGOOD is an open-drain output; mapped to KiCad 'output'. An open-collector/open-drain class may be p",
          "exposed pad 21 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 6,
        "cost_usd": 0.057,
        "at": "2026-10-08T14:51:21"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm20333",
        "pages": 33,
        "sha256": "6bfea80a6826023b",
        "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"
    },
    "models_3d": [
      {
        "file": "lm20333mhx.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.41,
          6.5,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b0c803341b8a3d4e8ee2a5350aaf9d023bf8aad9fc15670a7cc9aa57aac12871",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm20333mhx-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.41,
          6.5,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c47def86601b94b2c4a9986ef38cd0c85ae7e00c27f4d433a37642fc7c5d70a0",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}