LM5117QPMHE

{
  "slug": "lm5117qpmhe",
  "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)",
    "lm5117qpmhe",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "lm5117qpmhe.step",
    "lm5117qpmhe.lbr",
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    "docs/lm5117qpmhe-datasheet.pdf",
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    "viewers/footprint.html",
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  "component": {
    "mpn": "LM5117QPMHE",
    "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/lm5117",
    "parts": {
      "symbol": "lm5117qpmhe.kicad_sym",
      "footprint": "lm5117qpmhe.kicad_mod",
      "model_3d": "lm5117qpmhe-hero.glb",
      "model_3d_plain": "lm5117qpmhe.glb",
      "model_3d_step": "lm5117qpmhe-etched.step",
      "model_3d_step_plain": "lm5117qpmhe.step",
      "lbr": "lm5117qpmhe.lbr"
    },
    "distributor_links": {
      "lcsc": "C2860704"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T22:32:07Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "UVLO",
        "type": "input",
        "description": "Undervoltage lockout programming pin: below 0.4 V the regulator is shut down, 0.4 V to 1.25 V gives standby with no HO/LO switching, and above 1.25 V enables switching, with a 20 µA source through the external UVLO resistors providing hysteresis."
      },
      {
        "number": "2",
        "name": "DEMB",
        "type": "input",
        "description": "Optional logic input where low enables diode emulation (low-side NMOS latched off after reverse current is detected) and high disables it, with an internal 50 kΩ pull-down that enables emulation when floating."
      },
      {
        "number": "3",
        "name": "RES",
        "type": "output",
        "description": "Restart timer pin that sets the hiccup-mode off time; hiccup begins after 256 consecutive PWM cycles of cycle-by-cycle current limiting, and a 10 µA source then charges the RES capacitor to 1.25 V to restart the controller."
      },
      {
        "number": "4",
        "name": "SS",
        "type": "input",
        "description": "Soft-start pin where an external capacitor and an internal 10 µA source set the error amplifier reference ramp rate, and the pin is held low when VCC < 5 V, UVLO < 1.25 V or during thermal shutdown."
      },
      {
        "number": "5",
        "name": "RT",
        "type": "input",
        "description": "Oscillator timing pin programmed by a single resistor to AGND, with a recommended maximum oscillator frequency of 750 kHz, and synchronizable to an external clock through a small coupling capacitor."
      },
      {
        "number": "6",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground and return for the internal 0.8 V voltage reference and analog circuits."
      },
      {
        "number": "7",
        "name": "VCCDIS",
        "type": "input",
        "description": "Optional input that disables the internal VCC regulator when above 1.25 V, with an internal 500 kΩ pull-down that keeps the regulator enabled when the pin is floating."
      },
      {
        "number": "8",
        "name": "FB",
        "type": "input",
        "description": "Inverting input of the internal error amplifier, where a resistor divider from the output sets the output voltage against a 0.8 V regulation threshold."
      },
      {
        "number": "9",
        "name": "COMP",
        "type": "output",
        "description": "Output of the internal error amplifier, with the loop compensation network connected between this pin and FB."
      },
      {
        "number": "10",
        "name": "CM",
        "type": "output",
        "description": "Current monitor output that provides the average sensed inductor current, to be monitored between CM and AGND, and left floating when not used."
      },
      {
        "number": "11",
        "name": "RAMP",
        "type": "input",
        "description": "PWM ramp input where an external resistor and capacitor between SW, RAMP and AGND set a ramp slope proportional to the input supply voltage."
      },
      {
        "number": "12",
        "name": "CS",
        "type": "input",
        "description": "Current sense amplifier input to be connected to the high side of the current sense resistor."
      },
      {
        "number": "13",
        "name": "CSG",
        "type": "power_in",
        "description": "Kelvin ground connection to be connected directly to the low side of the current sense resistor."
      },
      {
        "number": "14",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground return for the low-side NMOS gate driver, to be connected directly to the low side of the current sense resistor."
      },
      {
        "number": "15",
        "name": "LO",
        "type": "output",
        "description": "Low-side NMOS gate drive output, to be connected to the synchronous low-side gate through a short, low-inductance path."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Bias supply pin that should be decoupled to PGND with a low ESR/ESL capacitor placed as close to the controller as possible."
      },
      {
        "number": "17",
        "name": "SW",
        "type": "output",
        "description": "Switching node of the buck regulator, connected to the bootstrap capacitor, high-side NMOS source and low-side NMOS drain through a short, low-inductance path."
      },
      {
        "number": "18",
        "name": "HO",
        "type": "output",
        "description": "High-side NMOS gate drive output, to be connected to the high-side gate through a short, low-inductance path."
      },
      {
        "number": "19",
        "name": "HB",
        "type": "power_in",
        "description": "High-side driver supply for the bootstrap gate drive, connected to the external bootstrap diode cathode and bootstrap capacitor, placed as close to the controller as possible."
      },
      {
        "number": "20",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply voltage input for the VCC regulator, with VIN to AGND rated at −0.3 V to 75 V absolute maximum and 5.5 V to 65 V recommended."
      },
      {
        "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 pinout is taken from the HTSSOP (PWP) column of the Pin Functions table, which the datasheet pai; The datasheet covers both LM5117 and LM5117-Q1. The HTSSOP pin table is shared between them, but the; The text extraction garbled the Type column for some pins (PGND, LO, HO, VCC, HB, VIN). Types were a",
          "exposed pad 21 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0811,
        "at": "2026-10-07T22:31:43"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm5117",
        "pages": 49,
        "sha256": "9e27f24e84faebf5",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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    },
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        "sha256": "de4b41bded9be3af13ce2d9bfc9b6d88c2c08a5ca88aba13e30ccbe9ca9ddbf1",
        "checked": "2026-10-07",
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      {
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        "sha256": "18963e54e440010fb011abe251f8a66679d401507481dcffe8faba1c243c76a7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  }
}