LM5122MHE

{
  "slug": "lm5122mhe",
  "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)",
    "lm5122mhe",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "lm5122mhe.step",
    "lm5122mhe.lbr",
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    "docs/lm5122mhe-datasheet.pdf",
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    "viewers/footprint.html",
    "lm5122mhe-hero.glb",
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    "lm5122mhe-etched.glb"
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  "component": {
    "mpn": "LM5122MHE",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-20-EP",
    "pin_count": 21,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm5122.pdf",
    "parts": {
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      "footprint": "lm5122mhe.kicad_mod",
      "model_3d": "lm5122mhe-hero.glb",
      "model_3d_plain": "lm5122mhe-etched.glb",
      "model_3d_step": "lm5122mhe-etched.step",
      "model_3d_step_plain": "lm5122mhe.step",
      "lbr": "lm5122mhe.lbr"
    },
    "distributor_links": {
      "lcsc": "C544455"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T21:59:35Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SYNCOUT",
        "type": "output",
        "description": "Clock output pin providing a 180° shifted clock for interleaved operation, which can be left floating when unused."
      },
      {
        "number": "2",
        "name": "OPT",
        "type": "input",
        "description": "Clock synchronization selection pin that also enables or disables SYNCOUT in master/slave configuration, and it should not be left floating."
      },
      {
        "number": "3",
        "name": "CSN",
        "type": "input",
        "description": "Inverting input of the current sense amplifier, connected to the negative side of the current sense resistor."
      },
      {
        "number": "4",
        "name": "CSP",
        "type": "input",
        "description": "Non-inverting input of the current sense amplifier, connected to the positive side of the current sense resistor."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply voltage input for the VCC regulator, rated 4.5 V to 65 V recommended operating range, connected with short low-impedance paths."
      },
      {
        "number": "6",
        "name": "UVLO",
        "type": "input",
        "description": "Undervoltage lockout programming pin; below 0.4 V the regulator shuts down, and above 1.2 V the start-up sequence begins, and it should not be left floating."
      },
      {
        "number": "7",
        "name": "SS",
        "type": "input",
        "description": "Soft-start programming pin where an external capacitor and an internal 10-µA current source set the error amplifier reference ramp rate."
      },
      {
        "number": "8",
        "name": "SYNCIN/RT",
        "type": "input",
        "description": "Oscillator frequency is programmed by a single resistor to AGND, and the oscillator can be synchronized by a positive pulse applied to this pin, with a recommended maximum master oscillator frequency of 2 MHz."
      },
      {
        "number": "9",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground connection serving as the return for the internal voltage reference and analog circuits."
      },
      {
        "number": "10",
        "name": "FB",
        "type": "input",
        "description": "Inverting input of the internal error amplifier where the regulation threshold is 1.2 V and the output voltage is set by a resistor divider."
      },
      {
        "number": "11",
        "name": "COMP",
        "type": "output",
        "description": "Output of the internal error amplifier, where the loop compensation network connects between this pin and FB."
      },
      {
        "number": "12",
        "name": "SLOPE",
        "type": "input",
        "description": "Slope compensation is programmed by a single resistor connected between SLOPE and AGND."
      },
      {
        "number": "13",
        "name": "MODE",
        "type": "input",
        "description": "Switching mode selection pin with an internal 700-kΩ pullup and 100-kΩ pulldown defaulting to 0.15 V; voltages above the 1.2 V threshold enable forced PWM and below it enable diode emulation."
      },
      {
        "number": "14",
        "name": "RES",
        "type": "output",
        "description": "Restart timer pin for an external capacitor that sets hiccup-mode off-time and restart delay, and it must connect directly to AGND when hiccup mode is not required."
      },
      {
        "number": "15",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground connection for the low-side N-channel MOSFET gate driver, connected directly to the low-side MOSFET source."
      },
      {
        "number": "16",
        "name": "LO",
        "type": "output",
        "description": "Low-side N-channel MOSFET gate drive output, connected to the low-side MOSFET gate through a short, low-inductance path."
      },
      {
        "number": "17",
        "name": "VCC",
        "type": "power_in",
        "description": "VCC bias supply pin that must be locally decoupled to PGND with a low ESR/ESL capacitor placed as close to the controller as possible, with a recommended operating range of 14 V maximum."
      },
      {
        "number": "18",
        "name": "SW",
        "type": "bidirectional",
        "description": "Switching node of the boost regulator, connected to the bootstrap capacitor, high-side MOSFET source and low-side MOSFET drain through short, low-inductance paths, rated up to 100 V."
      },
      {
        "number": "19",
        "name": "HO",
        "type": "output",
        "description": "High-side N-channel MOSFET gate drive output, connected to the high-side MOSFET gate through a short, low-inductance path."
      },
      {
        "number": "20",
        "name": "BST",
        "type": "power_in",
        "description": "High-side driver supply for bootstrap gate drive, connected to the bootstrap diode cathode and bootstrap capacitor, with a recommended BST to SW voltage of 3.8 V to 14 V."
      },
      {
        "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: MPN LM5122MHE maps to the 20-pin PWP HTSSOP with exposed pad (package addendum, page 47). Pin number; Types are mapped from the datasheet's TYPE column. VCC (listed P/O/I) is mapped to power_in as the b; The EP exposed pad is listed in the table with no electrical connection; it is included as passive f"
        ],
        "pages_sent": 11,
        "cost_usd": 0.025,
        "at": "2026-11-05T21:59:26"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lm5122.pdf",
        "pages": 58,
        "sha256": "8b269c8857f1031c",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
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        "sha256": "e0d98110d1a7da0df9e6c4febdfd2f1aa9afa2cc9e823af3c14250aa6ac673a0",
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      }
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  }
}