LM27402MHX

{
  "slug": "lm27402mhx",
  "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 management (pmic)",
    "lm27402mhx",
    "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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    "lm27402mhx.glb",
    "lm27402mhx.step",
    "lm27402mhx.lbr",
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    "docs/lm27402mhx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
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  "component": {
    "mpn": "LM27402MHX",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-16-EP",
    "pin_count": 17,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm27402",
    "parts": {
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      "footprint": "lm27402mhx.kicad_mod",
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      "model_3d_plain": "lm27402mhx.glb",
      "model_3d_step": "lm27402mhx-etched.step",
      "model_3d_step_plain": "lm27402mhx.step",
      "lbr": "lm27402mhx.lbr"
    },
    "distributor_links": {
      "lcsc": "C2658435"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T02:02:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CS+",
        "type": "input",
        "description": "Current sense positive input and noninverting input to the current-sense comparator."
      },
      {
        "number": "2",
        "name": "CS–",
        "type": "input",
        "description": "Current sense negative input and inverting input to the current-sense comparator with 10-µA nominal offset current."
      },
      {
        "number": "3",
        "name": "SS/TRACK",
        "type": "bidirectional",
        "description": "Soft-start or tracking input with +3-µA charging current for external capacitor; can be controlled by external voltage source; voltage must not exceed VDD."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Feedback input and inverting input to the error amplifier for output voltage setting and control loop compensation."
      },
      {
        "number": "5",
        "name": "COMP",
        "type": "output",
        "description": "Output of the internal error amplifier compared to internal ramp at PWM comparator to establish duty cycle command."
      },
      {
        "number": "6",
        "name": "FADJ",
        "type": "input",
        "description": "Frequency adjust input; switching frequency programmable between 200 kHz and 1.2 MHz via external resistor to GND."
      },
      {
        "number": "7",
        "name": "SYNC",
        "type": "input",
        "description": "Frequency synchronization input for external clock; frequency must exceed FADJ setting; must not exceed VDD and tie to GND if unused."
      },
      {
        "number": "8",
        "name": "EN",
        "type": "input",
        "description": "Enable input; apply voltage above 1.17 V typically to enable switching when VIN and VDD exceed UVLO thresholds; 100 mV hysteresis; 2-µA pullup to VDD; must not exceed VDD."
      },
      {
        "number": "9",
        "name": "PGOOD",
        "type": "tri_state",
        "description": "Open-drain power good monitor output goes low during overcurrent, short-circuit, UVLO, output overvoltage/undervoltage, overtemperature, or unregulated output; includes 20-μs deglitch filter; voltage should not exceed 5.5 V."
      },
      {
        "number": "10",
        "name": "VIN",
        "type": "power_in",
        "description": "Input voltage supply rail with operating range 3 V to 20 V; provides feedforward modulation and internal bias supply generation; requires 1-μF ceramic capacitor to GND."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground connection providing power and signal return for analog functions, low-side MOSFET gate, soft-start capacitor, and frequency adjust resistor."
      },
      {
        "number": "12",
        "name": "VDD",
        "type": "power_out",
        "description": "Internal sub-regulated 4.5-V bias supply for high-side MOSFET switching via CBOOT; 1-µF ceramic capacitor required to GND; cannot connect to separate rail; can connect to VIN only if VIN ≤ 5.5 V."
      },
      {
        "number": "13",
        "name": "LG",
        "type": "output",
        "description": "Low-side MOSFET gate drive output."
      },
      {
        "number": "14",
        "name": "SW",
        "type": "power_out",
        "description": "Power stage switch-node connection and return path for the high-side gate driver; switching node between high-side MOSFET and inductor."
      },
      {
        "number": "15",
        "name": "HG",
        "type": "output",
        "description": "High-side MOSFET gate drive output."
      },
      {
        "number": "16",
        "name": "CBOOT",
        "type": "power_out",
        "description": "High-side gate driver supply rail; requires 100-nF ceramic capacitor to SW and Schottky diode from VDD; provides gate drive voltage for high-side MOSFET."
      },
      {
        "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-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Exposed pad (EP) for thermal management is part of HTSSOP-16-EP package but is not assigned a number",
          "exposed pad 17 added from the footprint"
        ],
        "pages_sent": 8,
        "cost_usd": 0.1107,
        "at": "2026-10-07T02:02:40"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm27402",
        "pages": 54,
        "sha256": "603650c2a0683cad",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
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        "checked": "2026-10-07",
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  }
}