LM3429Q1MH

{
  "slug": "lm3429q1mh",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments LED Drivers, HTSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "led drivers",
    "lm3429q1mh",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm3429q1mh.kicad_sym",
    "lm3429q1mh.kicad_mod",
    "lm3429q1mh.glb",
    "lm3429q1mh.step",
    "lm3429q1mh.lbr",
    "docs/hero.png",
    "docs/lm3429q1mh-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm3429q1mh-hero.glb",
    "lm3429q1mh-hero.overlay.json"
  ],
  "component": {
    "mpn": "LM3429Q1MH",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-14",
    "pin_count": 15,
    "category": "LED Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm3429-q1",
    "parts": {
      "symbol": "lm3429q1mh.kicad_sym",
      "footprint": "lm3429q1mh.kicad_mod",
      "model_3d": "lm3429q1mh-hero.glb",
      "model_3d_plain": "lm3429q1mh.glb",
      "model_3d_step": "lm3429q1mh-etched.step",
      "model_3d_step_plain": "lm3429q1mh.step",
      "lbr": "lm3429q1mh.lbr"
    },
    "distributor_links": {
      "lcsc": "C701126"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T09:39:35Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Input voltage pin (VIN range 4.5 V to 75 V); bypass with a 100 nF capacitor to AGND as close to the device as possible."
      },
      {
        "number": "2",
        "name": "COMP",
        "type": "input",
        "description": "Compensation pin; connect a capacitor to AGND to set the loop compensation."
      },
      {
        "number": "3",
        "name": "CSH",
        "type": "input",
        "description": "Current sense high pin; connect a resistor to AGND to set signal current, or a current source or potentiometer to AGND for analog dimming."
      },
      {
        "number": "4",
        "name": "RCT",
        "type": "input",
        "description": "Resistor-capacitor timing pin; connect a resistor from the switch node and a capacitor to AGND to set the switching frequency."
      },
      {
        "number": "5",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground that provides the ground return for CSH, COMP and RCT; connect to PGND through the DAP copper pad."
      },
      {
        "number": "6",
        "name": "OVP",
        "type": "input",
        "description": "Overvoltage protection pin; connect a resistor divider from the output or input to program OVLO, with a 1.24 V turn-off threshold and 20 µA hysteresis current source."
      },
      {
        "number": "7",
        "name": "nDIM",
        "type": "input",
        "description": "Dual-function PWM dimming and input UVLO pin with a 1.24 V turn-on threshold and 20 µA hysteresis current source."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave open."
      },
      {
        "number": "9",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for GATE; connect to AGND through the DAP copper pad to provide the ground return."
      },
      {
        "number": "10",
        "name": "GATE",
        "type": "output",
        "description": "Gate drive output; connect to the gate of the external N-channel FET."
      },
      {
        "number": "11",
        "name": "VCC",
        "type": "power_out",
        "description": "Internal regulator output; bypass with a 2.2 µF-3.3 µF ceramic capacitor to PGND."
      },
      {
        "number": "12",
        "name": "IS",
        "type": "input",
        "description": "Main switch current sense; connect to the drain of the main N-channel MOSFET for RDS(ON) sensing, or to a sense resistor installed in the source of the same device."
      },
      {
        "number": "13",
        "name": "HSP",
        "type": "input",
        "description": "LED current sense positive; connect through a series resistor to the LED current sense resistor."
      },
      {
        "number": "14",
        "name": "HSN",
        "type": "input",
        "description": "LED current sense negative; connect through a series resistor to the LED current sense resistor."
      },
      {
        "number": "15",
        "name": "DAP",
        "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 datasheet classifies VCC as 'I' (input), but its description says it is the internal regulator o; The thermal pad is labeled 'DAP' in the datasheet rather than a numbered pin, so it is listed under ; Pin 8 is a no-connect and is listed as unconnected. The table covers the PWP (HTSSOP-14) package; th",
          "exposed pad 15 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0563,
        "at": "2026-10-08T09:39:22"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm3429-q1",
        "pages": 65,
        "sha256": "3e1d13598a9c0c70",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 15,
        "described": 15,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lm3429q1mh.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.35,
          5.0,
          1.05
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e73930af88609deacee2bde98223bb9da2411f0cebb494015de765f0df216789",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm3429q1mh-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.35,
          5.0,
          1.05
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "30715eef0149325e89f8d42e766b55f3f3502d281f91220bf098eb93a42a859c",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}