LM51561HPWPR

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm51561hpwpr",
  "title": "LM51561HPWPR",
  "brief": "Texas Instruments DC-DC Converters, HTSSOP-14-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "lm51561hpwpr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM51561HPWPR",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-14-EP",
    "pin_count": 15,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm5156h",
    "parts": {
      "symbol": "lm51561hpwpr.kicad_sym",
      "footprint": "lm51561hpwpr.kicad_mod",
      "model_3d": "lm51561hpwpr-hero.glb",
      "model_3d_plain": "lm51561hpwpr.glb",
      "model_3d_step": "lm51561hpwpr-etched.step",
      "model_3d_step_plain": "lm51561hpwpr.step",
      "lbr": "lm51561hpwpr.lbr"
    },
    "distributor_links": {
      "lcsc": 2867851,
      "digikey": "296-LM51561HPWPRTR-ND",
      "mouser": "595-LM51561HPWPR"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T19:08:58Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-LM51561HPWPRTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-LM51561HPWPR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BIAS",
        "type": "power_in",
        "description": "Supply voltage input to the VCC regulator; connect bypass capacitor to PGND."
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "No electrical contact."
      },
      {
        "number": "3",
        "name": "VCC",
        "type": "power_out",
        "description": "Output of internal VCC regulator and MOSFET driver supply voltage; connect ceramic bypass capacitor to PGND."
      },
      {
        "number": "4",
        "name": "GATE",
        "type": "output",
        "description": "N-channel MOSFET gate drive output; connect directly to MOSFET gate through short, low inductance path."
      },
      {
        "number": "5",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground pin; connect directly to ground connection of sense resistor through low inductance wide and short path."
      },
      {
        "number": "6",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground pin; connect directly to analog ground plane through wide and short path."
      },
      {
        "number": "7",
        "name": "CS",
        "type": "input",
        "description": "Current sense input pin; connect to positive side of current sense resistor through short path."
      },
      {
        "number": "8",
        "name": "COMP",
        "type": "output",
        "description": "Output of internal transconductance error amplifier; connect loop compensation components between pin and ground plane."
      },
      {
        "number": "9",
        "name": "DITHOFF",
        "type": "input",
        "description": "Spread spectrum selection pin; connect to VCC to disable internal spread spectrum (clock dithering), connect to AGND to enable."
      },
      {
        "number": "10",
        "name": "FB",
        "type": "input",
        "description": "Inverting input of error amplifier; connect voltage divider from output to set output voltage in boost/SEPIC/non-isolated flyback topologies."
      },
      {
        "number": "11",
        "name": "SS",
        "type": "input",
        "description": "Soft-start time programming pin; external capacitor and internal current source set ramp rate of internal error amplifier reference during soft start."
      },
      {
        "number": "12",
        "name": "RT",
        "type": "input",
        "description": "Switching frequency setting pin; switching frequency is programmed by single resistor between RT and AGND."
      },
      {
        "number": "13",
        "name": "PGOOD",
        "type": "output",
        "description": "Power-good indicator open-drain output; goes low if FB is below undervoltage threshold."
      },
      {
        "number": "14",
        "name": "EN/UVLO/SYNC",
        "type": "input",
        "description": "Undervoltage lockout programming pin; converter startup and shutdown levels programmed through resistor divider; supports external clock synchronization via negative pulse."
      },
      {
        "number": "15",
        "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": [
          "exposed pad 15 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 7,
        "cost_usd": 0.1008,
        "at": "2026-10-05T19:08:45"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm5156h",
        "pages": 47,
        "sha256": "1c2afe6d19f818b2",
        "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"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "HTSSOP-14-EP",
      "Category": "Power Management (PMIC)",
      "Pins": "15"
    }
  },
  "variants": [],
  "sections": [
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    "readme",
    "breadcrumbs",
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  "discovery_triggers": [
    "lm51561hpwpr"
  ],
  "discovery_pitch": "LM51561HPWPR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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  "visibility": {
    "public": true
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}