LM53603AQPWPRQ1

{
  "slug": "lm53603aqpwprq1",
  "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 supply chip",
    "lm53603aqpwprq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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  "component": {
    "mpn": "LM53603AQPWPRQ1",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-16-EP",
    "pin_count": 17,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm53602-q1",
    "parts": {
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      "lbr": "lm53603aqpwprq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C1848525",
      "digikey": "296-LM53603AQPWPRQ1TR-ND",
      "mouser": "595-LM53603AQPWPRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-06T03:55:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-LM53603AQPWPRQ1TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-LM53603AQPWPRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "output",
        "description": "Regulator switch node. Connect to power inductor. Connect pins 1 and 2 directly together at the PCB."
      },
      {
        "number": "2",
        "name": "SW",
        "type": "output",
        "description": "Regulator switch node. Connect to power inductor. Connect pins 1 and 2 directly together at the PCB."
      },
      {
        "number": "3",
        "name": "CBOOT",
        "type": "power_in",
        "description": "Bootstrap supply input for gate drivers. Connect a high quality 470 nF capacitor from this pin to SW."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_out",
        "description": "Internal 3.15 V regulator output. Used as supply to internal control circuits. Do not connect to any external loads. Can be used as logic supply for control inputs. Connect a high quality 3.3 µF capacitor from this pin to GND."
      },
      {
        "number": "5",
        "name": "BIAS",
        "type": "power_in",
        "description": "Input to internal voltage regulator. Connect to output voltage point. Do not ground. Connect a high quality 0.1 µF capacitor from this pin to GND."
      },
      {
        "number": "6",
        "name": "SYNC",
        "type": "input",
        "description": "Synchronization input to regulator. Used to synchronize the regulator switching frequency to the system clock. When not used connect to GND; do not float."
      },
      {
        "number": "7",
        "name": "FPWM",
        "type": "input",
        "description": "Mode control input to regulator. High = forced PWM (FPWM). Low = auto mode; automatic transition between PFM and PWM. Do not float."
      },
      {
        "number": "8",
        "name": "RESET",
        "type": "output",
        "description": "Open drain reset output. Connect to suitable voltage supply through a current limiting resistor. High = power OK. Low = fault. RESET will go low when EN = low."
      },
      {
        "number": "9",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to regulator. Connect to output voltage sense point for fixed 5 V and 3.3 V output. Connect to feedback divider tap point for ADJ option. Do not float or ground."
      },
      {
        "number": "10",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground for regulator and system. All electrical parameters are measured with respect to this pin. Connect to EP and PGND on PCB."
      },
      {
        "number": "11",
        "name": "EN",
        "type": "input",
        "description": "Enable input to the regulator. High = ON. Low = OFF. Can be connected directly to VIN. Do not float."
      },
      {
        "number": "12",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply to the regulator. Connect a high quality bypass capacitor(s) from this pin to PGND. Connect pins 12 and 13 directly together at the PCB."
      },
      {
        "number": "13",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply to the regulator. Connect a high quality bypass capacitor(s) from this pin to PGND. Connect pins 12 and 13 directly together at the PCB."
      },
      {
        "number": "14",
        "name": "N/C",
        "type": "unconnected",
        "description": "This pin has no connection to the device."
      },
      {
        "number": "15",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground to internal low side MOSFET. Connect to AGND and system ground. Connect pins 15 and 16 directly together at the PCB."
      },
      {
        "number": "16",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground to internal low side MOSFET. Connect to AGND and system ground. Connect pins 15 and 16 directly together at the PCB."
      },
      {
        "number": "17",
        "name": "EP",
        "type": "power_in",
        "description": "Exposed die attach paddle. Connect to ground plane for adequate heat sinking and noise reduction."
      }
    ],
    "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": [],
        "pages_sent": 11,
        "cost_usd": 0.1603,
        "at": "2026-10-06T03:54:43"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm53602-q1",
        "pages": 42,
        "sha256": "b2d0d78814aaf2aa",
        "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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}