LM43603PWP

{
  "slug": "lm43603pwp",
  "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)",
    "lm43603pwp",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "path": "docs/hero.png"
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    "lm43603pwp.step",
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    "docs/lm43603pwp-datasheet.pdf",
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    "viewers/footprint.html",
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  "component": {
    "mpn": "LM43603PWP",
    "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/lm43603",
    "parts": {
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      "lbr": "lm43603pwp.lbr"
    },
    "distributor_links": {
      "lcsc": 2860202,
      "digikey": "296-44415-5-ND",
      "mouser": "595-LM43603PWP"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T22:42:36Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-44415-5-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-LM43603PWP",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "output",
        "description": "Switching output internally connected to both power MOSFETs, swinging between 0 V and VIN, that connects to the power inductor."
      },
      {
        "number": "2",
        "name": "SW",
        "type": "output",
        "description": "Switching output internally connected to both power MOSFETs, swinging between 0 V and VIN, that connects to the power inductor."
      },
      {
        "number": "3",
        "name": "CBOOT",
        "type": "power_in",
        "description": "Bootstrap capacitor connection for high-side gate driver charged from SW with a maximum voltage rating of 5.5 V relative to SW."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_out",
        "description": "Internal bias supply output rated to 3.6 V maximum that requires bypass capacitor to AGND and must never be shorted to ground during operation."
      },
      {
        "number": "5",
        "name": "BIAS",
        "type": "power_in",
        "description": "Optional external LDO supply input accepting 3.3 V to 28 V (or external 3.3/5 V rail) with 1-10 µF bypass capacitor when used, or tie to ground when not used."
      },
      {
        "number": "6",
        "name": "SYNC",
        "type": "input",
        "description": "Clock input to synchronize switching action to external clock (−0.3 V to 5.5 V) with proper high-speed termination required to prevent ringing."
      },
      {
        "number": "7",
        "name": "RT",
        "type": "input",
        "description": "Frequency programming resistor connection to AGND that programs switching frequency from 200 kHz to 2.2 MHz (default 500 kHz when floating)."
      },
      {
        "number": "8",
        "name": "PGOOD",
        "type": "tri_state",
        "description": "Open-drain power-good flag output rated to 15 V maximum requiring 10 kΩ to 100 kΩ pullup resistor to logic rail ≤ 12 V."
      },
      {
        "number": "9",
        "name": "FB",
        "type": "input",
        "description": "Feedback sense input pin (−0.3 V to 1.1 V) connected to resistor divider for output voltage setting that must not be shorted to ground."
      },
      {
        "number": "10",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for internal references and logic that requires low-impedance connection to system ground and PAD."
      },
      {
        "number": "11",
        "name": "SS/TRK",
        "type": "input",
        "description": "Soft-start control pin that can be left floating for 4.1 ms internal ramp, connected to capacitor to extend ramp, or driven by external voltage for tracking."
      },
      {
        "number": "12",
        "name": "EN",
        "type": "input",
        "description": "Enable input (high = ON, low = OFF) for regulator and internal LDO that must connect to VIN, divider, or external logic source and never float."
      },
      {
        "number": "13",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input to internal LDO and high-side power FET with operating range 3.5 V to 36 V (absolute maximum 42 V) requiring connection to power supply and bypass capacitors."
      },
      {
        "number": "14",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input to internal LDO and high-side power FET with operating range 3.5 V to 36 V (absolute maximum 42 V) requiring connection to power supply and bypass capacitors."
      },
      {
        "number": "15",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground connected internally to low-side power FET that establishes return path for power and requires connection to system ground, PAD, and ground of CIN/COUT."
      },
      {
        "number": "16",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground connected internally to low-side power FET that establishes return path for power and requires connection to system ground, PAD, and ground of CIN/COUT."
      },
      {
        "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": [
          "exposed pad 17 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 9,
        "cost_usd": 0.149,
        "at": "2026-10-05T22:42:21"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm43603",
        "pages": 59,
        "sha256": "2642edca40e62388",
        "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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}