LM43601AQPWPRQ1

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm43601aqpwprq1",
  "title": "LM43601AQPWPRQ1",
  "brief": "Texas Instruments DC-DC Converters, HTSSOP-16-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 supply chip",
    "lm43601aqpwprq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM43601AQPWPRQ1",
    "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/lm43601-q1",
    "parts": {
      "symbol": "lm43601aqpwprq1.kicad_sym",
      "footprint": "lm43601aqpwprq1.kicad_mod",
      "model_3d": "lm43601aqpwprq1-hero.glb",
      "model_3d_plain": "lm43601aqpwprq1.glb",
      "model_3d_step": "lm43601aqpwprq1-etched.step",
      "model_3d_step_plain": "lm43601aqpwprq1.step",
      "lbr": "lm43601aqpwprq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2071741",
      "digikey": "296-51300-2-ND",
      "mouser": "595-LM43601AQPWPRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-12T04:13:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-51300-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-LM43601AQPWPRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "power_out",
        "description": "Switching output of the regulator, internally connected to both power MOSFETs, to be connected to the power inductor."
      },
      {
        "number": "2",
        "name": "SW",
        "type": "power_out",
        "description": "Switching output of the regulator, internally connected to both power MOSFETs, to be connected to the power inductor."
      },
      {
        "number": "3",
        "name": "CBOOT",
        "type": "passive",
        "description": "Bootstrap capacitor connection for the high-side driver, where a high-quality 470-nF capacitor is connected from CBOOT to SW."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_out",
        "description": "Internal bias supply output for bypassing, with a bypass capacitor connected from this pin to AGND; no external load may be connected and the pin must never be shorted to ground during operation."
      },
      {
        "number": "5",
        "name": "BIAS",
        "type": "power_in",
        "description": "Optional internal LDO supply input, recommended tied to VOUT for 3.3 V ≤ VOUT ≤ 28 V or to an external 3.3-V or 5-V rail, with a 1 to 10 µF bypass to ground, and tied to ground when not used."
      },
      {
        "number": "6",
        "name": "SYNC",
        "type": "input",
        "description": "Clock input that synchronizes switching to an external clock, requiring proper high-speed termination to prevent ringing, and it must be connected to ground if not used and not left floating."
      },
      {
        "number": "7",
        "name": "RT",
        "type": "passive",
        "description": "Resistor RT connected from this pin to AGND programs the switching frequency, and the pin is left floating for the 500 kHz default."
      },
      {
        "number": "8",
        "name": "PGOOD",
        "type": "output",
        "description": "Open-drain power-good flag output that requires a 10-kΩ to 100-kΩ pullup to a logic rail or DC voltage no higher than 12 V."
      },
      {
        "number": "9",
        "name": "FB",
        "type": "input",
        "description": "Feedback sense input connected to the midpoint of the feedback divider to set VOUT, and must not be shorted to ground during operation."
      },
      {
        "number": "10",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground pin serving as ground reference for internal references and logic, to be connected to system ground."
      },
      {
        "number": "11",
        "name": "SS/TRK",
        "type": "input",
        "description": "Soft-start control pin that is left floating for the internal soft-start slew rate, connected to a capacitor to extend soft-start time, or connected to an external voltage ramp for tracking."
      },
      {
        "number": "12",
        "name": "EN",
        "type": "input",
        "description": "Enable input where high turns the device ON and low turns it OFF, connected to VIN, a resistor divider, or an external voltage or logic source, and must not be left floating."
      },
      {
        "number": "13",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input pin to the internal LDO and high-side power FET, requiring bypass capacitors CIN with the VIN-to-CIN-to-PGND path kept as short as possible."
      },
      {
        "number": "14",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input pin to the internal LDO and high-side power FET, requiring bypass capacitors CIN with the VIN-to-CIN-to-PGND path kept as short as possible."
      },
      {
        "number": "15",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground pin connected internally to the low-side power FET, to be connected to system ground, PAD, AGND, and the ground pins of CIN and COUT with a short path to CIN."
      },
      {
        "number": "16",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground pin connected internally to the low-side power FET, to be connected to system ground, PAD, AGND, and the ground pins of CIN and COUT with a short path to CIN."
      },
      {
        "number": "17",
        "name": "PAD",
        "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 exposed thermal PAD has no numeric pin number in the datasheet table (shown as a dash); it is li; Pin types are KiCad ERC classes inferred from the datasheet's P/G/A I/O column and functional descri; The pinout comes from the LM43601-Q1 datasheet (page 3, PWP 16-pin HTSSOP). The package addendum (pa",
          "exposed pad 17 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0533,
        "at": "2026-10-12T04:12:51"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm43601-q1",
        "pages": 51,
        "sha256": "b035d735bd2ad002",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "lm43601aqpwprq1.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7982746831c0bd23f4690608869ad67776faae5c762fb0376666126a3998921b",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm43601aqpwprq1-etched.step",
        "role": "eda",
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        "origin": "footprint origin = pad-pattern centre",
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        "extents_mm": [
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        "sha256": "322e9a2562ac86c8d27386be5d6b59d75e6e7c44d19b422b5f9833784b887cdb",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "HTSSOP-16-EP",
      "Category": "Power Supply Chip",
      "Pins": "17"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "b035d735bd2ad002",
      "rows": [
        {
          "name": "VIN to PGND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 42,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "EN to PGND",
          "symbol": "",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
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        },
        {
          "name": "FB, RT, SS/TRK to AGND",
          "symbol": "",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
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        },
        {
          "name": "PGOOD to AGND",
          "symbol": "",
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          "min": -0.3,
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        {
          "name": "SYNC to AGND",
          "symbol": "",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
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        },
        {
          "name": "BIAS to AGND",
          "symbol": "",
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          "min": -0.3,
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        {
          "name": "AGND to PGND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
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        },
        {
          "name": "SW to PGND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "SW to PGND less than 10-ns transients",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -3.5,
          "typ": null,
          "max": 42,
          "conditions": "",
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        },
        {
          "name": "CBOOT to SW",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "VCC to AGND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VIN to PGND",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.5,
          "typ": null,
          "max": 36,
          "conditions": "",
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        },
        {
          "name": "EN",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
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        },
        {
          "name": "FB",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 1.1,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "PGOOD",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 12,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "BIAS input not used",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "BIAS input used",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.3,
          "typ": null,
          "max": null,
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        },
        {
          "name": "AGND to PGND",
          "symbol": "",
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          "unit": "V",
          "min": -0.1,
          "typ": null,
          "max": 0.1,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Output voltage",
          "symbol": "VOUT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": 28,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IOUT",
          "kind": "recommended_operating",
          "unit": "A",
          "min": 0,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum input voltage for start-up",
          "symbol": "VIN-MIN-ST",
          "kind": "electrical",
          "unit": "V",
          "min": 3.8,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown quiescent current",
          "symbol": "ISHDN",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1.1,
          "max": 3.1,
          "conditions": "VEN = 0 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating quiescent current (non-switching) from VIN",
          "symbol": "IQ-NONSW",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 6,
          "max": 11,
          "conditions": "VEN = 3.3 V, VFB = 1.5 V, VBIAS = 3.4 V external",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating quiescent current (non-switching) from external VBIAS",
          "symbol": "IBIAS-NONSW",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 85,
          "max": 140,
          "conditions": "VEN = 3.3 V, VFB = 1.5 V, VBIAS = 3.4 V external",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Precision enable level for switching and regulator output: VOUT",
          "symbol": "VEN-VOUT-H",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": 2.1,
          "max": 2.42,
          "conditions": "VENABLE high level",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Enable input leakage current",
          "symbol": "ILKG-EN",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.8,
          "max": 1.75,
          "conditions": "VEN = 3.3 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Internal LDO input change over threshold to BIAS",
          "symbol": "VBIAS-ON",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2.96,
          "max": 3.2,
          "conditions": "VBIAS rising threshold",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Feedback voltage, TJ = 25ºC",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 1.009,
          "typ": 1.016,
          "max": 1.023,
          "conditions": "TJ = 25ºC",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Feedback voltage, TJ = -40ºC to 125ºC",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 0.999,
          "typ": 1.016,
          "max": 1.039,
          "conditions": "TJ = -40ºC to 125ºC",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current at FB pin",
          "symbol": "ILKG-FB",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 0.2,
          "max": 65,
          "conditions": "FB = 1.016 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Peak inductor current limit",
          "symbol": "IHS-LIMIT",
          "kind": "electrical",
          "unit": "A",
          "min": 2.07,
          "typ": 2.45,
          "max": 2.71,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Valley inductor current limit",
          "symbol": "ILS-LIMIT",
          "kind": "electrical",
          "unit": "A",
          "min": 0.94,
          "typ": 1.1,
          "max": 1.25,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Soft-start charge current",
          "symbol": "ISSC",
          "kind": "electrical",
          "unit": "µA",
          "min": 1.17,
          "typ": 2.2,
          "max": 2.85,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Power-good flag overvoltage tripping threshold",
          "symbol": "VPGOOD-HIGH",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 110,
          "max": 113,
          "conditions": "% of FB voltage",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Power-good flag undervoltage tripping threshold",
          "symbol": "VPGOOD-LOW",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 83,
          "max": 90,
          "conditions": "% of FB voltage",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "PGOOD pin pulldown resistance when power bad (LM43601A-Q1)",
          "symbol": "RPGOOD",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 69,
          "max": 150,
          "conditions": "LM43601A-Q1: VEN = 3.3 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "PGOOD pin pulldown resistance when power bad (LM43601A-Q1)",
          "symbol": "RPGOOD",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 150,
          "max": 350,
          "conditions": "LM43601A-Q1: VEN = 0 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Minimum high side MOSFET ON-time",
          "symbol": "TON-MIN",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 125,
          "max": 165,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Minimum high side MOSFET OFF-time",
          "symbol": "TOFF-MIN",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 200,
          "max": 250,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Oscillator default frequency",
          "symbol": "FOSC-DEFAULT",
          "kind": "electrical",
          "unit": "kHz",
          "min": 445,
          "typ": 500,
          "max": 570,
          "conditions": "RT pin open circuit",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Minimum adjustable frequency",
          "symbol": "FADJ",
          "kind": "electrical",
          "unit": "kHz",
          "min": 200,
          "typ": null,
          "max": null,
          "conditions": "With 1% resistors at RT pin",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Maximum adjustable frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": null,
          "typ": null,
          "max": 2200,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Frequency adjust accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Sync clock high level threshold",
          "symbol": "VSYNC-HIGH",
          "kind": "electrical",
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