TPS65300QRHFRQ1

{
  "slug": "tps65300qrhfrq1",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, VQFN-24-EP(4x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "tps65300qrhfrq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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  "component": {
    "mpn": "TPS65300QRHFRQ1",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-24-EP(4x5)",
    "pin_count": 25,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tps65300-q1",
    "parts": {
      "symbol": "tps65300qrhfrq1.kicad_sym",
      "footprint": "tps65300qrhfrq1.kicad_mod",
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      "model_3d_step_plain": "tps65300qrhfrq1.step",
      "lbr": "tps65300qrhfrq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2650304",
      "digikey": "296-40899-2-ND",
      "mouser": "595-TPS65300QRHFRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T21:34:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-40899-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TPS65300QRHFRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BOOT",
        "type": "passive",
        "description": "External bootstrap capacitor connected between BOOT and PH pins to provide voltage supply for internal high-side MOSFET gate drive, recharged on every recirculation cycle or approximately every fifth cycle at 100% duty cycle."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated input power supply with operating voltage range 5.6V to 40V (absolute maximum 45V transient), must be externally connected to VIN_D pin 24."
      },
      {
        "number": "3",
        "name": "IGN_EN",
        "type": "input",
        "description": "High-voltage tolerant ignition enable input with operating range 0V to 40V (absolute maximum 45V), internally pulled to ground, must be externally pulled high to enable device operation."
      },
      {
        "number": "4",
        "name": "BOOT_LDO",
        "type": "passive",
        "description": "External capacitor connection to ground for stabilization of internal regulated boot supply LDO that refreshes bootstrap capacitor every switching cycle."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection pin; leave open or connect to ground."
      },
      {
        "number": "6",
        "name": "RT/CLK",
        "type": "bidirectional",
        "description": "External resistor connection to ground that programs buck converter switching frequency in range 2MHz to 3MHz, or alternatively accepts external clock input to synchronize switching frequency."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Logic-level enable input with operating voltage range 0V to 5.25V, internally pulled to ground, device disabled when this pin is low."
      },
      {
        "number": "8",
        "name": "5V",
        "type": "power_out",
        "description": "Regulated 5V output supply requiring low-ESR ceramic capacitor to ground for loop stabilization and to prevent output voltage droop during load transients."
      },
      {
        "number": "9",
        "name": "IGN_ST",
        "type": "tri_state",
        "description": "Active-low open-drain ignition status output with maximum voltage 5.5V; asserted low when IGN_EN input is low or open, must be connected to external bias voltage through resistor."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground reference pin internally connected to exposed thermal pad; must be electrically connected to exposed pad and ground plane for proper thermal performance and current return paths."
      },
      {
        "number": "11",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection pin; leave open or connect to ground."
      },
      {
        "number": "12",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output with voltage range 0V to 7V used to connect external compensation network components for voltage-mode control loop."
      },
      {
        "number": "13",
        "name": "VSENSE",
        "type": "input",
        "description": "Inverting input node of error amplifier with voltage range 0V to 5.5V; forms voltage-sense network with internal resistors to VREG output and compared against internal 2V reference."
      },
      {
        "number": "14",
        "name": "1.2VSENSE",
        "type": "input",
        "description": "Voltage sense node for 1.234V supply with operating range 0V to 5.5V; initiates current foldback to limit short-circuit current when voltage drops to approximately 0.6V."
      },
      {
        "number": "15",
        "name": "1.2VDRIVE",
        "type": "output",
        "description": "Output current source with voltage range 0V to 8V for driving base of external bipolar transistor to regulate 1.234V supply; current limiting protects pin on both source and sink."
      },
      {
        "number": "16",
        "name": "3.3VSENSE",
        "type": "input",
        "description": "Voltage sense node for 3.3V supply with operating range 0V to 5.5V; initiates current foldback to limit short-circuit current when voltage drops to approximately 1.65V."
      },
      {
        "number": "17",
        "name": "3.3VDRIVE",
        "type": "output",
        "description": "Output current source with voltage range 0V to 8V for driving base of external bipolar transistor to regulate 3.3V supply; current limiting protects pin on both source and sink."
      },
      {
        "number": "18",
        "name": "SS",
        "type": "passive",
        "description": "External ceramic capacitor connection to ground that programs soft-start timing for buck regulator; charged by internal 50µA typical pull-up current source activated on IGN_EN rising edge."
      },
      {
        "number": "19",
        "name": "DELAY",
        "type": "passive",
        "description": "External capacitor connection to ground that programs power-on-reset delay time; charged by internal source current once VREG, 3.3V, and 1.234V supplies all exceed 90% of regulated values."
      },
      {
        "number": "20",
        "name": "VREG",
        "type": "power_out",
        "description": "Buck converter pre-regulator output at fixed 5.3V; requires ceramic capacitor (4.7µF to 10µF) to ground to ensure output voltage does not drop below reset threshold during load transients."
      },
      {
        "number": "21",
        "name": "nRST",
        "type": "tri_state",
        "description": "Active-low open-drain reset output with maximum voltage 5.5V; asserted low until VREG, 3.3V, and 1.234V outputs reach regulation and power-on delay timer expires, must be connected to external bias voltage through resistor."
      },
      {
        "number": "22",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground reference pin internally connected to exposed thermal pad; must be electrically connected to exposed pad and ground plane for proper thermal performance and current return paths."
      },
      {
        "number": "23",
        "name": "PH",
        "type": "output",
        "description": "Phase node output with voltage range -1V to 45V providing floating voltage reference for internal high-side MOSFET gate-drive circuitry in buck converter."
      },
      {
        "number": "24",
        "name": "VIN_D",
        "type": "power_in",
        "description": "Drain input for internal high-side MOSFET with operating voltage range 5.6V to 40V (absolute maximum 45V transient); must be externally connected to VIN pin 2."
      },
      {
        "number": "25",
        "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": [
          "extractor flagged: VREG (pin 20) Pin Functions table I/O column indicates 'I' (input) but description explicitly states",
          "exposed pad 25 added from the footprint"
        ],
        "pages_sent": 10,
        "cost_usd": 0.1674,
        "at": "2026-10-05T21:34:45"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tps65300-q1",
        "pages": 36,
        "sha256": "465d2056696ae9a5",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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}