RT5797ALGQW

{
  "schema_version": 1,
  "type": "component",
  "slug": "rt5797algqw",
  "title": "RT5797ALGQW",
  "brief": "Richtek Tech DC-DC Converters, DFN-8-EP(2x2). 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)",
    "rt5797algqw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "RT5797ALGQW",
    "manufacturer": "Richtek Tech",
    "package": "DFN-8-EP(2x2)",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590226658789007360",
    "parts": {
      "symbol": "rt5797algqw.kicad_sym",
      "footprint": "rt5797algqw.kicad_mod",
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      "model_3d_plain": "rt5797algqw.glb",
      "model_3d_step": "rt5797algqw-etched.step",
      "model_3d_step_plain": "rt5797algqw.step",
      "lbr": "rt5797algqw.lbr"
    },
    "distributor_links": {
      "lcsc": "C2962578",
      "digikey": "RT5797ALGQWTR-ND",
      "mouser": "835-RT5797ALGQW"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T14:31:04Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "RT5797ALGQWTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "835-RT5797ALGQW",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Feedback voltage input; an external resistor divider from the output to GND, tapped to this pin, sets the output voltage, with a 0.6V reference (VREF 0.594V to 0.606V)."
      },
      {
        "number": "2",
        "name": "PG",
        "type": "output",
        "description": "Power good open-drain output that needs an external pull-up resistor; it is pulled up when FB is within 90% of the reference and otherwise LOW."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply voltage input; the RT5797A operates from 2.7V to 6V (absolute maximum supply 6.5V)."
      },
      {
        "number": "4",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground; the exposed pad (pin 9) must be soldered to a large PCB and connected to PGND for maximum power dissipation."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "6",
        "name": "LX",
        "type": "output",
        "description": "Switch node connecting the internal high-side and low-side power MOSFETs to the external inductor; absolute maximum is 0.3V to (VIN + 0.3V), with <20ns transients to 4.5V to 7.5V."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Enable control input; a logic-high enables the converter and a logic-low forces shutdown mode (EN below 400mV keeps the part in shutdown)."
      },
      {
        "number": "8",
        "name": "SGND",
        "type": "power_in",
        "description": "Signal ground for the control circuitry."
      },
      {
        "number": "9",
        "name": "PGND",
        "type": "power_in",
        "description": "Exposed pad, power ground; must be soldered to a large PCB and connected to PGND for maximum power dissipation."
      }
    ],
    "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 datasheet covers two packages (WDFN-8L 2x2 and WDFN-8SL 2x2) with a shared pin table. The RT5797; The pin table lists pins 4 and 9 together as PGND, with pin 9 labelled as the exposed pad. Pin 4 and; Pin types for LX (output), PG (output, open-drain) and SGND (power_in, GND class) were assigned from"
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        "cost_usd": 0.0756,
        "at": "2026-10-09T14:29:10"
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        "sha256": "0ebe371e02364fc5",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 9,
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  "metadata": {
    "specs": {
      "Manufacturer": "Richtek Tech",
      "Package": "DFN-8-EP(2x2)",
      "Category": "Power Management (PMIC)",
      "Pins": "9"
    },
    "characteristics": {
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          "name": "LX Pin Switch Voltage",
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          "name": "LX Pin Switch Voltage (transient)",
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        {
          "name": "Lead Temperature (soldering)",
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          "name": "ESD Susceptibility HBM",
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          "name": "Power Dissipation WDFN-8L 2x2",
          "symbol": "PD",
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        {
          "name": "Ambient Temperature Range (recommended)",
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          "name": "Input Voltage",
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        {
          "name": "Feedback Reference Voltage",
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          "kind": "electrical",
          "unit": "V",
          "min": 0.594,
          "typ": 0.6,
          "max": 0.606,
          "conditions": "",
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        {
          "name": "Feedback Leakage Current",
          "symbol": "IFB",
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          "max": 0.1,
          "conditions": "VFB = 0.6V",
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        {
          "name": "DC Bias Current (Active)",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 22,
          "max": 36,
          "conditions": "VFB = 0.63V, not switching",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "DC Bias Current (Shutdown)",
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          "kind": "electrical",
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        {
          "name": "Switching Leakage Current",
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          "name": "Switching Frequency",
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          "kind": "electrical",
          "unit": "MHz",
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        {
          "name": "Switch On Resistance, Low",
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          "unit": "m",
          "min": null,
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          "max": 85,
          "conditions": "ISW = 0.3A",
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          "max": 125,
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        {
          "name": "Valley Current Limit",
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          "min": 3.03,
          "typ": 3.7,
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        {
          "name": "Under-Voltage Lockout Threshold (rising)",
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          "kind": "electrical",
          "unit": "V",
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          "typ": 2.25,
          "max": 2.5,
          "conditions": "VDD rising",
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        {
          "name": "Enable Threshold Voltage H-Level",
          "symbol": "VENH",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": 0.85,
          "max": 1.05,
          "conditions": "EN rising",
          "source_page": 6,
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        {
          "name": "Enable Threshold Voltage L-Level",
          "symbol": "VENL",
          "kind": "electrical",
          "unit": "V",
          "min": 0.5,
          "typ": 0.75,
          "max": 0.95,
          "conditions": "EN falling",
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        {
          "name": "PG Pin Threshold (relative to VOUT)",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 85,
          "typ": 90,
          "max": 95,
          "conditions": "Rising",
          "source_page": 6,
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        {
          "name": "PG Pin Threshold (relative to VOUT)",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 80,
          "typ": 85,
          "max": 90,
          "conditions": "Falling",
          "source_page": 6,
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        {
          "name": "PG Open-Drain Impedance",
          "symbol": "",
          "kind": "electrical",
          "unit": "",
          "min": null,
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          "max": 20,
          "conditions": "PG = low",
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        {
          "name": "Soft-Start Time",
          "symbol": "tSS",
          "kind": "timing",
          "unit": "ms",
          "min": 0.5,
          "typ": 1.2,
          "max": 2,
          "conditions": "",
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        },
        {
          "name": "Minimum Off Time",
          "symbol": "tOFF_MIN",
          "kind": "timing",
          "unit": "ns",
          "min": 70,
          "typ": 120,
          "max": 180,
          "conditions": "",
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        {
          "name": "Maximum Duty Cycle",
          "symbol": "DMAX",
          "kind": "electrical",
          "unit": "%",
          "min": 70,
          "typ": null,
          "max": null,
          "conditions": "(Note 5)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output Discharge Switch On Resistance",
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          "unit": "k",
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        {
          "name": "Over-Voltage Protection (relative to VOUT)",
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          "kind": "electrical",
          "unit": "%",
          "min": 115,
          "typ": 120,
          "max": 125,
          "conditions": "Rising",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Package Thermal Resistance, Junction-to-Ambient (WDFN-8L 2x2)",
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          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 45.5,
          "max": null,
          "conditions": "Natural convection, TA = 25°C, JEDEC 51-7 four-layer board (Note 2)",
          "source_page": 5,
          "source": "datasheet"
        }
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    "email": "[email protected]"
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