L6591TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "l6591tr",
  "title": "L6591TR",
  "brief": "STMicroelectronics AC-DC Controllers And Regulators, SO-16. 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)",
    "l6591tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "L6591TR",
    "manufacturer": "STMicroelectronics",
    "package": "SO-16",
    "pin_count": 16,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603317618724532224",
    "parts": {
      "symbol": "l6591tr.kicad_sym",
      "footprint": "l6591tr.kicad_mod",
      "model_3d": "l6591tr-hero.glb",
      "model_3d_plain": "l6591tr.glb",
      "model_3d_step": "l6591tr-etched.step",
      "model_3d_step_plain": "l6591tr.step",
      "lbr": "l6591tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C3093788",
      "digikey": "497-19601-2-ND",
      "mouser": "511-L6591TR"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T21:34:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-19601-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "511-L6591TR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "LINE",
        "type": "input",
        "description": "Line sensing input tied to the high-voltage bus through a resistor divider; below 1.25 V it shuts the IC down and discharges the soft-start capacitor, with a 15 µA hysteresis current source, and it should be tied to Vcc through 220 to 330 kΩ if unused."
      },
      {
        "number": "2",
        "name": "DIS",
        "type": "input",
        "description": "Latched device shutdown input that shuts the IC down and latches it when the voltage exceeds 4.5 V, with the latch cleared only when Vcc falls below the UVLO threshold; connect to GND if unused."
      },
      {
        "number": "3",
        "name": "ISEN",
        "type": "input",
        "description": "Current sense input for the PWM comparator with 200 ns blanking, a 0.8 V pulse-by-pulse OCP threshold and a 1.5 V hiccup-mode OCP shutdown level, with an absolute range of -3 to 7 V."
      },
      {
        "number": "4",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start pin where an internal 20 µA generator charges an external capacitor to ramp the duty cycle from zero, and the same capacitor sets the delay before OCP shutdown; it is quickly discharged in UVLO."
      },
      {
        "number": "5",
        "name": "OSC",
        "type": "passive",
        "description": "Oscillator timing pin where a resistor to VREF and a capacitor to GND set the switching frequency and deadtime, and the capacitor should not be lower than 220 pF."
      },
      {
        "number": "6",
        "name": "VREF",
        "type": "power_out",
        "description": "Voltage reference output of 5 V ±4% (all inclusive) that can supply up to 5 mA to an external circuit, with a 0.1 µF film capacitor to GND recommended for stability."
      },
      {
        "number": "7",
        "name": "COMP",
        "type": "input",
        "description": "Control input for PWM regulation driven by an optocoupler phototransistor (about 0.4 mA typ.); below 1.75 V it shuts the IC down and reduces consumption, and it restarts above 1.8 V to provide burst mode at light load."
      },
      {
        "number": "8",
        "name": "PFC_STOP",
        "type": "output",
        "description": "Open-drain ON/OFF control output for the PFC controller that goes low when COMP is below 1.75 V and opens above 1.8 V, is low during IC shutdown while Vcc is above the restart threshold, and is open during UVLO; leave open if unused."
      },
      {
        "number": "9",
        "name": "Vcc",
        "type": "power_in",
        "description": "Supply voltage for the signal part of the IC and the low-side gate driver, charged by the internal high-voltage generator through an external electrolytic capacitor to GND, with an IC supply absolute rating of self-limited at Icc = 20 mA."
      },
      {
        "number": "10",
        "name": "LVG",
        "type": "output",
        "description": "Low-side gate-drive output capable of 0.3 A min. source and 0.8 A min. sink peak current for the lower MOSFET, actively pulled to GND during UVLO."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground that returns both the low-side gate-drive current and the IC bias current and must be kept separate from pulsed current return paths."
      },
      {
        "number": "12",
        "name": "N.C.",
        "type": "unconnected",
        "description": "High-voltage spacer pin that is not connected internally, included to meet creepage distance safety requirements on the PCB."
      },
      {
        "number": "13",
        "name": "FGND",
        "type": "power_in",
        "description": "High-side floating ground that returns the high-side gate-drive current, with a floating ground voltage of -3 to VBOOT -18 V and a slew rate limit of 50 V/ns."
      },
      {
        "number": "14",
        "name": "HVG",
        "type": "output",
        "description": "High-side floating gate-drive output capable of 0.3 A min. source and 0.8 A min. sink peak current for the upper MOSFET, with a pull-down resistor to FGND (pin 13) keeping the gate off during UVLO."
      },
      {
        "number": "15",
        "name": "BOOT",
        "type": "power_in",
        "description": "High-side floating supply connected to a bootstrap capacitor referenced to FGND (pin 13) and fed by an internal synchronous bootstrap diode, with a floating supply absolute range of -1 to 618 V."
      },
      {
        "number": "16",
        "name": "HVSTART",
        "type": "input",
        "description": "High-voltage startup input connected directly to the rectified mains with an absolute range of -0.3 to 700 V, where a 0.8 mA internal source charges the Vcc capacitor until the startup threshold is reached."
      }
    ],
    "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 text provided covers only 6 of 41 pages and does not include the ordering information,; The pin connection figure (top view) lists names and numbers in a scrambled order, so the pin-to-num; The FGND floating ground voltage limit is printed as '-3 to VBOOT -18 V' in Table 2, which is ambigu"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0523,
        "at": "2026-10-07T21:34:08"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603317618724532224",
        "pages": 41,
        "sha256": "580b374e7f3f0537",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "l6591tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "l6591tr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "df83f5e8ce13b78a1f33aeb8dfa50c5934996217641562ad4b8ce004e9d9b171",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SO-16",
      "Category": "Power Management (PMIC)",
      "Pins": "16"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "l6591tr"
  ],
  "discovery_pitch": "L6591TR (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "files": [
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    "l6591tr.lbr",
    "docs/hero.png",
    "docs/l6591tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
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  "visibility": {
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}