L5991D013TR

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  "type": "component",
  "slug": "l5991d013tr",
  "title": "L5991D013TR",
  "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": [
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    "power management (pmic)",
    "l5991d013tr",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "L5991D013TR",
    "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/8603324805299261440",
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      "lbr": "l5991d013tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C3093772",
      "digikey": "497-L5991D013TR-ND",
      "mouser": "511-L5991D013TR"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T22:56:16Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-L5991D013TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "511-L5991D013TR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SYNC",
        "type": "bidirectional",
        "description": "Synchronization pin: as master it delivers positive pulses during the oscillator fall, and as slave it is edge-triggered by an external sync pulse (low level 1V max, high level 3.5V min)."
      },
      {
        "number": "2",
        "name": "RCT",
        "type": "passive",
        "description": "Oscillator pin for the external CT, RA and RB components that set the normal-mode frequency fosc and standby frequency fSB."
      },
      {
        "number": "3",
        "name": "DC",
        "type": "input",
        "description": "Duty cycle control: a voltage between 1V and 3V sets the maximum duty cycle between 0 and Dx, a voltage below 1V inhibits the driver output, and leaving it floating gives no duty-cycle limit (internal pull-up holds it above 3V)."
      },
      {
        "number": "4",
        "name": "VREF",
        "type": "power_out",
        "description": "Reference voltage of 5.0V ±1.5% at 25°C able to deliver some mA to an external circuit, with a small film capacitor (0.1µF typ.) recommended to SGND."
      },
      {
        "number": "5",
        "name": "VFB",
        "type": "input",
        "description": "Error amplifier inverting input, compared against the internal 2.5V reference to set the control voltage."
      },
      {
        "number": "6",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output, used for loop compensation connected to VFB; its voltage is also monitored to enter standby, with thresholds VT1 2.5V and VT2 4V."
      },
      {
        "number": "7",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start pin: external capacitor Css to SGND is charged by an internal current (ISSC, 14 to 26µA) up to about 7V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply for the internal signal circuitry; the device starts above the startup voltage (15V typ. for L5991, 8.4V typ. for L5991A) and shuts down below the UVLO threshold, with an internal zener limiting VCC to 25V."
      },
      {
        "number": "9",
        "name": "VC",
        "type": "power_in",
        "description": "Supply for the power section feeding the external switch driver, which absorbs pulsed current and needs a buffer capacitor to PGND (pin 11)."
      },
      {
        "number": "10",
        "name": "OUT",
        "type": "output",
        "description": "High-current totem-pole driver output (1.6A source, 2A sink peak) for a power MOSFET or BJT, with an internal clamp limiting the gate voltage to 13V."
      },
      {
        "number": "11",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground: the return path for the external MOSFET gate discharge current, which should be kept short and separate from signal currents."
      },
      {
        "number": "12",
        "name": "SGND",
        "type": "power_in",
        "description": "Signal ground referencing the control circuitry; all ground connections of the control-function external parts must lead to this pin."
      },
      {
        "number": "13",
        "name": "ISEN",
        "type": "input",
        "description": "Current sense input connected to the hot end of Rsense, where the switch is turned off at the peak-current threshold and a voltage above 1.2V triggers hiccup overcurrent protection, with about 100ns leading-edge blanking."
      },
      {
        "number": "14",
        "name": "DIS",
        "type": "input",
        "description": "Device disable: when the voltage rises above 2.5V the IC shuts down (latched) until VCC is pulled below the UVLO threshold; it must never be left floating and should be tied to SGND if unused."
      },
      {
        "number": "15",
        "name": "DC-LIM",
        "type": "input",
        "description": "Maximum duty-cycle limit: connecting it to VREF limits the duty cycle to 50% and halves the output frequency, while floating or grounding it imposes no limit."
      },
      {
        "number": "16",
        "name": "ST-BY",
        "type": "passive",
        "description": "Standby function pin: connect a resistor to RCT (with RA) to set the standby frequency; connect it to VREF or leave it floating if the standby function is not used."
      }
    ],
    "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 MPN L5991D013TR does not appear in the datasheet. The datasheet's SO16 ordering numbers are L599; The datasheet covers both L5991 and L5991A. Some supply thresholds differ between them (for example ; Pin types for SYNC (bidirectional), RCT, SS and ST-BY (passive) and DC, DIS, DC-LIM, ISEN, VFB (inpu"
        ],
        "pages_sent": 23,
        "cost_usd": 0.1043,
        "at": "2026-10-07T22:55:56"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603324805299261440",
        "pages": 23,
        "sha256": "cbc01f22c7c35f41",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SO-16",
      "Category": "Power Management (PMIC)",
      "Pins": "16"
    }
  },
  "variants": [],
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  "discovery_pitch": "L5991D013TR (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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