LM5576Q0MHX

{
  "slug": "lm5576q0mhx",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "lm5576q0mhx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
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    "README.md",
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    "lm5576q0mhx.step",
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    "docs/lm5576q0mhx-datasheet.pdf",
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    "lm5576q0mhx-hero.overlay.json"
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  "component": {
    "mpn": "LM5576Q0MHX",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-20-EP",
    "pin_count": 21,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm5576-q1",
    "parts": {
      "symbol": "lm5576q0mhx.kicad_sym",
      "footprint": "lm5576q0mhx.kicad_mod",
      "model_3d": "lm5576q0mhx-hero.glb",
      "model_3d_plain": "lm5576q0mhx.glb",
      "model_3d_step": "lm5576q0mhx-etched.step",
      "model_3d_step_plain": "lm5576q0mhx.step",
      "lbr": "lm5576q0mhx.lbr"
    },
    "distributor_links": {
      "lcsc": "C2072944"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T22:39:57Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_out",
        "description": "Bias regulator output that tracks VIN up to 9V and regulates to 7V above 9V, requires a 0.1µF to 1µF ceramic decoupling capacitor, and can be driven by an external 7.5V to 14V supply to reduce internal power dissipation."
      },
      {
        "number": "2",
        "name": "SD",
        "type": "input",
        "description": "Shutdown/UVLO input where below 0.7V the regulator is in low-power shutdown, 0.7V to 1.225V selects standby, above 1.225V enables operation, and an open pin is pulled up by an internal 5µA source; SD must not exceed 14V."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin with a rated operating range of 6V to 75V (absolute maximum 76V VIN to GND)."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin with a rated operating range of 6V to 75V (absolute maximum 76V VIN to GND); connect in parallel with pin 3."
      },
      {
        "number": "5",
        "name": "SYNC",
        "type": "bidirectional",
        "description": "Oscillator synchronization input or output that can be pulled low by an external open-drain clock (pulse width at least 15ns, clock frequency above the RT-set free-running frequency) or tied to other devices' SYNC pins to synchronize them."
      },
      {
        "number": "6",
        "name": "COMP",
        "type": "output",
        "description": "Internal error amplifier output where the loop compensation network must be connected between this pin and FB."
      },
      {
        "number": "7",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the inverting input of the error amplifier with a regulation threshold of 1.225V (absolute maximum 7V to GND for FB)."
      },
      {
        "number": "8",
        "name": "RT",
        "type": "input",
        "description": "Oscillator frequency set pin where a single resistor from RT to AGND sets the switching frequency, which is adjustable from 50kHz to 500kHz."
      },
      {
        "number": "9",
        "name": "RAMP",
        "type": "output",
        "description": "Slope-compensation ramp output where an external capacitor from RAMP to AGND sets the current-mode ramp slope, recommended between 50pF and 2000pF."
      },
      {
        "number": "10",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground serving as the reference for the internal control circuitry and the return for RT, RAMP, and SS components."
      },
      {
        "number": "11",
        "name": "SS",
        "type": "output",
        "description": "Soft-start pin where an external capacitor with the internal 10µA source sets the reference ramp time, and the pin is held low during standby, VCC UVLO, and thermal shutdown."
      },
      {
        "number": "12",
        "name": "OUT",
        "type": "output",
        "description": "Output voltage connection that connects directly to the regulated output voltage (OUT to GND is limited to VIN)."
      },
      {
        "number": "13",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground that serves as the low-side reference for the pre-switch and the IS sense resistor."
      },
      {
        "number": "14",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground that serves as the low-side reference for the pre-switch and the IS sense resistor; connect in parallel with pin 13."
      },
      {
        "number": "15",
        "name": "IS",
        "type": "input",
        "description": "Current sense input connected to the recirculating Schottky diode anode, where the internal sense resistor and sample-and-hold circuit read the diode current at the end of the off-time."
      },
      {
        "number": "16",
        "name": "IS",
        "type": "input",
        "description": "Current sense input connected to the recirculating Schottky diode anode, where the internal sense resistor and sample-and-hold circuit read the diode current at the end of the off-time; connect in parallel with pin 15."
      },
      {
        "number": "17",
        "name": "SW",
        "type": "output",
        "description": "Switch node that is the source of the internal buck switch and must be connected to the external Schottky diode and the buck inductor."
      },
      {
        "number": "18",
        "name": "SW",
        "type": "output",
        "description": "Switch node that is the source of the internal buck switch and must be connected to the external Schottky diode and the buck inductor; connect in parallel with pin 17."
      },
      {
        "number": "19",
        "name": "PRE",
        "type": "input",
        "description": "Open-drain bootstrap precharge assist pin that can be connected to SW, with an internal precharge MOSFET conducting for 265ns each cycle before the on-time to charge the bootstrap capacitor."
      },
      {
        "number": "20",
        "name": "BST",
        "type": "input",
        "description": "Bootstrap input where a 0.022µF ceramic capacitor (recommended) connects between BST and SW, charged from VCC through an internal diode while the buck switch is off."
      },
      {
        "number": "21",
        "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-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 pad is not a numbered pin in the datasheet (table lists it as 'EP', type not applicable); VCC is listed as type 'O' (output) in the datasheet; mapped to power_out because it is the internal ; The datasheet text is a Chinese translation; the pin descriptions above are English translations of ",
          "exposed pad 21 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 28,
        "cost_usd": 0.1553,
        "at": "2026-10-08T22:38:58"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm5576-q1",
        "pages": 38,
        "sha256": "805d7577975dee6d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "670409d8df93e21f83842cdcca8a36badec341492cf341c86417b4615d7a4895",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "lm5576q0mhx-etched.step",
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        "sha256": "961abae2c844459cdb524daf510ff992ed1c01ec8e5c865610ee1526c12ce5ce",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  }
}