MP2918GL-Z

{
  "slug": "mp2918gl-z",
  "version": "0.1.0",
  "type": "component",
  "description": "MONOLITHIC POWER SYSTEMS (MPS) Global Sourcing Parts, QFN-20(3x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "global sourcing parts",
    "mp2918gl-z",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mp2918gl-z.kicad_sym",
    "mp2918gl-z.kicad_mod",
    "mp2918gl-z.glb",
    "mp2918gl-z.step",
    "mp2918gl-z.lbr",
    "docs/hero.png",
    "docs/mp2918gl-z-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mp2918gl-z-hero.glb",
    "mp2918gl-z-hero.overlay.json",
    "mp2918gl-z-etched.glb"
  ],
  "component": {
    "mpn": "MP2918GL-Z",
    "manufacturer": "MONOLITHIC POWER SYSTEMS (MPS)",
    "package": "QFN-20(3x4)",
    "pin_count": 21,
    "category": "Global Sourcing Parts",
    "subcategory": "Global Sourcing Parts",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3664569776f09d1c7df16c118f8f884f.pdf",
    "parts": {
      "symbol": "mp2918gl-z.kicad_sym",
      "footprint": "mp2918gl-z.kicad_mod",
      "model_3d": "mp2918gl-z-hero.glb",
      "model_3d_plain": "mp2918gl-z-etched.glb",
      "model_3d_step": "mp2918gl-z-etched.step",
      "model_3d_step_plain": "mp2918gl-z.step",
      "lbr": "mp2918gl-z.lbr"
    },
    "distributor_links": {
      "lcsc": "C3191964"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T21:07:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 802 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC2",
        "type": "power_in",
        "description": "External power supply for the internal VCC1 regulator that disables power from VIN while higher than 4.7V; do not connect a supply greater than 12V."
      },
      {
        "number": "2",
        "name": "VCC1",
        "type": "power_out",
        "description": "Internal bias supply requiring a ≥1µF decoupling capacitor between VCC1 and PGND."
      },
      {
        "number": "3",
        "name": "SGND",
        "type": "power_in",
        "description": "Low-noise ground reference that should be connected to the VOUT side of the output capacitors."
      },
      {
        "number": "4",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start control input that programs the soft-start period with an external capacitor between SS and SGND."
      },
      {
        "number": "5",
        "name": "COMP",
        "type": "passive",
        "description": "Regulation control loop compensation node; connect an R-C network from COMP to SGND."
      },
      {
        "number": "6",
        "name": "FB",
        "type": "input",
        "description": "Error amplifier input; an external resistive divider from the output to SGND is compared to the internal 0.8V reference to set the regulation voltage."
      },
      {
        "number": "7",
        "name": "CCM/AAM",
        "type": "input",
        "description": "Floating it or connecting it to VCC1 selects CCM, while an external resistor to SGND selects AAM with the AAM voltage no less than 480mV."
      },
      {
        "number": "8",
        "name": "FREQ",
        "type": "passive",
        "description": "Frequency set pin; connect a resistor between FREQ and SGND to set the switching frequency."
      },
      {
        "number": "9",
        "name": "PG",
        "type": "output",
        "description": "Power good output, open drain."
      },
      {
        "number": "10",
        "name": "ILIM",
        "type": "input",
        "description": "Sense voltage limit set with three fixed options (float, VCC1, SGND) that set the nominal sense voltage at maximum output current."
      },
      {
        "number": "11",
        "name": "SYNCO",
        "type": "output",
        "description": "Frequency synchronous output providing a 180° out-of-phase clock when the part works in CCM for dual-channel operation."
      },
      {
        "number": "12",
        "name": "SENSE-",
        "type": "input",
        "description": "Negative input for current sense; the inductor current limit threshold is determined by the status of ILIM."
      },
      {
        "number": "13",
        "name": "SENSE+",
        "type": "input",
        "description": "Positive input for current sense; the inductor current limit threshold is determined by the status of ILIM."
      },
      {
        "number": "14",
        "name": "PGND",
        "type": "power_in",
        "description": "High-current ground reference for the low-side driver and VCC1 regulator, connected directly to the negative terminal of the VCC1 decoupling capacitor."
      },
      {
        "number": "15",
        "name": "BG",
        "type": "output",
        "description": "Bottom gate driver output connected to the gate of the synchronous N-channel MOSFET."
      },
      {
        "number": "16",
        "name": "SW",
        "type": "bidirectional",
        "description": "Switch node that is the reference for the VBST supply and high-current return for the bootstrapped switch."
      },
      {
        "number": "17",
        "name": "TG",
        "type": "output",
        "description": "Top gate drive for the top N-channel MOSFET, powered from the BST capacitor and returning to SW."
      },
      {
        "number": "18",
        "name": "BST",
        "type": "power_in",
        "description": "Bootstrap positive supply for the floating high-side driver; connect a bypass capacitor between BST and SW, charged via a diode from VCC1."
      },
      {
        "number": "19",
        "name": "IN",
        "type": "power_in",
        "description": "Input supply operating over a 4V to 40V range, needing a ceramic capacitor to prevent large input voltage spikes."
      },
      {
        "number": "20",
        "name": "EN/SYNC",
        "type": "input",
        "description": "Enable input with 1.22V threshold and 130mV hysteresis, usable for external UVLO, and an external sync clock applied here makes the internal clock follow."
      },
      {
        "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-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Exposed pad has no pin number in the datasheet; 'EP' used as a placeholder. Datasheet says it is not; Pin electrical types (e.g. SS, COMP, FREQ, SW) are inferred from descriptions since the datasheet gi; Datasheet marks MP2918GL as 'Under qualification'; -Z suffix means tape & reel."
        ],
        "pages_sent": 11,
        "cost_usd": 0.1218,
        "at": "2026-10-23T21:06:17"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/3664569776f09d1c7df16c118f8f884f.pdf",
        "pages": 30,
        "sha256": "6c8eb0da8f966f5f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "mp2918gl-z.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9305bb1f2217b3a3c4923c5aad9089084cd988b0009a6b8028004dfc00dac347",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mp2918gl-z-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": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7aea31c422c3bc8a1b7d5044c032c1a0984976b226ebc2960307745be1802082",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}