MP4315GRE-Z

{
  "slug": "mp4315gre-z",
  "version": "0.1.0",
  "type": "component",
  "description": "Monolithic Power Systems DC-DC Converters, QFN-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "mp4315gre-z",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mp4315gre-z.kicad_sym",
    "mp4315gre-z.kicad_mod",
    "mp4315gre-z.glb",
    "mp4315gre-z.step",
    "mp4315gre-z.lbr",
    "docs/hero.png",
    "docs/mp4315gre-z-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mp4315gre-z-hero.glb",
    "mp4315gre-z-hero.overlay.json",
    "mp4315gre-z-etched.glb"
  ],
  "component": {
    "mpn": "MP4315GRE-Z",
    "manufacturer": "Monolithic Power Systems",
    "package": "QFN-20(4x4)",
    "pin_count": 21,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590903883332481024",
    "parts": {
      "symbol": "mp4315gre-z.kicad_sym",
      "footprint": "mp4315gre-z.kicad_mod",
      "model_3d": "mp4315gre-z-hero.glb",
      "model_3d_plain": "mp4315gre-z-etched.glb",
      "model_3d_step": "mp4315gre-z-etched.step",
      "model_3d_step_plain": "mp4315gre-z.step",
      "lbr": "mp4315gre-z.lbr"
    },
    "distributor_links": {
      "lcsc": "C3191994",
      "digikey": "1589-MP4315GRE-ZTR-ND",
      "mouser": "946-MP4315GRE-Z"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T10:28:53Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "1589-MP4315GRE-ZTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "946-MP4315GRE-Z",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "MODE",
        "type": "input",
        "description": "Selects forced continuous conduction mode (FCCM) when pulled high or advanced asynchronous mode (AAM) when pulled low under light loads, and must not be left floating."
      },
      {
        "number": "2",
        "name": "SYNCIN",
        "type": "input",
        "description": "Accepts a 350kHz to 1000kHz clock to synchronize the internal oscillator and supports multi-phase operation; connect to GND if unused and do not float."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply for the internal control circuitry and the power switch connected to SW, rated 3.3V to 45V, with a decoupling capacitor recommended from VIN to ground."
      },
      {
        "number": "4",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the power stage."
      },
      {
        "number": "5",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the power stage."
      },
      {
        "number": "6",
        "name": "BST",
        "type": "passive",
        "description": "Bootstrap positive supply for the high-side MOSFET; a bypass capacitor must be connected between BST and SW, sized per the datasheet BST diode and resistor section."
      },
      {
        "number": "7",
        "name": "SW",
        "type": "output",
        "description": "Switch node, the output of the internal power switch."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "output",
        "description": "Switch node, the output of the internal power switch."
      },
      {
        "number": "9",
        "name": "EN",
        "type": "input",
        "description": "Enable input that shuts the device down when pulled below 0.85V and enables it when pulled above 1V."
      },
      {
        "number": "10",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the power stage."
      },
      {
        "number": "11",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the power stage."
      },
      {
        "number": "12",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply for the internal control circuitry and the power switch connected to SW, rated 3.3V to 45V, with a decoupling capacitor recommended from VIN to ground."
      },
      {
        "number": "13",
        "name": "SYNCO",
        "type": "output",
        "description": "Outputs a clock 180° out of phase with the internal oscillator (or the inverse of the SYNCIN clock); float if not used."
      },
      {
        "number": "14",
        "name": "PG",
        "type": "output",
        "description": "Open-drain power good output that requires a pull-up resistor; it goes high when VOUT is within 93% to 106% of nominal and low when VOUT is above 107.5% or below 91%."
      },
      {
        "number": "15",
        "name": "NC",
        "type": "unconnected",
        "description": "Not internally connected, but must be tied to VCC or the output (≥3V) and must not be left floating."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_out",
        "description": "Bias supply that provides 4.9V to the internal control circuit and gate drivers, requiring a decoupling capacitor placed close to the pin."
      },
      {
        "number": "17",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground for the control circuitry."
      },
      {
        "number": "18",
        "name": "FB",
        "type": "input",
        "description": "Feedback input connected to the center point of the external resistor divider, with a feedback threshold voltage of about 0.815V."
      },
      {
        "number": "19",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start input; a capacitor from SS to GND sets the soft-start time, as the MP4315 sources 6µA into it at start-up to limit inrush current."
      },
      {
        "number": "20",
        "name": "FREQ",
        "type": "input",
        "description": "Switching frequency configuration; a resistor from this pin to GND sets fSW per the fSW vs. RFREQ curve in the datasheet."
      },
      {
        "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: Datasheet calls pin 15 'NC' (not connected) but also requires it to be tied to VCC or the output (≥3; Pin type for BST (bootstrap) was not stated explicitly in the datasheet; typed as passive as a bypas; Multi-pad pins are listed as one entry per physical pad number as printed in the pin function table;",
          "exposed pad 21 added from the footprint"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0472,
        "at": "2026-10-20T10:28:35"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590903883332481024",
        "pages": 34,
        "sha256": "5ea06c2bcd722c63",
        "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": [
      {
        "file": "mp4315gre-z.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c9476a1612023de37f27b4972110ab6ac6dc0eaf5ac48957a2e1c497650082a5",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mp4315gre-z-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "cff8b182a0a7bb76424749fd1f6f2bc18ea83248436ef049e4f8c9cf9d5f8b02",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}