MP9928GF-Z

{
  "slug": "mp9928gf-z",
  "version": "0.1.0",
  "type": "component",
  "description": "Monolithic Power Systems DC-DC Converters, TSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "mp9928gf-z",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mp9928gf-z.kicad_sym",
    "mp9928gf-z.kicad_mod",
    "mp9928gf-z.glb",
    "mp9928gf-z.step",
    "mp9928gf-z.lbr",
    "docs/hero.png",
    "docs/mp9928gf-z-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mp9928gf-z-hero.glb",
    "mp9928gf-z-hero.overlay.json",
    "mp9928gf-z-etched.glb"
  ],
  "component": {
    "mpn": "MP9928GF-Z",
    "manufacturer": "Monolithic Power Systems",
    "package": "TSSOP-20-EP",
    "pin_count": 21,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/fb854f54317abbb428ce136b45c36d9f.pdf",
    "parts": {
      "symbol": "mp9928gf-z.kicad_sym",
      "footprint": "mp9928gf-z.kicad_mod",
      "model_3d": "mp9928gf-z-hero.glb",
      "model_3d_plain": "mp9928gf-z-etched.glb",
      "model_3d_step": "mp9928gf-z-etched.step",
      "model_3d_step_plain": "mp9928gf-z.step",
      "lbr": "mp9928gf-z.lbr"
    },
    "distributor_links": {
      "lcsc": "C3194471",
      "digikey": "1589-1749-2-ND",
      "mouser": "946-MP9928GF-Z"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T18:43:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "1589-1749-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "946-MP9928GF-Z",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "power_in",
        "description": "Input supply: the MP9928 operates from a 4V to 60V input, and a ceramic capacitor is needed to prevent large voltage spikes from appearing at the input."
      },
      {
        "number": "2",
        "name": "EN/SYNC",
        "type": "input",
        "description": "Enable input with a 1.22V threshold and 130mV of hysteresis, usable for external UVLO, and an applied external sync clock makes the internal clock follow the sync frequency."
      },
      {
        "number": "3",
        "name": "VCC2",
        "type": "power_in",
        "description": "External power supply for the internal VCC1 regulator, which disables the VIN-derived supply when VCC2 is higher than 4.7V; do not connect more than 12V to this pin."
      },
      {
        "number": "4",
        "name": "VCC1",
        "type": "power_out",
        "description": "Internal bias supply that must be decoupled with a 1µF or greater ceramic capacitor, with capacitance no more than 4.7µF."
      },
      {
        "number": "5",
        "name": "SGND",
        "type": "power_in",
        "description": "Low-noise signal ground reference."
      },
      {
        "number": "6",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start control input, where an external capacitor from SS to SGND programs the soft-start period and is charged by an internal 4µA current source."
      },
      {
        "number": "7",
        "name": "COMP",
        "type": "passive",
        "description": "Compensation pin for the regulation control loop, where an RC network is connected from COMP to GND."
      },
      {
        "number": "8",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the error amplifier, where an external resistive divider from output to GND is compared to the internal +0.8V reference to set the regulation voltage."
      },
      {
        "number": "9",
        "name": "CCM/AAM",
        "type": "input",
        "description": "Mode-select pin: connecting to VCC1 or floating selects CCM, while a resistor to GND giving a low level selects AAM, with the AAM voltage no less than 480mV."
      },
      {
        "number": "10",
        "name": "FREQ",
        "type": "passive",
        "description": "A resistor connected between FREQ and GND sets the switching frequency."
      },
      {
        "number": "11",
        "name": "PG",
        "type": "output",
        "description": "Open-drain power good output that is pulled low when the regulator output falls outside about ±10% of its nominal value."
      },
      {
        "number": "12",
        "name": "ILIM",
        "type": "input",
        "description": "Current sense voltage limit select: connecting to GND sets 25mV, connecting to VCC1 sets 50mV, and floating sets 75mV at maximum output current."
      },
      {
        "number": "13",
        "name": "SYNCO",
        "type": "output",
        "description": "Outputs a clock 180° out-of-phase with the internal or external sync clock in CCM or DCM (not Sleep mode) for dual-channel co-pack, and outputs a DC voltage in other cases such as Sleep mode, Low Dropout mode, and fault protections."
      },
      {
        "number": "14",
        "name": "SENSE-",
        "type": "input",
        "description": "Negative input for the current sense, with the sensed inductor current limit threshold determined by the status of the ILIM pin."
      },
      {
        "number": "15",
        "name": "SENSE+",
        "type": "input",
        "description": "Positive input for the current sense, with the sensed inductor current limit threshold determined by the status of the ILIM pin."
      },
      {
        "number": "16",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground reference for the internal low-side switch driver and VCC1 regulator, to be connected directly to the negative terminal of the VCC1 decoupling capacitor."
      },
      {
        "number": "17",
        "name": "BG",
        "type": "output",
        "description": "Bottom gate driver output that connects to the gate of the synchronous N-channel MOSFET."
      },
      {
        "number": "18",
        "name": "SW",
        "type": "passive",
        "description": "Switch node that serves as the reference for the VBST supply and the high-current return for the bootstrapped switch."
      },
      {
        "number": "19",
        "name": "TG",
        "type": "output",
        "description": "Top gate drive output for the top N-channel MOSFET, driven from the BST capacitor and returned to SW for a true floating drive."
      },
      {
        "number": "20",
        "name": "BST",
        "type": "power_out",
        "description": "Bootstrap pin that is the positive supply for the internal floating high-side driver, with a bypass capacitor connected between BST and SW and charged from VCC1 through a diode."
      },
      {
        "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 datasheet pin-function table gives numbered pins 1-20 for TSSOP only; the exposed pad (EP) of th; Pin types for the switch node (SW), SS, COMP and FREQ were assigned as passive because the datasheet; The ordering part MP9928GF-Z is the TSSOP-20 EP (GF suffix, -Z for tape and reel), so the TSSOP pin ",
          "exposed pad 21 added from the footprint"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0744,
        "at": "2026-11-05T18:43:11"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/fb854f54317abbb428ce136b45c36d9f.pdf",
        "pages": 25,
        "sha256": "61fba8c327700363",
        "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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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          6.5,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e40c438796f73036bb41be74a31d5e6d41878473e2b85166fff2c2c0b82a085a",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mp9928gf-z-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9f8f445e14798375f04a4a96fc73736c57815a11c55bd4a18b59b4916f5b567c",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "TSSOP-20 EP",
      "source_page": 24,
      "D": {
        "nom_mm": 6.5,
        "range_mm": [
          6.4,
          6.6
        ]
      },
      "E1": {
        "nom_mm": 4.4,
        "range_mm": [
          4.3,
          4.5
        ]
      },
      "E": {
        "nom_mm": 6.4,
        "range_mm": [
          6.2,
          6.6
        ]
      },
      "e": {
        "nom_mm": 0.65,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.2,
        "range_mm": [
          null,
          1.2
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "mp9928gf-z.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}