A8603KESTR-R

{
  "slug": "a8603kestr-r",
  "version": "0.1.0",
  "type": "component",
  "description": "Allegro MicroSystems, LLC AC-DC Controllers & Regulators, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "a8603kestr-r",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "a8603kestr-r.kicad_sym",
    "a8603kestr-r.kicad_mod",
    "a8603kestr-r.glb",
    "a8603kestr-r.step",
    "a8603kestr-r.lbr",
    "docs/hero.png",
    "docs/a8603kestr-r-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "a8603kestr-r-hero.glb",
    "a8603kestr-r-hero.overlay.json",
    "a8603kestr-r-etched.glb"
  ],
  "component": {
    "mpn": "A8603KESTR-R",
    "manufacturer": "Allegro MicroSystems, LLC",
    "package": "QFN-24-EP(4x4)",
    "pin_count": 25,
    "category": "Power Supply Chip",
    "subcategory": "AC-DC Controllers & Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/0904906e0e74b6ffc13a33076583b7ce.pdf",
    "parts": {
      "symbol": "a8603kestr-r.kicad_sym",
      "footprint": "a8603kestr-r.kicad_mod",
      "model_3d": "a8603kestr-r-hero.glb",
      "model_3d_plain": "a8603kestr-r-etched.glb",
      "model_3d_step": "a8603kestr-r-etched.step",
      "model_3d_step_plain": "a8603kestr-r.step",
      "lbr": "a8603kestr-r.lbr"
    },
    "distributor_links": {
      "lcsc": "C2650357",
      "digikey": "620-1694-2-ND",
      "mouser": "250-A8603KESTR-R"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T23:41:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "620-1694-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "250-A8603KESTR-R",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage for the IC, 3 to 10 V."
      },
      {
        "number": "2",
        "name": "FAULT",
        "type": "output",
        "description": "Open-drain output that pulls low in case of an error condition."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable pin for the IC; the system can only be enabled after VIN is above the UVLO level."
      },
      {
        "number": "4",
        "name": "VCOM",
        "type": "power_out",
        "description": "Output from the internal low-dropout (LDO) regulator powered by AVDD, providing 3 to 7.5 V."
      },
      {
        "number": "5",
        "name": "GNDVCOM",
        "type": "power_in",
        "description": "Ground reference for VCOM; connect to the ground plane."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect, reserved for test mode; connect to GND in the actual PCB."
      },
      {
        "number": "7",
        "name": "SCL",
        "type": "input",
        "description": "I2C clock signal generated by the master."
      },
      {
        "number": "8",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C data signal, acting as an input or open-drain output depending on data direction."
      },
      {
        "number": "9",
        "name": "ADDR",
        "type": "input",
        "description": "I2C address selection, giving up to 4 physical IC addresses based on voltage level."
      },
      {
        "number": "10",
        "name": "FSET",
        "type": "input",
        "description": "Input for synchronizing the boost and charge-pump switching frequency to an external clock, or connection to an external resistor that sets the switching frequency (350 kHz to 2.25 MHz)."
      },
      {
        "number": "11",
        "name": "BIAS",
        "type": "power_out",
        "description": "Output from the internal 2.8 V bias regulator; decouple to GND with a 1 μF ceramic capacitor."
      },
      {
        "number": "12",
        "name": "COMP",
        "type": "passive",
        "description": "Compensation pin for the external RZ and CZ components."
      },
      {
        "number": "13",
        "name": "AVDD",
        "type": "power_out",
        "description": "Output from the internal LDO powered by VOUT."
      },
      {
        "number": "14",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for signals; connect to the ground plane."
      },
      {
        "number": "15",
        "name": "VGL",
        "type": "power_out",
        "description": "Inverted charge-pump output (negative supply, 4 to -12 V)."
      },
      {
        "number": "16",
        "name": "CP22",
        "type": "passive",
        "description": "Capacitor terminal for the inverted charge pump."
      },
      {
        "number": "17",
        "name": "CP21",
        "type": "passive",
        "description": "Capacitor terminal for the inverted charge pump."
      },
      {
        "number": "18",
        "name": "VGH",
        "type": "power_out",
        "description": "Output of the 2× charge pump (positive supply, 14 to 29 V)."
      },
      {
        "number": "19",
        "name": "VGH3",
        "type": "power_out",
        "description": "Output of the 3× charge pump."
      },
      {
        "number": "20",
        "name": "CP11",
        "type": "passive",
        "description": "Capacitor terminal for the charge pump."
      },
      {
        "number": "21",
        "name": "CP12",
        "type": "passive",
        "description": "Capacitor terminal for the charge pump."
      },
      {
        "number": "22",
        "name": "VOUT",
        "type": "power_in",
        "description": "Connect to the boost output to supply the internal LDO and charge-pump regulators."
      },
      {
        "number": "23",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the internal boost switch; connect to the ground terminal of the output ceramic capacitor(s)."
      },
      {
        "number": "24",
        "name": "SW",
        "type": "output",
        "description": "Internal boost converter switch node; absolute maximum continuous voltage is -0.6 to 22 V."
      },
      {
        "number": "25",
        "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 Terminal List Table and the 'Package ES, 24-Pin QFN Pinouts' drawing on page 4 assign different ; The exposed thermal pad (PAD) is listed in the terminal table without a pin number, so it is not inc; The datasheet covers both the sidewall-plating (-R) and wettable-flank (-J) variants. The pinout on ",
          "exposed pad 25 added from the footprint"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0657,
        "at": "2026-10-30T23:41:01"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/0904906e0e74b6ffc13a33076583b7ce.pdf",
        "pages": 42,
        "sha256": "885e761285dfc7f9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "a8603kestr-r.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": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "a8603kestr-r-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": "336b10d3110b2d9c93171749131116bc36b0a0e78cc6c37402659679531fe219",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "ES",
      "source_page": 35,
      "D": {
        "nom_mm": 4.0,
        "range_mm": [
          null,
          null
        ]
      },
      "E1": {
        "nom_mm": 4.0,
        "range_mm": [
          null,
          null
        ]
      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 0.75,
        "range_mm": [
          null,
          null
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "a8603kestr-r.step",
        "verdict": "PASS",
        "reasons": [
          "height within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}