ME4057ASPG

{
  "schema_version": 1,
  "type": "component",
  "slug": "me4057aspg",
  "title": "ME4057ASPG",
  "brief": "MICRONE Battery Management, SOIC-8-EP. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "me4057aspg"
  ],
  "component": {
    "mpn": "ME4057ASPG",
    "manufacturer": "MICRONE",
    "package": "SOIC-8-EP",
    "pin_count": 9,
    "category": "PMIC",
    "subcategory": "Battery Management",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/73dcaa6ee7fb76e0bd538fe68973f005.pdf",
    "parts": {
      "symbol": "me4057aspg.kicad_sym",
      "footprint": "me4057aspg.kicad_mod",
      "model_3d": "me4057aspg-etched.glb",
      "model_3d_plain": "me4057aspg.glb",
      "model_3d_step": "me4057aspg-etched.step",
      "model_3d_step_plain": "me4057aspg.step",
      "lbr": "me4057aspg.lbr"
    },
    "distributor_links": {
      "lcsc": "C82651"
    },
    "pins": [
      {
        "number": "1",
        "name": "TEMP",
        "type": "input",
        "description": "Battery temperature sense input. Connect to the wiper of a divider formed with the pack NTC thermistor. Charging is suspended when V_TEMP falls below ~45% V_CC or rises above ~80% V_CC. Tie to GND to disable the temperature-sense function."
      },
      {
        "number": "2",
        "name": "PROG",
        "type": "bidirectional",
        "description": "Charge-current program and monitor pin. A resistor R_PROG from PROG to GND sets the fast-charge current per I_BAT = (V_PROG/R_PROG)*1100 (V_PROG ≈ 1 V in constant-current mode, 0.1 V in precharge). The pin voltage may also be measured to monitor instantaneous charge current."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground return. Connect to the system ground plane; the ESOP exposed pad should also be soldered to this ground for thermal dissipation."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive input supply (4.7 V - 6.5 V typical, 5 V nominal) from a USB port or wall adapter. When VCC drops within ~80 mV of V_BAT the device enters low-power sleep, dropping I_BAT to <2 µA. Bypass locally with a ceramic capacitor."
      },
      {
        "number": "5",
        "name": "BAT",
        "type": "power_out",
        "description": "Battery connection pin. Sources the regulated charge current from the internal PMOS power FET (R_ON ≈ 650 mΩ) up to 1 A, and regulates to 4.2 V float voltage on the 'A' variant. Drain from the battery is <2 µA in disable/sleep modes."
      },
      {
        "number": "6",
        "name": "STDBY",
        "type": "output",
        "description": "Open-drain charge-terminated status output (active-low, overlined /STDBY). Pulled low when charging has terminated (battery full); otherwise high impedance. Typically drives a green LED to VCC through a current-limit resistor."
      },
      {
        "number": "7",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain charge-in-progress status output (active-low, overlined /CHRG). Pulled low while the battery is charging; goes to high impedance when charging terminates or the battery is out of temperature range. Typically drives a red LED to VCC."
      },
      {
        "number": "8",
        "name": "CE",
        "type": "input",
        "description": "Chip-enable input, TTL/CMOS compatible. Drive high (or leave floating pulled up) to place the device in normal operating mode; drive low to force the ME4057 into disable (shutdown) mode."
      },
      {
        "number": "9",
        "name": "EXPOSED PAD",
        "type": "power_in",
        "description": "Exposed thermal pad. Present in the package land pattern; connect it per the manufacturer datasheet thermal recommendation. Added because the footprint carries this pad and the symbol had no pin for it.",
        "source": "derived-from-footprint"
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/73dcaa6ee7fb76e0bd538fe68973f005.pdf",
        "pages": 21,
        "sha256": "58a52d07736328ec",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm@sha256:a7971720bdda0353",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "me4057aspg.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2d6f7e774e8143e3320cbd59eb5be9f3b7864614644e3b072006e1eb05fb7fa6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "me4057aspg-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7370a3bc120ca818f9c0a0e5cefc878431e2b9ee5193217e13cb9d9b09a728af",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "MICRONE",
      "Package": "SOIC-8-EP",
      "Category": "PMIC",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "me4057aspg"
  ],
  "discovery_pitch": "ME4057ASPG (MICRONE) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "me4057aspg.kicad_sym",
    "me4057aspg.kicad_mod",
    "me4057aspg.glb",
    "me4057aspg.step",
    "me4057aspg-etched.step",
    "me4057aspg.lbr",
    "docs/hero.png",
    "docs/me4057aspg-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "variants": [
    {
      "mpn": "ME4057ASPG",
      "kind": "packaging"
    },
    {
      "mpn": "ME4057ASPG-A5",
      "kind": "packaging"
    },
    {
      "mpn": "ME4057ASPGBSPG",
      "kind": "packaging"
    },
    {
      "mpn": "ME4057ASPGDSPG",
      "kind": "packaging"
    },
    {
      "mpn": "ME4057ASPGESPG",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T01:39:38.554Z"
}