AD4057

{
  "schema_version": 1,
  "type": "component",
  "slug": "ad4057",
  "title": "AD4057",
  "brief": "IDCHIP Battery Management, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "ad4057"
  ],
  "component": {
    "mpn": "AD4057",
    "manufacturer": "IDCHIP",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "Battery Management",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3128e9ea870377d6398d24a8d34939d0.pdf",
    "parts": {
      "symbol": "ad4057.kicad_sym",
      "footprint": "ad4057.kicad_mod",
      "model_3d": "ad4057-etched.glb",
      "model_3d_plain": "ad4057.glb",
      "model_3d_step": "ad4057-etched.step",
      "model_3d_step_plain": "ad4057.step",
      "lbr": "ad4057.lbr"
    },
    "distributor_links": {
      "lcsc": "C395461"
    },
    "pins": [
      {
        "number": "1",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain charge status output. Pulled low by an internal switch while charging is in progress; otherwise high-impedance. Typically drives an external LED (with a series resistor to VCC)."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground / power return."
      },
      {
        "number": "3",
        "name": "BAT",
        "type": "power_out",
        "description": "Charge current output to the single-cell Li-ion battery. An internal precision resistor divider regulates the final float voltage to 4.2 V (±1%). The divider is disconnected in shutdown mode, reducing battery drain to <2 uA. Supplies up to 600 mA charge current."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Input supply for the charger. Operating range 4.25 V to 6.5 V (abs max 4.2-5.5 V range noted; recommended VCC = 4.5-6.0 V). Should be bypassed with at least a 1 uF capacitor. When VCC falls to within 30 mV of VBAT, the part enters shutdown and IBAT drops below 2 uA."
      },
      {
        "number": "5",
        "name": "STDBY",
        "type": "output",
        "description": "Open-drain charge-complete indicator. Pulled low by an internal switch when the charge cycle terminates (C/10); otherwise high-impedance. Typically drives an external LED."
      },
      {
        "number": "6",
        "name": "PROG",
        "type": "bidirectional",
        "description": "Charge-current program, monitor, and shutdown pin. A 1% resistor RPROG from PROG to GND sets the fast-charge current: IBAT = (VPROG / RPROG) * 1000, with VPROG = 1.0 V typ in constant-current mode. The pin voltage also serves as an analog current-monitor readout. Floating RPROG (open) allows an internal 2.5 uA pull-up to raise PROG past the 1.22 V shutdown threshold, entering shutdown (ICC ≈ 45 uA); reconnecting RPROG resumes normal operation."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/3128e9ea870377d6398d24a8d34939d0.pdf",
        "pages": 6,
        "sha256": "c1f596377f986ede",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-6@sha256:f341c73aac9dcb55",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "ad4057.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ad4057-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "bca1b08539c6a2f899f52f6005cb3aa6438963bc80355827a873f6c8b9585722",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "IDCHIP",
      "Package": "SOT-23-6",
      "Category": "PMIC",
      "Pins": "6"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ad4057"
  ],
  "discovery_pitch": "AD4057 (IDCHIP) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ad4057.kicad_sym",
    "ad4057.kicad_mod",
    "ad4057.glb",
    "ad4057.step",
    "ad4057-etched.step",
    "ad4057.lbr",
    "docs/hero.png",
    "docs/ad4057-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T15:32:56.794Z"
}