JSM4057

{
  "schema_version": 1,
  "type": "component",
  "slug": "jsm4057",
  "title": "JSM4057",
  "brief": "JSMSEMI Battery Management, SOT-23-6L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "jsm4057"
  ],
  "component": {
    "mpn": "JSM4057",
    "manufacturer": "JSMSEMI",
    "package": "SOT-23-6L",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "Battery Management",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e66e34e874cc55a26bc1f9724e2e1c7e.pdf",
    "parts": {
      "symbol": "jsm4057.kicad_sym",
      "footprint": "jsm4057.kicad_mod",
      "model_3d": "jsm4057-etched.glb",
      "model_3d_plain": "jsm4057.glb",
      "model_3d_step": "jsm4057-etched.step",
      "model_3d_step_plain": "jsm4057.step",
      "lbr": "jsm4057.lbr"
    },
    "distributor_links": {
      "lcsc": "C963399"
    },
    "pins": [
      {
        "number": "1",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain charge status indicator. Pulled low by the internal switch while the battery is being charged; high-impedance otherwise. Typically drives a red LED to VCC through a series resistor. VOL ≈ 0.3 V @ 5 mA sink."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground / power return."
      },
      {
        "number": "3",
        "name": "BAT",
        "type": "power_out",
        "description": "Battery positive terminal. Sources charge current to the cell and regulates to 4.2 V float voltage. In standby / no-VCC condition, BAT leakage current is <3 uA. Absolute max BAT current 600 mA; absolute max voltage -0.3 V to 7 V."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Input supply (USB or adapter). Operating range 4.0 V - 6 V (absolute max -0.3 V to 7 V). Charging begins when VCC is above the UVLO threshold (typ 3.7 V) AND at least 100 mV above BAT. A 2.2 uF decoupling capacitor to GND is recommended."
      },
      {
        "number": "5",
        "name": "STDBY",
        "type": "output",
        "description": "Open-drain charge-complete indicator. Pulled low by the internal switch when the charge cycle has terminated; high-impedance during charging or fault. Typically drives a green LED. VOL ≈ 0.3 V @ 5 mA sink."
      },
      {
        "number": "6",
        "name": "PROG",
        "type": "input",
        "description": "Constant-current programming pin. Connect a resistor RPROG from PROG to GND to set the fast-charge current: IBAT = 1000 V / RPROG (e.g. 2 kΩ → 500 mA). PROG is regulated to 1.0 V in constant-current mode and 0.1 V in trickle mode; termination occurs when the servo voltage falls below 100 mV for >2 ms. Absolute max PROG voltage -0.3 V to 0.3 V; max current 600 uA."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/e66e34e874cc55a26bc1f9724e2e1c7e.pdf",
        "pages": 6,
        "sha256": "a94e1f5c3680b72e",
        "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": "jsm4057.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,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "jsm4057-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,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "75a34e9b12626505eaad4bc59d4dd289ff99b3b859118939402f2c5a2995f796",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "JSMSEMI",
      "Package": "SOT-23-6L",
      "Category": "PMIC",
      "Pins": "6"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "jsm4057"
  ],
  "discovery_pitch": "JSM4057 (JSMSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "jsm4057.kicad_sym",
    "jsm4057.kicad_mod",
    "jsm4057.glb",
    "jsm4057.step",
    "jsm4057-etched.step",
    "jsm4057.lbr",
    "docs/hero.png",
    "docs/jsm4057-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "JSM4057TP4057",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T23:15:05.845Z"
}