JSM4056

{
  "schema_version": 1,
  "type": "component",
  "slug": "jsm4056",
  "title": "JSM4056",
  "brief": "JSMSEMI Battery Management, ESOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "jsm4056"
  ],
  "component": {
    "mpn": "JSM4056",
    "manufacturer": "JSMSEMI",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "PMIC",
    "subcategory": "Battery Management",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2401051646_JSMSEMI-JSM4056_C2848864.pdf",
    "parts": {
      "symbol": "jsm4056.kicad_sym",
      "footprint": "jsm4056.kicad_mod",
      "model_3d": "jsm4056-etched.glb",
      "model_3d_plain": "jsm4056.glb",
      "model_3d_step": "jsm4056-etched.step",
      "model_3d_step_plain": "jsm4056.step",
      "lbr": "jsm4056.lbr"
    },
    "distributor_links": {
      "lcsc": "C2848864"
    },
    "pins": [
      {
        "number": "1",
        "name": "TS",
        "type": "input",
        "description": "Battery temperature sense/protection input. Connect an external NTC thermistor and resistor divider to set the battery temperature protection window. Internally compared against OTPH (45% x VCC) and OTPL (80% x VCC) thresholds; charging is suspended when VTS is outside this range. Tie to GND to disable the temperature protection function."
      },
      {
        "number": "2",
        "name": "PROG",
        "type": "passive",
        "description": "Charge current program pin. Connect a resistor RPROG from PROG to GND to set the constant charge current per IBAT = 1000 V / RPROG (RPROG >= 0.8 kOhm). Pin voltage is regulated to 1.0 V in constant-current mode and 0.1 V in trickle-charge mode; C/10 termination is detected via this pin."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground / power return."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Charger positive supply input (4.5 V typ 5 V, max 5.5 V absolute max 8 V). Powers all internal circuitry. Charging begins when VCC exceeds the UVLO threshold (typ 3.73 V) AND VCC > VBAT + 144 mV; if VCC-VBAT falls below 94 mV the part enters low-power shutdown (IBAT < 3 uA). Decouple with a 2.2 uF ceramic capacitor to GND."
      },
      {
        "number": "5",
        "name": "VBAT",
        "type": "power_out",
        "description": "Battery positive terminal / charge current output. Delivers up to 1000 mA of charge current and regulates the float voltage to 4.2 V (+/-1%). In standby or with VCC removed, BAT leakage is < 3 uA (typ 1 uA). Automatic recharge starts when VBAT falls below VFLOAT - 210 mV."
      },
      {
        "number": "6",
        "name": "STDBY",
        "type": "output",
        "description": "Charge-complete status indicator, open-drain output. Pulled low (VOL ~ 0.3 V at 5 mA) when the charge cycle has terminated to light an external LED; high-impedance during an active charge cycle."
      },
      {
        "number": "7",
        "name": "CHRG",
        "type": "output",
        "description": "Charge status indicator, open-drain output. Pulled low (VOL ~ 0.3 V at 5 mA) while the battery is being charged; goes high-impedance when charging completes. If charger is inserted with no battery attached the LED will blink to indicate the fault."
      },
      {
        "number": "8",
        "name": "CE",
        "type": "input",
        "description": "Chip enable input (absolute max -0.3 to 8 V). Tie to VCC or leave floating for normal operation; tie to GND to shut the chip down."
      },
      {
        "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://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2401051646_JSMSEMI-JSM4056_C2848864.pdf",
        "pages": 8,
        "sha256": "4c75700de81934b6",
        "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_EP2.41x3.3mm@sha256:5848244c5e72002e",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "jsm4056.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "jsm4056-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6b0d77370079c586f3d3bc27edc8f43d334b281c7fe56262d58d4546f039e0db",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "JSMSEMI",
      "Package": "ESOP-8",
      "Category": "PMIC",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "jsm4056"
  ],
  "discovery_pitch": "JSM4056 (JSMSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "jsm4056.kicad_sym",
    "jsm4056.kicad_mod",
    "jsm4056.glb",
    "jsm4056.step",
    "jsm4056-etched.step",
    "jsm4056.lbr",
    "docs/hero.png",
    "docs/jsm4056-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "updated_at": "2026-09-24T23:14:54.914Z"
}