WSP4056

{
  "schema_version": 1,
  "type": "component",
  "slug": "wsp4056",
  "title": "WSP4056",
  "brief": "Winsok Semicon Battery Management, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "wsp4056",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "WSP4056",
    "manufacturer": "Winsok Semicon",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590225475579637760",
    "parts": {
      "symbol": "wsp4056.kicad_sym",
      "footprint": "wsp4056.kicad_mod",
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      "lbr": "wsp4056.lbr"
    },
    "distributor_links": {
      "lcsc": "C2985892"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T18:21:37Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "TEMP",
        "type": "input",
        "description": "Battery temperature sense input connected to the battery NTC; charging is suspended if TEMP is below 45% or above 80% of Vcc, and tying TEMP to GND disables the temperature monitoring."
      },
      {
        "number": "2",
        "name": "PROG",
        "type": "passive",
        "description": "Constant-charge-current program and monitor pin: an external resistor to GND sets IBAT = VPROG/RPROG x 1330, with VPROG held at 0.1 V in precharge and 1 V in constant-current mode."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "4",
        "name": "Vcc",
        "type": "power_in",
        "description": "Positive input supply (4.0 V to 8.0 V, 5 V typical) that powers the internal circuits; the part enters low-power shutdown when Vcc is within 30 mV of BAT."
      },
      {
        "number": "5",
        "name": "BAT",
        "type": "power_out",
        "description": "Battery connection that supplies the charge current and the 4.2 V regulated float voltage; BAT leakage is below 2 uA when the charger is disabled or in sleep mode."
      },
      {
        "number": "6",
        "name": "STDBY",
        "type": "output",
        "description": "Open-drain charge-complete indicator that is pulled low by an internal switch when charging is complete and is otherwise high-impedance."
      },
      {
        "number": "7",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain charge-status output that is pulled low while the charger is charging and is otherwise high-impedance."
      },
      {
        "number": "8",
        "name": "CE",
        "type": "input",
        "description": "Chip enable input: a logic high puts the charger in normal operation and a logic low disables charging; it can be driven by TTL or CMOS levels (VCE-H min 1.2 V, VCE-L max 0.6 V)."
      }
    ],
    "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 SOP-8 package drawing on page 11 has no extractable pin text. The pin list comes from the pin-fu; The datasheet says the package is shared between SOP-8 and MSOP-8 and does not separately state a pi; Pin types for PROG (passive), BAT (power_out) and TEMP (input) are inferred from the functional desc"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0571,
        "at": "2026-10-18T18:19:51"
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      "datasheet": {
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        "pages": 12,
        "sha256": "0becf3da9cad23ad",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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  "metadata": {
    "specs": {
      "Manufacturer": "Winsok Semicon",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "characteristics": {
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        {
          "name": "Storage temperature range",
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          "unit": "℃",
          "min": -65,
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          "max": 125,
          "conditions": "",
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        },
        {
          "name": "Lead temperature (soldering, 10 s)",
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          "name": "Maximum junction temperature",
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          "name": "Operating ambient temperature range",
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          "name": "Supply current, standby (charge terminated)",
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          "conditions": "Shutdown mode (RPROG not connected, Vcc<VBAT or VCC<VUV); full operating temperature range (•)",
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        {
          "name": "Float (constant) output voltage",
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          "typ": 4.2,
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          "conditions": "0℃≤TA≤85℃; full operating temperature range (•)",
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          "name": "BAT pin charge current, RPROG=2.4K",
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          "conditions": "RPROG=2.4K, current mode, VBAT=4.0V; full operating temperature range (•)",
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          "name": "BAT pin charge current, RPROG=1.33K",
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          "typ": 950,
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          "name": "BAT pin current, standby",
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          "max": -5,
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          "name": "BAT pin current, shutdown",
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          "conditions": "Shutdown mode (RPROG not connected); printed ±1 typ, ±2 max, full operating temperature range (•)",
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        {
          "name": "BAT pin current, sleep",
          "symbol": "IBAT",
          "kind": "electrical",
          "unit": "uA",
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          "typ": -1,
          "max": -2,
          "conditions": "Sleep mode, Vcc=0V",
          "source_page": 4,
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        {
          "name": "Trickle charge current",
          "symbol": "ITRIKL",
          "kind": "electrical",
          "unit": "mA",
          "min": 80,
          "typ": 100,
          "max": 110,
          "conditions": "VBAT<VTRIKL, RPROG=1.33K; full operating temperature range (•)",
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          "name": "Trickle charge threshold voltage",
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          "kind": "electrical",
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          "min": 2.8,
          "typ": 2.9,
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          "conditions": "RPROG=1.33K, VBAT rising",
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        {
          "name": "Trickle charge threshold hysteresis",
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          "unit": "mV",
          "min": 60,
          "typ": 80,
          "max": 100,
          "conditions": "RPROG=1.33K",
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        {
          "name": "VCC undervoltage lockout threshold",
          "symbol": "VUV",
          "kind": "electrical",
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          "typ": 3.7,
          "max": 3.9,
          "conditions": "Vcc low to high; full operating temperature range (•)",
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        {
          "name": "VCC undervoltage lockout hysteresis",
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          "name": "PROG pin voltage",
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          "conditions": "RPROG=1.33K, current mode; full operating temperature range (•)",
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          "name": "VCC-VBAT lockout threshold (rising)",
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          "conditions": "Vcc low to high",
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          "name": "C/10 termination current, RPROG=2.4K",
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          "unit": "mA",
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          "name": "C/10 termination current, RPROG=1.33K",
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        {
          "name": "Recharge threshold voltage",
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          "min": 100,
          "typ": 150,
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          "name": "Junction temperature in thermal limit mode",
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          "min": null,
          "typ": 145,
          "max": null,
          "conditions": "Thermal limit mode",
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        {
          "name": "Power FET on-resistance (between Vcc and BAT)",
          "symbol": "RON",
          "kind": "electrical",
          "unit": "mΩ",
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          "typ": 650,
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          "name": "Soft-start time",
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          "name": "Recharge comparator filter time",
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          "kind": "timing",
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          "conditions": "VBAT high to low",
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          "kind": "timing",
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          "min": 0.8,
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          "conditions": "IBAT降至ICHR/10一下",
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          "name": "PROG pin pull-up current",
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          "typ": 2,
          "max": null,
          "conditions": "",
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        {
          "name": "Thermal resistance, junction to ambient (assumed in example)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 125,
          "max": null,
          "conditions": "Assumed value in worked thermal example (5V adapter, 3.75V battery); not a tabulated spec",
          "source_page": 10,
          "source": "datasheet"
        }
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