HE4057A

{
  "schema_version": 1,
  "type": "component",
  "slug": "he4057a",
  "title": "HE4057A",
  "brief": "HEERMICR Battery Management, SOT-23-6. 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)",
    "he4057a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "HE4057A",
    "manufacturer": "HEERMICR",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590239351549964288",
    "parts": {
      "symbol": "he4057a.kicad_sym",
      "footprint": "he4057a.kicad_mod",
      "model_3d": "he4057a-hero.glb",
      "model_3d_plain": "he4057a-etched.glb",
      "model_3d_step": "he4057a-etched.step",
      "model_3d_step_plain": "he4057a.step",
      "lbr": "he4057a.lbr"
    },
    "distributor_links": {
      "lcsc": "C5123430"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T08:49:49Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain charge-status output that is pulled low while the charger is charging (VCHRG at most 0.5 V at 5 mA sink) and is high-impedance in other states, flashing when no battery is connected."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the charger, to be connected to system ground."
      },
      {
        "number": "3",
        "name": "BAT",
        "type": "power_out",
        "description": "Battery positive connection that delivers the charge current and regulates the battery to the float voltage of 4.20 V (4.16 V to 4.25 V); reverse-battery protection is provided."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Input supply pin, rated 4.50 V to 7.0 V (5.0 V typical) with an absolute maximum of 9 V, and the charger enters shutdown when VCC falls below the 3.8 V UVLO threshold."
      },
      {
        "number": "5",
        "name": "STDBY",
        "type": "output",
        "description": "Open-drain charge-complete output that is pulled low when the battery charge cycle ends (VSTDBY at most 0.5 V at 5 mA sink) and is high-impedance otherwise."
      },
      {
        "number": "6",
        "name": "PROG",
        "type": "passive",
        "description": "Programmable charge-current pin where a resistor to GND sets the constant charge current (charge current = 1000 × 1.0 V / RPROG, e.g. 100 mA at 10 kΩ and 500 mA at 2 kΩ), with an absolute maximum of 7 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: Pin types BAT (power_out) and PROG (passive) are my KiCad class judgments; the datasheet does not as; Pin numbering comes from the pin table on page 2 (1 CHRG, 2 GND, 3 BAT, 4 VCC, 5 STDBY, 6 PROG). The; Descriptions for CHRG and STDBY combine the page-2 pin names with behaviour from the page-5 text and"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0134,
        "at": "2026-10-18T08:48:25"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590239351549964288",
        "pages": 7,
        "sha256": "b0d0ec02032b8453",
        "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",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "HEERMICR",
      "Package": "SOT-23-6",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
    },
    "characteristics": {
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      "datasheet_sha256": "b0d0ec02032b8453239f8f951f608ffc845da9191139b598575fd9e3407845b3",
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          "name": "输入电源电压",
          "symbol": "VCC",
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          "name": "输出浮充电压",
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          "name": "电池反接模式电流",
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          "name": "涓流充电电流",
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          "name": "涓流充电门限电压",
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        {
          "name": "涓流充电迟滞电压",
          "symbol": "VTRHYS",
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          "name": "VCC 欠压锁定电压",
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        {
          "name": "VCC 欠压锁定迟滞电压",
          "symbol": "VUVHYS",
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          "unit": "mV",
          "min": 150,
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          "max": 250,
          "conditions": "VCC下降",
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        {
          "name": "手动关断阈值电压（上升）",
          "symbol": "VMSD",
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          "unit": "V",
          "min": 1.1,
          "typ": 1.2,
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        {
          "name": "手动关断阈值电压（下降）",
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          "name": "VCC-VBAT 锁闭电压（上升）",
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          "name": "VCC-VBAT 锁闭电压（下降）",
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          "unit": "mV",
          "min": 5,
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        {
          "name": "C/10 终止电流门限 RPROG=10K",
          "symbol": "ITERM",
          "kind": "electrical",
          "unit": "mA/ mA",
          "min": null,
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          "max": 0.12,
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          "name": "C/10 终止电流门限 RPROG=2K",
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        {
          "name": "PROG 引脚电压",
          "symbol": "VPROG",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": 1,
          "max": 1.1,
          "conditions": "恒流模式，RPROG=10K",
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          "name": "CHRG 端输出低电平",
          "symbol": "VCHRG",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.35,
          "max": 0.5,
          "conditions": "ICHRG=5mA",
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        {
          "name": "STDBY 端输出低电平",
          "symbol": "VSTDBY",
          "kind": "electrical",
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          "max": 0.5,
          "conditions": "ISTDBY=5mA",
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        {
          "name": "再充电电池门限电压",
          "symbol": "VRECHG",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 100,
          "max": 150,
          "conditions": "VFLOAT-VRECHG",
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          "name": "再充电延时时间",
          "symbol": "tRECHG",
          "kind": "electrical",
          "unit": "ms",
          "min": 0.8,
          "typ": 1.8,
          "max": 4,
          "conditions": "VBAT由高到低",
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          "name": "充电终止延时时间",
          "symbol": "tTERM",
          "kind": "electrical",
          "unit": "ms",
          "min": 0.6,
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          "max": 3,
          "conditions": "IBAT降至 ICHG/10 以下",
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          "name": "输入电压",
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          "conditions": "",
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          "name": "PROG 端电压",
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          "name": "工作温度范围",
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          "min": -40,
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          "name": "焊接温度 (Soldering, 10sec)",
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          "name": "ESD (Machine Mode)",
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          "name": "CHRG、STDBY 端电压",
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          "name": "热阻 θJC",
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          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 135,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "IPROG PROG 端上拉电流",
          "symbol": "IPROG",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 2,
          "max": null,
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