DS6521AFD33

{
  "schema_version": 1,
  "type": "component",
  "slug": "ds6521afd33",
  "title": "DS6521AFD33",
  "brief": "DSTECH Battery Management, DFN-10L(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management (pmic)",
    "ds6521afd33",
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  "component": {
    "mpn": "DS6521AFD33",
    "manufacturer": "DSTECH",
    "package": "DFN-10L(3x3)",
    "pin_count": 11,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590910605140713472",
    "parts": {
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      "lbr": "ds6521afd33.lbr"
    },
    "distributor_links": {
      "lcsc": "C5884241"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T09:26:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "error"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "TS",
        "type": "input",
        "description": "Connects to the battery-pack NTC thermistor (10K or 100K at 25°C) against RTS pulled up to VIN; tying TS directly to GND disables temperature sensing."
      },
      {
        "number": "2",
        "name": "ISET",
        "type": "passive",
        "description": "Programs the fast-charge current: an external resistor from ISET to GND sets ICHG (ICHG = VISET/RISET × 1000, with VISET = 1 V; charge current range 50 mA to 1 A)."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the charger."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply; the datasheet recommends 4.5 V to 24 V, with input overvoltage protection at 6.0 V (rising)."
      },
      {
        "number": "5",
        "name": "VCC",
        "type": "power_out",
        "description": "Internal 5 V regulator output; a 0.1 µF to 1 µF capacitor to ground is recommended."
      },
      {
        "number": "6",
        "name": "IMIN",
        "type": "passive",
        "description": "Programs the charge termination current: an external resistor from IMIN to GND sets ITERM (5 mA to 100 mA range, ITERM = KT/RIMIN with KT = 605); when floating, ITERM = 1/10 of ICHG."
      },
      {
        "number": "7",
        "name": "BAT",
        "type": "power_out",
        "description": "Connects to the battery (may also connect the system load); a bypass capacitor of 10 µF to 22 µF is recommended."
      },
      {
        "number": "8",
        "name": "TEM",
        "type": "output",
        "description": "Open-drain termination indicator: low (FET on) when charge current is below the termination current ITEM, open when it is above."
      },
      {
        "number": "9",
        "name": "CHG",
        "type": "output",
        "description": "Open-drain charge status output: low (FET on) while charging, open when not charging, in OVP or UVLO, or when charging is complete."
      },
      {
        "number": "10",
        "name": "EN",
        "type": "input",
        "description": "Chip enable input; the datasheet gives a rising threshold VIH of 1.5 V and a falling threshold VIL of 0.4 V."
      },
      {
        "number": "11",
        "name": "PGND",
        "type": "power_in",
        "description": "Exposed pad, the chip substrate; leave floating or connect directly to ground."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "primary_model": "claude-haiku-5-5",
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "at": "2026-10-19T09:24:32"
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        "total": 11,
        "described": 11,
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  "metadata": {
    "specs": {
      "Manufacturer": "DSTECH",
      "Package": "DFN-10L(3x3)",
      "Category": "Power Management (PMIC)",
      "Pins": "11"
    },
    "characteristics": {
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          "symbol": "VIN",
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        {
          "name": "引脚焊锡温度",
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          "unit": "°C",
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          "min": -60,
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        {
          "name": "ESD HBM",
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        {
          "name": "DFN3x3-10L 封装热阻",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
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          "max": null,
          "conditions": "TA = 25°C, DSTECH EVB board (Note 2)",
          "source_page": 4,
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        {
          "name": "UVLO 阈值电压 / 过压保护",
          "symbol": "VOVP",
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          "min": null,
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          "name": "输入过压保护迟滞电压",
          "symbol": "VOVP_HYS",
          "kind": "electrical",
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          "name": "输入电源电流（充电模式）",
          "symbol": "IQA",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
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          "name": "输入待机电流",
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          "unit": "μA",
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        {
          "name": "反接电池电流 BAT 端子流入电流",
          "symbol": "IRBAT",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
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          "conditions": "VBAT = -4.2V",
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          "name": "使能输入电流",
          "symbol": "IEN",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
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          "max": 100,
          "conditions": "VEN = 5V",
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          "name": "使能阈值电压 高电平",
          "symbol": "VIH",
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          "name": "使能阈值电压 低电平",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
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          "max": null,
          "conditions": "EN Falling",
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        {
          "name": "电池输出电压 Type A",
          "symbol": "VBAT",
          "kind": "electrical",
          "unit": "V",
          "min": 4.16,
          "typ": 4.2,
          "max": 4.24,
          "conditions": "ICHG = 25mA",
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        {
          "name": "再充电电池电压 Type A",
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          "min": null,
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          "conditions": "CHG Low to Open",
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          "name": "快速充电电流",
          "symbol": "ICHG",
          "kind": "electrical",
          "unit": "mA",
          "min": 50,
          "typ": null,
          "max": 1000,
          "conditions": "RISET = KΩ",
          "source_page": 5,
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        {
          "name": "快速充电电流精度 (ICHG > 100mA)",
          "symbol": "ICHG",
          "kind": "electrical",
          "unit": "%",
          "min": -10,
          "typ": null,
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          "conditions": "ICHG > 100mA",
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        {
          "name": "快速充电电流精度 (ICHG < 100mA)",
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        {
          "name": "预充电流",
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          "min": null,
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          "name": "截止充电电流",
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          "min": 5,
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          "conditions": "RIMIN = KΩ",
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        {
          "name": "截止电流延迟时间",
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          "typ": 16.7,
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          "name": "温度调节阈值限制",
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          "unit": "°C",
          "min": null,
          "typ": 125,
          "max": null,
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          "name": "热关断温度",
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          "unit": "°C",
          "min": null,
          "typ": 155,
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