EG1252E

{
  "schema_version": 1,
  "type": "component",
  "slug": "eg1252e",
  "title": "EG1252E",
  "brief": "EG Micro AC-DC Controllers And Regulators, 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)",
    "eg1252e",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "EG1252E",
    "manufacturer": "EG Micro",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8b9fd7a224cca39dd2ac5cb2b3e5f957.pdf",
    "parts": {
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      "lbr": "eg1252e.lbr"
    },
    "distributor_links": {
      "lcsc": "C48580023"
    },
    "distributor_check": {
      "checked_at": "2026-10-15T02:39:28Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Feedback input whose voltage, together with the current-sense signal, determines the PWM duty cycle; low-voltage port absolute maximum is 6 V."
      },
      {
        "number": "2",
        "name": "BO",
        "type": "input",
        "description": "Input voltage detection pin for input undervoltage protection, with a 1 V protection threshold and a 5 µA internal pull-down active below 1 V; low-voltage port absolute maximum is 6 V."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Current-sense input that senses the voltage across the current-sense resistor for cycle-by-cycle current limiting (Vcs(max) 0.92 to 1.08 V, 80 ns leading-edge blanking); low-voltage port absolute maximum is 6 V."
      },
      {
        "number": "4",
        "name": "RI",
        "type": "passive",
        "description": "Oscillator frequency-setting pin, where a resistor connected to GND sets the PWM frequency per Fosc(kHz) = 4300 / RI(kΩ); low-voltage port absolute maximum is 6 V."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "Gate drive output for the external power MOSFET, rated from -0.3 V to VCC+0.3 V, with output voltage clamped to 18 V when VCC exceeds 20 V."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply pin with an absolute maximum of 32 V and an internal zener clamp of 37 V at 10 mA (clamp current maximum 10 mA)."
      },
      {
        "number": "8",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start pin where an external capacitor is charged by an internal 10 µA source and discharged by the internal switch during undervoltage; low-voltage port absolute maximum is 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",
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin numbers and names come from the pin definition table on page 5 (pin 1 FB through pin 8 SS), whic; The datasheet is in Chinese. Descriptions are translated into English and condensed, and the figures; RI and SS are typed as passive because they connect to external timing resistor and soft-start capac"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0408,
        "at": "2026-10-15T02:39:13"
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        "pages": 11,
        "sha256": "8048eac31bb2b0b5",
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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": "EG Micro",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "8048eac31bb2b0b5d485f3e69ed25151249d8fa2f9c9d1154d4655c90f99e06f",
      "rows": [
        {
          "name": "VCC supply voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 32,
          "conditions": "-",
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        {
          "name": "VCC clamp current",
          "symbol": "Iclamp",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "-",
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          "source": "datasheet"
        },
        {
          "name": "Low-voltage pins FB, CS, RI, SS, BO",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
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          "source_page": 8,
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        },
        {
          "name": "OUT output pin",
          "symbol": "",
          "kind": "absolute_maximum",
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          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "-",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Ambient operating temperature",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -45,
          "typ": null,
          "max": 125,
          "conditions": "-",
          "source_page": 8,
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        },
        {
          "name": "Storage temperature",
          "symbol": "Tstr",
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          "unit": "℃",
          "min": -65,
          "typ": null,
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        },
        {
          "name": "Soldering temperature",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "T=10S",
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        {
          "name": "VCC start-up current",
          "symbol": "Istart",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 18,
          "max": 30,
          "conditions": "",
          "source_page": 8,
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        },
        {
          "name": "Operating current",
          "symbol": "IVCC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.3,
          "max": 3.5,
          "conditions": "VFB=3V,OUT=1nF",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Current-limit threshold",
          "symbol": "Vcs(max)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.92,
          "typ": 1,
          "max": 1.08,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Normal oscillation frequency",
          "symbol": "Fosx",
          "kind": "electrical",
          "unit": "KHz",
          "min": 92,
          "typ": 100,
          "max": 108,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Frequency shuffle range",
          "symbol": "△F(shuffle)/FOSC",
          "kind": "electrical",
          "unit": "%",
          "min": -4,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Maximum switch duty cycle",
          "symbol": "Dmax",
          "kind": "electrical",
          "unit": "%",
          "min": 43,
          "typ": 46,
          "max": 49,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "VCC turn-on threshold voltage",
          "symbol": "UVLO_OFF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 14,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "VCC turn-off threshold voltage",
          "symbol": "UVLO_ON",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 9.5,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "VCC zener clamp voltage",
          "symbol": "VCC_Clamp",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 37,
          "max": null,
          "conditions": "I= 10 mA",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "SS pin charge current",
          "symbol": "I_SS",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Soft-start complete threshold",
          "symbol": "V_SS",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3.5,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "BO pin protection voltage",
          "symbol": "VBO",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "BO internal pull-down current",
          "symbol": "IBO",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "VBO<1V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "FB open-circuit voltage",
          "symbol": "Vfb_Open",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 4.5,
          "max": null,
          "conditions": "",
          "source_page": 8,
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        },
        {
          "name": "FB short-circuit current",
          "symbol": "Ifb_Short",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.8,
          "max": null,
          "conditions": "FB 接地",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "PWM gain",
          "symbol": "AVcs",
          "kind": "electrical",
          "unit": "V/V",
          "min": null,
          "typ": 2.8,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Overload delay time",
          "symbol": "Td_PL",
          "kind": "electrical",
          "unit": "ms",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Leading-edge blanking time",
          "symbol": "Tleb",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 80,
          "max": null,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Overcurrent detection control delay",
          "symbol": "Td_OCP",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "GATE=1nF",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "RI open-circuit voltage",
          "symbol": "VRI_open",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Gate low output voltage",
          "symbol": "Vol",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.3,
          "max": null,
          "conditions": "Isink=-20mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Gate high output voltage",
          "symbol": "Voh",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 13,
          "max": null,
          "conditions": "Isource=20mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Maximum output clamp voltage",
          "symbol": "VO_clamp",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 17,
          "max": null,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output rise time",
          "symbol": "T_r",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 300,
          "max": null,
          "conditions": "GATE=10nF",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output fall time",
          "symbol": "T_f",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "GATE=10nF",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output source current",
          "symbol": "IO+",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "Vo=0V, PW≤10uS",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output sink current",
          "symbol": "IO-",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0.8,
          "max": null,
          "conditions": "Vo=15V, PW≤10uS",
          "source_page": 9,
          "source": "datasheet"
        }
      ]
    }
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  "author": {
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    "email": "[email protected]"
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