ME2149FM5G

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  "type": "component",
  "slug": "me2149fm5g",
  "title": "ME2149FM5G",
  "brief": "MICRONE DC-DC Converters, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
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    "mpn": "ME2149FM5G",
    "manufacturer": "MICRONE",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5be1d70c5f390659fa7abfd1a99a70cd.pdf",
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    "distributor_links": {
      "lcsc": "C236786"
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    "pins": [
      {
        "number": "1",
        "name": "CE",
        "type": "input",
        "description": "Chip enable / shutdown pin. Active-high enable: VSH ≥ 0.75V enables the oscillator, VSL ≤ 0.2-0.3V shuts down the IC. Shutdown current (ISSS) typ. 0.02µA, max 0.5µA at VCE=0V."
      },
      {
        "number": "2",
        "name": "LX",
        "type": "output",
        "description": "Switching node - drain of the internal N-channel power MOSFET, connected to the external inductor/Schottky-diode node of the boost converter. Absolute max LX voltage -0.3 to VDD+0.3V; peak LX current ±4A. SOT23-5 recommended load ≤1A."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. Return for internal power MOSFET source, control logic and reference."
      },
      {
        "number": "4",
        "name": "VDD",
        "type": "power_in",
        "description": "IC power supply pin. Operating range 2.5V ≤ VDD ≤ 6V for stable operation; start-up guaranteed from 0.9V (IOUT=1mA). Absolute maximum -0.3 to 6.5V. Bypass with 0.1µF ceramic close to pin."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback voltage input to the internal error amplifier. Regulated to VFB = 1.25V typ (1.225-1.275V, ±2%). Set output with external divider R1/R2 from VOUT to GND."
      }
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      "pins": {
        "total": 5,
        "described": 5,
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        "refuses_to_fabricate": true
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    "pin1": {
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      "at": [
        -1.1375,
        -0.95
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      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-5@sha256:455a3f7c3e5eb5b8",
      "mark": "drawn"
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        "extents_mm": [
          2.8,
          2.9,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "checked": "2026-10-07",
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  "metadata": {
    "specs": {
      "Manufacturer": "MICRONE",
      "Package": "SOT-23-5",
      "Category": "PMIC",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
        {
          "name": "Feedback voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 1.225,
          "typ": 1.25,
          "max": 1.275,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
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          "unit": "V",
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          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operation start voltage",
          "symbol": "VST",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.9,
          "conditions": "IOUT=1mA",
          "source_page": 5,
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        {
          "name": "Operation holding voltage",
          "symbol": "VHLD",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": null,
          "max": null,
          "conditions": "IOUT=1mA, measured by decreasing VIN voltage gradually",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Current consumption during shutdown",
          "symbol": "ISSS",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.02,
          "max": 0.5,
          "conditions": "VCE=0V",
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        },
        {
          "name": "Feedback voltage temperature coefficient",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "ppm/℃",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "Ta=-25-85℃",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Oscillation frequency",
          "symbol": "Fosc",
          "kind": "electrical",
          "unit": "MHz",
          "min": 0.8,
          "typ": 1,
          "max": 1.2,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "Shutdown pin input voltage (oscillation on)",
          "symbol": "VSH",
          "kind": "electrical",
          "unit": "V",
          "min": 0.75,
          "typ": null,
          "max": null,
          "conditions": "Measured the oscillation at LX pin",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown pin input voltage (oscillation stop, VOUT≥1.5V)",
          "symbol": "VSL1",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "Judged the stop of oscillation at LX pin; VOUT≥1.5V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown pin input voltage (oscillation stop, VOUT<1.5V)",
          "symbol": "VSL2",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "Judged the stop of oscillation at LX pin; VOUT<1.5V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown pin input current",
          "symbol": "ISH",
          "kind": "electrical",
          "unit": "μA",
          "min": -0.1,
          "typ": null,
          "max": 0.1,
          "conditions": "VCE=VFB(S)×0.95",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Current consumption 1",
          "symbol": "ISS1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 4,
          "max": null,
          "conditions": "VFB=VFB(S)× 0.95",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Current consumption 2",
          "symbol": "ISS2",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 25,
          "max": null,
          "conditions": "VFB=1.5V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Max. duty ratio",
          "symbol": "MAXDUTY",
          "kind": "electrical",
          "unit": "﹪",
          "min": null,
          "typ": 78,
          "max": null,
          "conditions": "VFB=VFB(S)× 0.95",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "PWM/PFM switching duty ratio",
          "symbol": "PFMDUTY",
          "kind": "electrical",
          "unit": "﹪",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "VFB=VFB(S)× 1.5, no load",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Soft start time",
          "symbol": "tss",
          "kind": "timing",
          "unit": "mS",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "Efficiency",
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          "kind": "electrical",
          "unit": "﹪",
          "min": null,
          "typ": 90,
          "max": null,
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        {
          "name": "VDD pin voltage",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "LX pin voltage (upper limit VDD+0.3)",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
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        {
          "name": "CE pin voltage (upper limit VDD+0.3)",
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          "min": -0.3,
          "typ": null,
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        {
          "name": "LX pin current",
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          "unit": "mA",
          "min": -4000,
          "typ": null,
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          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Power dissipation (SOT23-5)",
          "symbol": "Pd",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "SOT23-5 package",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
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          "kind": "recommended_operating",
          "unit": "℃",
          "min": -25,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
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        {
          "name": "Storage temperature range",
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          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage for stable output voltage and oscillation frequency",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": 6,
          "conditions": "Note 1 and note 4: start-up from VDD=0.9V; 2.5V≦VDD<6V to stabilize output voltage and oscillation frequency",
          "source_page": 2,
          "source": "datasheet"
        }
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      "mpn": "ME2149FM5G",
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  "updated_at": "2026-09-25T01:34:25.415Z"
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