TD1484AMR

{
  "schema_version": 1,
  "type": "component",
  "slug": "td1484amr",
  "title": "TD1484AMR",
  "brief": "Techcode Semicon DC-DC Converters, SOIC-8-EP. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "td1484amr"
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  "component": {
    "mpn": "TD1484AMR",
    "manufacturer": "Techcode Semicon",
    "package": "SOIC-8-EP",
    "pin_count": 9,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/096f7e8086461727c5214922282be8c5.pdf",
    "parts": {
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      "lbr": "td1484amr.lbr"
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    "distributor_links": {
      "lcsc": "C193228"
    },
    "pins": [
      {
        "number": "1",
        "name": "BS",
        "type": "passive",
        "description": "High-Side Gate Drive Boost Input. Supplies drive voltage for the high-side N-channel MOSFET. Connect a 0.01µF or greater bootstrap capacitor from SW to BS to power the high-side switch."
      },
      {
        "number": "2",
        "name": "IN",
        "type": "power_in",
        "description": "Supply Voltage input. Operates from +4.75V to +20V unregulated input. An input decoupling capacitor (C1) is required at this pin to prevent large voltage spikes."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "power_out",
        "description": "Power Switching Output. The switching node that supplies power to the output. Connect the output LC filter from SW to the load; also ties to the bootstrap capacitor for the high-side switch."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Also connected internally to the exposed pad, which serves as a thermal radiator and must be soldered to the PCB ground plane."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback Input. Senses the output voltage via a resistive divider to regulate the output. Feedback threshold is 0.923V (typ)."
      },
      {
        "number": "6",
        "name": "COMP",
        "type": "passive",
        "description": "Compensation Node for the regulation control loop. Connect a series RC network from COMP to GND to compensate the loop; an additional shunt capacitor from COMP to GND may be required."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Enable Input. Digital input that turns the regulator on (high) or off (low). Threshold ~1.5V typ; pull up with a 100kΩ resistor for automatic startup."
      },
      {
        "number": "8",
        "name": "SS",
        "type": "passive",
        "description": "Soft-Start Control Input. A capacitor from SS to GND sets the soft-start period (0.1µF ≈ 15ms via ~6µA charge current). Leave unconnected to disable the soft-start feature."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "power_in",
        "description": "Exposed thermal pad on the bottom of the ESOP-8 package. Internally connected to GND and must be soldered to the PCB ground plane for proper thermal performance."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/096f7e8086461727c5214922282be8c5.pdf",
        "pages": 13,
        "sha256": "3605ce070377a87a",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm@sha256:5848244c5e72002e",
      "mark": "drawn"
    },
    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Techcode Semicon",
      "Package": "SOIC-8-EP",
      "Category": "PMIC",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "3605ce070377a87a",
      "rows": [
        {
          "name": "Shutdown Supply Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": 3,
          "conditions": "VEN=0V",
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        },
        {
          "name": "Supply Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.3,
          "max": 1.5,
          "conditions": "VFB=1.0V, VEN=2.0V",
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        },
        {
          "name": "Feedback Voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": 0.923,
          "max": 0.946,
          "conditions": "4.75V ≤ VIN ≤ 20V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High Side Switch Leakage Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "VEN=0V, VSW=0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Upper Switch Current Limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": 2.4,
          "typ": 3.4,
          "max": null,
          "conditions": "Minimum Duty Cycle",
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        },
        {
          "name": "EN Shutdown Threshold Voltage (VEN Rising)",
          "symbol": "VEN",
          "kind": "electrical",
          "unit": "V",
          "min": 1.1,
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          "max": 2,
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        },
        {
          "name": "EN Lockout Threshold Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.2,
          "typ": 2.5,
          "max": 2.7,
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        },
        {
          "name": "Input Under Voltage Lockout Threshold (VIN Rising)",
          "symbol": "",
          "kind": "electrical",
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          "min": 3.8,
          "typ": 4.1,
          "max": 4.4,
          "conditions": "VIN Rising",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 23,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Switch Node Voltage",
          "symbol": "VSW",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Printed as VIN+0.3 (expression, max not numeric)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 0.923,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "All Other Pins",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
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        },
        {
          "name": "Operating Junction Temperature",
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          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Operating Ambient Temperature",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 80,
          "conditions": "",
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        },
        {
          "name": "Storage Temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (Soldering)",
          "symbol": "TLEAD",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "Soldering, 10 sec",
          "source_page": 3,
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        },
        {
          "name": "ESD (HBM)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
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          "conditions": "HBM",
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        },
        {
          "name": "Junction to Ambient Resistance in Free Air",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "Free air",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction to Case Resistance in Free Air",
          "symbol": "RθJC",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "Free air",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Supply Voltage (operating range)",
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          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.75,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 2,
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        },
        {
          "name": "Output Voltage Adjustable Range",
          "symbol": "VOUT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0.923,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 1,
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        }
      ]
    }
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  "updated_at": "2026-09-25T09:33:02.346Z"
}