TL494IN

{
  "schema_version": 1,
  "type": "component",
  "slug": "tl494in",
  "title": "TL494IN",
  "brief": "HGSEMI DC-DC Converters, DIP-16. 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)",
    "tl494in",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TL494IN",
    "manufacturer": "HGSEMI",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8615629852196155392",
    "parts": {
      "symbol": "tl494in.kicad_sym",
      "footprint": "tl494in.kicad_mod",
      "model_3d": "tl494in-hero.glb",
      "model_3d_plain": "tl494in-etched.glb",
      "model_3d_step": "tl494in-etched.step",
      "model_3d_step_plain": "tl494in.step",
      "lbr": "tl494in.lbr"
    },
    "distributor_links": {
      "lcsc": "C20613255",
      "digikey": "296-10194-5-ND",
      "mouser": "595-TL494IN"
    },
    "distributor_check": {
      "checked_at": "2026-10-15T20:59:53Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-10194-5-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TL494IN",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "INPP",
        "type": "input",
        "description": "Error amplifier 1 non-inverting input, with input voltage range of -0.3 V to Vcc-2.0 V."
      },
      {
        "number": "2",
        "name": "INNP",
        "type": "input",
        "description": "Error amplifier 1 inverting input, with input voltage range of -0.3 V to Vcc-2.0 V."
      },
      {
        "number": "3",
        "name": "INfc",
        "type": "input",
        "description": "PWM comparator feedback input, with recommended feedback current of 0.3 mA maximum and a zero-duty input threshold of 4 to 4.5 V."
      },
      {
        "number": "4",
        "name": "DTC",
        "type": "input",
        "description": "Dead-time control input, with zero-duty threshold of 3 to 3.3 V and input bias current of -2.0 to -10 µA for 0 to 5.25 V input."
      },
      {
        "number": "5",
        "name": "CT",
        "type": "passive",
        "description": "Oscillator timing capacitor connection, recommended 0.00047 to 10 µF."
      },
      {
        "number": "6",
        "name": "RT",
        "type": "passive",
        "description": "Oscillator timing resistor connection, recommended 1.8 to 500 kΩ."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "8",
        "name": "C1",
        "type": "passive",
        "description": "Output transistor 1 collector, rated up to 40 V and 200 mA."
      },
      {
        "number": "9",
        "name": "E1",
        "type": "output",
        "description": "Output transistor 1 emitter, sources or sinks up to 200 mA."
      },
      {
        "number": "10",
        "name": "E2",
        "type": "output",
        "description": "Output transistor 2 emitter, sources or sinks up to 200 mA."
      },
      {
        "number": "11",
        "name": "C2",
        "type": "passive",
        "description": "Output transistor 2 collector, rated up to 40 V and 200 mA."
      },
      {
        "number": "12",
        "name": "Vcc",
        "type": "power_in",
        "description": "Supply voltage input, recommended 7.0 to 40 V (absolute maximum 40 V)."
      },
      {
        "number": "13",
        "name": "OUTcon",
        "type": "input",
        "description": "Output control input selecting push-pull or single-ended operation, with input current of 0.2 to 3.5 mA at Voc=Vref."
      },
      {
        "number": "14",
        "name": "Vref",
        "type": "power_out",
        "description": "5 V reference output (4.75 to 5.25 V) with recommended output current up to 10 mA."
      },
      {
        "number": "15",
        "name": "INNP",
        "type": "input",
        "description": "Error amplifier 2 inverting input, with input voltage range of -0.3 V to Vcc-2.0 V."
      },
      {
        "number": "16",
        "name": "INPP",
        "type": "input",
        "description": "Error amplifier 2 non-inverting input, with input voltage range of -0.3 V to Vcc-2.0 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: The pin-function table is internally inconsistent: pin 15 is labeled 反相输入 (inverting) but its symbol; The Ve(sat) table row gives only two values (1.5 and 2.5 V) without an explicit typ/max label, so th; Some unit prefixes are missing in the extracted text (for example the DTC bias current and CT values"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0473,
        "at": "2026-10-15T20:59:25"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8615629852196155392",
        "pages": 12,
        "sha256": "99e3d620b7c82bbd",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tl494in.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "17a30b1f0ab3fd5384a1231e3c63c394888d5b952c542a8c189e023ed3467464",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tl494in-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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          19.177,
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "cbfc7c277049dca3fb92f91c2a34f1f395096f5375b732c9bf215415cad685ca",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "DIP-16",
      "Category": "Power Management (PMIC)",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "99e3d620b7c82bbd95ba4b158315ae460c2c9cc2fe019a76827f736d3c6ee4b4",
      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "Vcc",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 7,
          "typ": 15,
          "max": 40,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector output voltage",
          "symbol": "Vc1;Vc2",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector output current (single transistor)",
          "symbol": "Ic1;Ic2",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Amplifier input voltage",
          "symbol": "Vin",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Feedback current",
          "symbol": "Ifb",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reference output current",
          "symbol": "Iref",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Timing resistance",
          "symbol": "RT",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": 1.8,
          "typ": 30,
          "max": 500,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Timing capacitance",
          "symbol": "CT",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 0.00047,
          "typ": 0.001,
          "max": 10,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillation frequency",
          "symbol": "fosc",
          "kind": "recommended_operating",
          "unit": "kHz",
          "min": 1,
          "typ": 40,
          "max": 200,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
          "symbol": "Vcc",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 7,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector output voltage",
          "symbol": "Vc1;Vc2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector output current (single transistor)",
          "symbol": "Ic1;Ic2",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Amplifier input voltage",
          "symbol": "Vin",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "Tamb≤45℃",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature (TL494I)",
          "symbol": "Tamb",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "TL494I",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "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 10s",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "V",
          "min": 4.75,
          "typ": 5,
          "max": 5.25,
          "conditions": "Io=1.0mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage drift over temperature",
          "symbol": "Vref/T",
          "kind": "temperature_coefficient",
          "unit": "%",
          "min": null,
          "typ": 1.3,
          "max": 2.6,
          "conditions": "Tamb from MIN to MAX",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "Reg line",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 2,
          "max": 25,
          "conditions": "Vcc=7.0V~40V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "Reg load",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 2,
          "max": 15,
          "conditions": "Io=1.0mA~10mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Short-circuit output current",
          "symbol": "Isc",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 32,
          "max": null,
          "conditions": "Vref=0V, Tamb=25℃",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Collector off-state leakage current",
          "symbol": "Ic(off)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 2,
          "max": 100,
          "conditions": "Vcc=40V; Vce=40V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Emitter off-state leakage current",
          "symbol": "Ie(off)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": -100,
          "max": null,
          "conditions": "Vcc=40V; Vc=40V; Ve=0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter saturation voltage (common emitter)",
          "symbol": "Vc(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.1,
          "max": 1.3,
          "conditions": "Ve=0V; Ic=200mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Emitter-follower saturation voltage",
          "symbol": "Ve(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.5,
          "max": 2.5,
          "conditions": "Vc=15V; Ie=-200mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output control pin current",
          "symbol": "IOCH",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.2,
          "max": 3.5,
          "conditions": "Voc=Vref",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage rise time (common emitter)",
          "symbol": "Tr",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 100,
          "max": 200,
          "conditions": "Test figure 3",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage rise time (emitter follower)",
          "symbol": "Tr",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 100,
          "max": 200,
          "conditions": "Test figure 4",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage fall time (common emitter)",
          "symbol": "Tf",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 25,
          "max": 100,
          "conditions": "Test figure 3",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage fall time (emitter follower)",
          "symbol": "Tf",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 40,
          "max": 100,
          "conditions": "Test figure 4",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input offset voltage",
          "symbol": "Vio",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 2,
          "max": 10,
          "conditions": "Vo (pin3)=2.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input offset current",
          "symbol": "Iio",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 5,
          "max": 250,
          "conditions": "Vo (pin3)=2.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input bias current",
          "symbol": "IIB",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": 1,
          "conditions": "Vo (pin3)=2.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input common-mode voltage range",
          "symbol": "VICR",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Vcc=7.0V~40V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Open-loop voltage gain",
          "symbol": "GVOL",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 70,
          "max": 95,
          "conditions": "Vo=0.5V~3.5V; RL=2.0k; Vo=3.0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Common-mode rejection ratio",
          "symbol": "CMRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 65,
          "max": 90,
          "conditions": "Vcc=40V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output sink current (error amplifier)",
          "symbol": "Io-",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.3,
          "max": 0.7,
          "conditions": "Vo (pin3)=0.7V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output source current (error amplifier)",
          "symbol": "Io+",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": -2,
          "max": -4,
          "conditions": "Vo (pin3)=3.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "PWM comparator input threshold voltage",
          "symbol": "VTH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 4,
          "max": 4.5,
          "conditions": "Zero duty cycle",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input sink current (PWM comparator)",
          "symbol": "II-",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.3,
          "max": 0.7,
          "conditions": "V (pin3)=0.7V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Dead-time control input bias current",
          "symbol": "IIB(DT)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": -2,
          "max": -10,
          "conditions": "Vin=0V~5.25V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input threshold voltage (pin4), zero duty cycle",
          "symbol": "VTH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3,
          "max": 3.3,
          "conditions": "Zero duty cycle",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input threshold voltage (pin4), maximum duty cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "",
          "min": null,
          "typ": 0,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Standard frequency offset",
          "symbol": "fosc",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "RT=30k; CT=0.001µF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Frequency variation with supply voltage",
          "symbol": "fosc/V",
          "kind": "voltage_coefficient",
          "unit": "%",
          "min": null,
          "typ": 0.1,
          "max": null,
          "conditions": "Vcc=7.0V~40V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Frequency variation with temperature",
          "symbol": "fosc/T",
          "kind": "temperature_coefficient",
          "unit": "%",
          "min": null,
          "typ": 12,
          "max": null,
          "conditions": "RT=12k; CT=0.01µF; Tamb=Tlow~Thigh",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-current input (start control)",
          "symbol": "ISTL",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": -25,
          "max": -200,
          "conditions": "V (pin3)=0.4V",
          "source_page": 5,
          "source": "datasheet"
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