main
Ray Set visibility: public 1ce5422
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{
  "schema_version": 1,
  "type": "component",
  "slug": "bd94121f-ge2",
  "title": "BD94121F-GE2",
  "brief": "ROHM Semicon LED Drivers, SOP-18-300mil. 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",
    "display modules - led drivers - display drivers",
    "bd94121f-ge2",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BD94121F-GE2",
    "manufacturer": "ROHM Semicon",
    "package": "SOP-18-300mil",
    "pin_count": 18,
    "category": "Display Modules / LED Drivers / Display Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/9874d46d8ace7b9d1c0ac3c5eb3b1e33.pdf",
    "parts": {
      "symbol": "bd94121f-ge2.kicad_sym",
      "footprint": "bd94121f-ge2.kicad_mod",
      "model_3d": "bd94121f-ge2-hero.glb",
      "model_3d_plain": "bd94121f-ge2.glb",
      "model_3d_step": "bd94121f-ge2-etched.step",
      "model_3d_step_plain": "bd94121f-ge2.step",
      "lbr": "bd94121f-ge2.lbr"
    },
    "distributor_links": {
      "lcsc": "C694092"
    },
    "distributor_check": {
      "checked_at": "2026-11-13T15:19:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "IC supply pin with built-in UVLO, normal operating range 9.0 V to 18.0 V (typ), absolute rating -0.3 to +20 V, bypass with a ceramic capacitor greater than 0.1 µF to GND."
      },
      {
        "number": "2",
        "name": "STB",
        "type": "input",
        "description": "Power ON/OFF control: IC is on when STB is high (2.0 V to VCC) and off when low (-0.3 to +0.8 V), keep STB below VCC and below 4 V if applied before VCC, absolute rating -0.3 to +20 V."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground for the internal IC circuits, recommended to be kept independent from PGND to reduce switching noise influence."
      },
      {
        "number": "4",
        "name": "RT",
        "type": "output",
        "description": "Drive frequency setting pin, basic frequency is set by resistor RRT to GND (20 to 200 kΩ recommended), frequency modulation range is set by RADJ between RT and FB, absolute rating -0.3 to +5.5 V."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "output",
        "description": "Error amplifier output for LED current and LED voltage feedback, the capacitors to IS and VS (1500 pF to 0.01 µF) set phase compensation and start-up time, absolute rating -0.3 to +5.5 V."
      },
      {
        "number": "6",
        "name": "IS",
        "type": "input",
        "description": "Error amplifier input for LED current feedback, IS threshold voltage 1 is 0.466 V to 0.488 V at VADIM = 2.1 V, absolute rating -0.3 to +5.5 V."
      },
      {
        "number": "7",
        "name": "VS",
        "type": "power_in",
        "description": "Error amplifier input for LED open-voltage feedback, VS threshold voltage is 1.212 V to 1.288 V (1.25 V typ), absolute rating -0.3 to +5.5 V."
      },
      {
        "number": "8",
        "name": "PWMCMP",
        "type": "input",
        "description": "PWM comparator input for brightness adjustment, N1 and N2 outputs stop when PWMCMP is low and output maximum duty when high, absolute rating -0.3 to +5.5 V."
      },
      {
        "number": "9",
        "name": "CP",
        "type": "output",
        "description": "Timer latch setting pin, 1 µA (typ) is charged into the connected capacitor in an abnormal case and the IC latches after output stops when CP exceeds 2 V (typ), absolute rating -0.3 to +5.5 V."
      },
      {
        "number": "10",
        "name": "PWMIN",
        "type": "input",
        "description": "PWM signal input for burst brightness adjustment, high level 1.8 V to 5.0 V, low level -0.3 V to +0.8 V, input frequency 60 to 500 Hz, absolute rating -0.3 to +5.5 V."
      },
      {
        "number": "11",
        "name": "ADIM",
        "type": "input",
        "description": "DC signal input for analog dimming, input voltage range 0 to 5 V with linearity specified from 0.5 V to 2.1 V, absolute rating -0.3 to +5.5 V."
      },
      {
        "number": "12",
        "name": "SS",
        "type": "output",
        "description": "Soft start and COMPSD timer setting pin, 2 µA (typ) is charged into the connected capacitor during start-up, recommended capacitance 0.01 to 0.1 µF, absolute rating -0.3 to +5.5 V."
      },
      {
        "number": "13",
        "name": "FAIL",
        "type": "output",
        "description": "Error indication output, normal is L and error is open, FAIL ON-resistance is 100 Ω (typ), absolute rating -0.3 to +5.5 V."
      },
      {
        "number": "14",
        "name": "COMPSD",
        "type": "input",
        "description": "Abnormal overvoltage detection pin, output operation stops and the IC latches after 2 clocks when abnormality is detected, COMPSD detection voltage is 3.88 V to 4.12 V (4.00 V typ), absolute rating -0.3 to +5.5 V."
      },
      {
        "number": "15",
        "name": "PWM2DC",
        "type": "input",
        "description": "Pulse-to-DC conversion pin, the pulse signal is converted to a flat DC level through the internal 100 kΩ resistor and the capacitor on ADIM, input frequency range 0.09 to 30 kHz, absolute rating -0.3 to +20 V."
      },
      {
        "number": "16",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the external MOSFET drive circuit, to be kept independent from signal GND (pin 3), no numeric rating is given for this pin."
      },
      {
        "number": "17",
        "name": "N2",
        "type": "output",
        "description": "Output pin for the external FET drive circuit (channel N2), sink resistance 3.0 Ω (typ) and source resistance 9.0 Ω (typ), absolute rating -0.3 to +20 V."
      },
      {
        "number": "18",
        "name": "N1",
        "type": "output",
        "description": "Output pin for the external FET drive circuit (channel N1), sink resistance 3.0 Ω (typ) and source resistance 9.0 Ω (typ), absolute rating -0.3 to +20 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: Pin names, numbers and IN/OUT directions come from the Pin Description table (page 6) and match the ; Pin types follow the datasheet's IN/OUT column. Pins RT, FB, CP, SS and FAIL are timing, feedback or; The datasheet gives no absolute maximum rating for the power ground pin PGND, so no voltage limit is"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0958,
        "at": "2026-11-13T15:18:52"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/9874d46d8ace7b9d1c0ac3c5eb3b1e33.pdf",
        "pages": 27,
        "sha256": "896dcc4202743ab5",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "model_3d_generated": {
        "generator": "factory/gen_pkg3d.py",
        "family": "SOIC",
        "height_mm": 2.65,
        "height_basis": "family nominal (no datasheet A read)",
        "standoff_mm": 0.15,
        "standoff_basis": "family nominal (no datasheet A1 read)",
        "lead_width_mm": 0.36,
        "lead_width_basis": "default: 0.6 x pad width across the lead, at most 0.45 x pitch 1.27 mm; a tab 0.9 x its width (no datasheet b read)",
        "lead_thickness_mm": 0.2,
        "lead_thickness_basis": "default for pitch 1.27 mm, height 2.65 mm (no datasheet c read)"
      },
      "pins": {
        "total": 18,
        "described": 18,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bd94121f-ge2.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.51,
          11.515,
          2.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "950012158aef1628b65d6527831ae4502dd97c777e96d04adc9b8a00ba82c0dc",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bd94121f-ge2-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.51,
          11.515,
          2.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "0f891d85c96fc468d68d0e5a5aa6c23c44d0a480356600e668ce7cfac5a59947",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "ROHM Semicon",
      "Package": "SOP-18-300mil",
      "Category": "Display Modules / LED Drivers / Display Drivers",
      "Pins": "18"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "896dcc4202743ab512a26ef672c56b7b4737eb4e0f11de969d9ff990c31d7915",
      "rows": [
        {
          "name": "Supply Voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Terminal Voltage STB, PWM2DC, N2, N1",
          "symbol": "VSTB,VPWM2DC,VN2,VN1",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Terminal Voltage RT, FB, IS, VS, PWMCMP, CP, PWMIN, ADIM, SS, FAIL, COMPSD",
          "symbol": "VRT,VFB,VIS,VVS,VPWMCMP,VCP,VPWMIN,VADIM,VSS,VFAIL,VCOMPSD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation",
          "symbol": "Pd",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.69,
          "conditions": "Note 1: mounted on 1-layer 70.0mm x 70.0mm x 1.6mm board",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range",
          "symbol": "Topr",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "Tjmax",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation derating",
          "symbol": "Pd",
          "kind": "thermal",
          "unit": "mW/°C",
          "min": null,
          "typ": 5.5,
          "max": null,
          "conditions": "Derating for operation above Ta≥25°C (Note 1)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 9,
          "typ": null,
          "max": 18,
          "conditions": "Ta=-40°C to +85°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "PWMIN Input Frequency Range",
          "symbol": "fPWMIN",
          "kind": "recommended_operating",
          "unit": "Hz",
          "min": 60,
          "typ": null,
          "max": 500,
          "conditions": "Ta=-40°C to +85°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillation Frequency",
          "symbol": "fOUT",
          "kind": "recommended_operating",
          "unit": "kHz",
          "min": 30,
          "typ": null,
          "max": 300,
          "conditions": "Ta=-40°C to +85°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "PWM2DC Input Voltage Range",
          "symbol": "fPWM2DC",
          "kind": "recommended_operating",
          "unit": "kHz",
          "min": 0.09,
          "typ": null,
          "max": 30,
          "conditions": "Ta=-40°C to +85°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ADIM Input Voltage Range",
          "symbol": "VADIM",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 5,
          "conditions": "Ta=-40°C to +85°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ADIM Range with Linearity IS",
          "symbol": "VADIMLIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0.5,
          "typ": null,
          "max": 2.1,
          "conditions": "Ta=-40°C to +85°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "RT Connection Resistance",
          "symbol": "RRT",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": 20,
          "typ": null,
          "max": 200,
          "conditions": "External components recommended range, Ta=-40°C to +85°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "CP Connection Capacitance",
          "symbol": "CCP",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 0.01,
          "typ": null,
          "max": 2.2,
          "conditions": "Note 2: set above min per temperature and DC bias characteristic",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ADIM Connection Capacitance",
          "symbol": "CADIM",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 0.22,
          "typ": null,
          "max": 10,
          "conditions": "Note 2: set above min per temperature and DC bias characteristic",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "SS Connection Capacitance",
          "symbol": "CSS",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 0.01,
          "typ": null,
          "max": 0.1,
          "conditions": "Note 2: set above min per temperature and DC bias characteristic",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Circuit Current",
          "symbol": "ICC1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.3,
          "max": 5,
          "conditions": "fOUT=60kHz, VPWMCOMP=0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Circuit Current at Stand-by",
          "symbol": "ICC2",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0,
          "max": 20,
          "conditions": "VSTB=0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "STB Pin High Voltage",
          "symbol": "VSTH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "System ON",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "STB Pin Low Voltage",
          "symbol": "VSTL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 0.8,
          "conditions": "System OFF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VCC Operation Voltage",
          "symbol": "VVCCUVP",
          "kind": "electrical",
          "unit": "V",
          "min": 7.5,
          "typ": 8,
          "max": 8.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VCC UVLO Hysteresis",
          "symbol": "⊿VVCCUVP",
          "kind": "electrical",
          "unit": "V",
          "min": 0.37,
          "typ": 0.5,
          "max": 0.63,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "RT Terminal voltage",
          "symbol": "VRT",
          "kind": "electrical",
          "unit": "V",
          "min": 1.05,
          "typ": 1.5,
          "max": 1.95,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "PWMIN Pin High Voltage",
          "symbol": "VPWMINH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "PWMIN Pin Low Voltage",
          "symbol": "VPWMINL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Setting Current for Soft Start Timer and COMPSD Timer",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "µA",
          "min": 1.5,
          "typ": 2,
          "max": 2.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Soft Start Ended Voltage",
          "symbol": "VSSEND",
          "kind": "electrical",
          "unit": "V",
          "min": 2.3,
          "typ": 2.5,
          "max": 2.7,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Setting Voltage for COMPSD Timer",
          "symbol": "VSDON",
          "kind": "electrical",
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