main
Ray Set visibility: public 59502f0 6h ago
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805
{
  "schema_version": 1,
  "type": "component",
  "slug": "bl8851",
  "title": "BL8851",
  "brief": "BL(Shanghai Belling) AC-DC Controllers & Regulators, SOT-23-6. 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 ics",
    "bl8851",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BL8851",
    "manufacturer": "BL(Shanghai Belling)",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Power Management ICs",
    "subcategory": "AC-DC Controllers & Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6b1b048892d3c095cda6559e19db38c1.pdf",
    "parts": {
      "symbol": "bl8851.kicad_sym",
      "footprint": "bl8851.kicad_mod",
      "model_3d": "bl8851-hero.glb",
      "model_3d_plain": "bl8851-etched.glb",
      "model_3d_step": "bl8851-etched.step",
      "model_3d_step_plain": "bl8851.step",
      "lbr": "bl8851.lbr"
    },
    "distributor_links": {
      "lcsc": "C314014"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T21:06:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the controller."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Feedback input whose voltage level, together with the current-sense signal at pin 4, sets the PWM duty cycle; open-loop voltage 3.9 to 4.2 V and absolute maximum -0.3 to 7 V."
      },
      {
        "number": "3",
        "name": "RT",
        "type": "input",
        "description": "Dual-function pin connected through an NTC resistor to ground for over-temperature shutdown/latch control, or through a Zener to VDD for adjustable over-voltage protection; absolute maximum -0.3 to 7 V."
      },
      {
        "number": "4",
        "name": "CS",
        "type": "input",
        "description": "Current sense input with 220 ns leading edge blanking and 0.75 V internal current limit threshold; absolute maximum -0.3 to 7 V."
      },
      {
        "number": "5",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply input, recommended 10 to 30 V, absolute maximum 40 V DC, with UVLO on at 9 V typ and off at 15.3 V typ."
      },
      {
        "number": "6",
        "name": "GATE",
        "type": "output",
        "description": "Totem-pole gate driver output for the external power MOSFET, clamped at 15 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 7,
        "cost_usd": 0.1071,
        "at": "2026-10-22T21:06:23"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/6b1b048892d3c095cda6559e19db38c1.pdf",
        "pages": 7,
        "sha256": "0553dcea6b39e677",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bl8851.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bl8851-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "668e1286019c9bac34f97a87def0bd8606c9df1fad9ec710cb8fb6944e3a36b4",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL(Shanghai Belling)",
      "Package": "SOT-23-6",
      "Category": "Power Management ICs",
      "Pins": "6"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0553dcea6b39e6776eb6c25c933642ca523d6abe0c86ab3f37e4396846d704c0",
      "rows": [
        {
          "name": "VDD DC Supply Voltage",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VDD DC Clamp Current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "FB Input Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Sense Input Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "RT Input Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -20,
          "typ": null,
          "max": 150,
          "conditions": "Min/Max",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 160,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VDD Supply Voltage",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 10,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Ambient Temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -20,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VDD Start up Current",
          "symbol": "Istartup",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 5,
          "max": 20,
          "conditions": "VDD=11V, measure leakage current into VDD",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operation Current",
          "symbol": "I_VDD_Operation",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "VFB=3V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VDD Under Voltage Lockout Enter",
          "symbol": "UVLO(ON)",
          "kind": "electrical",
          "unit": "V",
          "min": 8,
          "typ": 9,
          "max": 10,
          "conditions": "Enter",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VDD Under Voltage Lockout Exit",
          "symbol": "UVLO(OFF)",
          "kind": "electrical",
          "unit": "V",
          "min": 14.3,
          "typ": 15.3,
          "max": 16.3,
          "conditions": "Exit (Recovery)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Pull-up PMOS active",
          "symbol": "Vpull-up",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 13,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VDD clamp voltage",
          "symbol": "Vdd_clamp",
          "kind": "electrical",
          "unit": "V",
          "min": 30,
          "typ": 32,
          "max": 34,
          "conditions": "Ivdd=10mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Over voltage protection voltage",
          "symbol": "OVP(ON)",
          "kind": "electrical",
          "unit": "V",
          "min": 24,
          "typ": 26,
          "max": 28,
          "conditions": "CS=0V,FB=3V, Ramp up VDD until gate clock is off",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Latch release voltage",
          "symbol": "Vlatch_release",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VFB Open Loop Voltage",
          "symbol": "VFB_Open",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3.9,
          "max": 4.2,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "PWM input gain",
          "symbol": "Avcs",
          "kind": "electrical",
          "unit": "V/V",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "ΔVFB/ΔVCS",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum duty cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 75,
          "typ": 80,
          "max": 85,
          "conditions": "VDD=14V,VFB=3V,VCS=0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Threshold enter green mode",
          "symbol": "Vref_green",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Threshold exit burst mode",
          "symbol": "Vref_burst_H",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.275,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Threshold enter burst mode",
          "symbol": "Vref_burst_L",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.175,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "FB pin short circuit current",
          "symbol": "IFB_Short",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.4,
          "max": null,
          "conditions": "Short FB pin to GND and measure current",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Limiting FB Threshold Voltage",
          "symbol": "VTH_PL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3.7,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power limiting Debounce Time",
          "symbol": "TD_PL",
          "kind": "timing",
          "unit": "mSec",
          "min": 80,
          "typ": 88,
          "max": 96,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "FB Input Impedance",
          "symbol": "ZFB_IN",
          "kind": "electrical",
          "unit": "Kohm",
          "min": null,
          "typ": 4,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Soft start time",
          "symbol": "",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": 4,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Leading edge blanking time",
          "symbol": "T_blanking",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 220,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Sense Input Impedance",
          "symbol": "ZSENSE_IN",
          "kind": "electrical",
          "unit": "Kohm",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Over Current Detection and Control Delay",
          "symbol": "TD_OC",
          "kind": "timing",
          "unit": "nSec",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "From Over Current Occurs till the Gatedrive output start to turn off",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Internal Current Limiting Threshold Voltage",
          "symbol": "VTH_OC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.75,
          "max": null,
          "conditions": "FB=3.3V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "CS voltage clamper",
          "symbol": "Vocp_clamper",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.9,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Normal Oscillation Frequency",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "KHZ",
          "min": 60,
          "typ": 65,
          "max": 70,
          "conditions": "VDD=14V, FB=3V, CS=0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Frequency jittering",
          "symbol": "△f_OSC",
          "kind": "electrical",
          "unit": "%",
          "min": -4,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Shuffling frequency",
          "symbol": "F_shuffling",
          "kind": "electrical",
          "unit": "Hz",
          "min": null,
          "typ": 32,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Frequency Temperature Stability",
          "symbol": "△f_Temp",
          "kind": "temperature_coefficient",
          "unit": "%",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Frequency Voltage Stability",
          "symbol": "f_VDD",
          "kind": "voltage_coefficient",
          "unit": "%",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Burst Mode Base Frequency",
          "symbol": "F_Burst",
          "kind": "electrical",
          "unit": "KHZ",
          "min": null,
          "typ": 22,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output low level",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VDD=14V, Io=5mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output high level",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 6,
          "typ": null,
          "max": null,
          "conditions": "VDD=14V, Io=20mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output clamp voltage",
          "symbol": "V_clamp",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output rising time",
          "symbol": "T_r",
          "kind": "timing",
          "unit": "nS",
          "min": null,
          "typ": 175,
          "max": null,
          "conditions": "1V ~ 12V @ CL=1000pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output falling time",
          "symbol": "T_f",
          "kind": "timing",
          "unit": "nS",
          "min": null,
          "typ": 85,
          "max": null,
          "conditions": "12V ~ 1V @ CL=500pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output current of RT pin",
          "symbol": "IRT",
          "kind": "electrical",
          "unit": "uA",
          "min": 95,
          "typ": 100,
          "max": 105,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Threshold voltage for OTP",
          "symbol": "VOTP",
          "kind": "electrical",
          "unit": "V",
          "min": 0.95,
          "typ": 1,
          "max": 1.05,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "OTP debounce time",
          "symbol": "Td_OTP",
          "kind": "timing",
          "unit": "Cycle",
          "min": null,
          "typ": 32,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Float voltage at RT pin",
          "symbol": "VRT_FL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2.3,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "External OVP threshold voltage",
          "symbol": "Vth_OVP",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 4,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bl8851"
  ],
  "discovery_pitch": "BL8851 (BL(Shanghai Belling)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bl8851.kicad_sym",
    "bl8851.kicad_mod",
    "bl8851.glb",
    "bl8851.step",
    "bl8851.lbr",
    "docs/hero.png",
    "docs/bl8851-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bl8851-hero.glb",
    "bl8851-hero.overlay.json",
    "bl8851-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}