UC2845BN

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  "slug": "uc2845bn",
  "title": "UC2845BN",
  "brief": "lingxingic AC-DC Controllers And Regulators, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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    "power management (pmic)",
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  "component": {
    "mpn": "UC2845BN",
    "manufacturer": "lingxingic",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/43c225c0b5926398a715de3fdb66f6d2.pdf",
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    "distributor_links": {
      "lcsc": "C22390259",
      "digikey": "497-UC2845BN-ND",
      "mouser": "511-UC2845BN"
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    "distributor_check": {
      "checked_at": "2026-10-27T06:29:55Z",
      "source": "Component Ocean /api/assign-pns",
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    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "passive",
        "description": "Error amplifier output and compensation node, with the error amplifier sink current limited to 10 mA (Isink(EA)) in the absolute maximum ratings."
      },
      {
        "number": "2",
        "name": "VFB",
        "type": "input",
        "description": "Error amplifier inverting feedback input with input bias current of -0.1 uA typical and -2 uA maximum at VFB=5 V."
      },
      {
        "number": "3",
        "name": "ISENSE",
        "type": "input",
        "description": "Current sense input to the PWM comparator with a maximum input signal of 1 V (0.9 to 1.1 V) and a current sense gain of 3 V/V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "passive",
        "description": "Oscillator timing node where RT and CT set the switching frequency, tested at RT=10 kΩ and CT=3.3 nF, with operation up to 500 kHz."
      },
      {
        "number": "5",
        "name": "GROUND",
        "type": "power_in",
        "description": "Ground reference pin of the controller."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "Push-pull output stage that sources or sinks up to ±1 A to drive MOSFET power devices."
      },
      {
        "number": "7",
        "name": "Vi",
        "type": "power_in",
        "description": "Supply input with an absolute maximum of 30 V from a low-impedance source, tested at 15 V."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "Internal reference output of 5.00 V typical (4.90 to 5.10 V) at Io=1 mA, with short-circuit current of -30 to -180 mA."
      }
    ],
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        "at": "2026-10-27T06:29:46"
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      "Manufacturer": "lingxingic",
      "Package": "DIP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
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          "max": 5.1,
          "conditions": "Io=1mA",
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          "name": "Line regulation",
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          "min": null,
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          "name": "VREF temperature coefficient",
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          "kind": "temperature_coefficient",
          "unit": "mV/℃",
          "min": null,
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          "typ": 250,
          "max": 275,
          "conditions": "Tj=25℃ (RT=6.2kΩ，CT=1nF)",
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          "symbol": "∆fOSC/∆V",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.2,
          "max": 1,
          "conditions": "Vi=12V～25V",
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        {
          "name": "Frequency temperature stability",
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          "kind": "electrical",
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          "min": null,
          "typ": 0.55,
          "max": null,
          "conditions": "Tamb=-40～105℃ (注 4)",
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          "name": "Discharge current",
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          "unit": "mA",
          "min": 7.6,
          "typ": 8.3,
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          "conditions": "VOSC=2V; Tj=25℃，Tamb=-40～105℃",
          "source_page": 6,
          "source": "datasheet"
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          "kind": "electrical",
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          "min": 2.42,
          "typ": 2.5,
          "max": 2.58,
          "conditions": "VPIN1=2.5V",
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        {
          "name": "Error amplifier input bias current",
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          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": -0.1,
          "max": -2,
          "conditions": "VFB=5V",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Open loop voltage gain",
          "symbol": "AVOL",
          "kind": "electrical",
          "unit": "dB",
          "min": 65,
          "typ": 90,
          "max": null,
          "conditions": "2V≤Vo≤4V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Unity gain bandwidth",
          "symbol": "BW",
          "kind": "electrical",
          "unit": "MHz",
          "min": 0.7,
          "typ": 1,
          "max": null,
          "conditions": "Tj=25℃ (注 4)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier power supply rejection ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 70,
          "max": null,
          "conditions": "12V≤Vi≤25V",
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          "name": "Output sink current",
          "symbol": "IO",
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          "min": 2,
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          "conditions": "VPIN2=2.7V，VPIN1=1.1V",
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          "typ": 6.2,
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          "conditions": "VPIN2=2.3V；RL=15KΩ to ground",
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          "name": "Output low voltage",
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          "max": 1.1,
          "conditions": "VPIN2=2.7V；RL=15KΩ to PIN 8",
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          "max": 3.15,
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          "name": "Maximum input signal",
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          "max": 1.1,
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          "name": "Current sense power supply rejection ratio",
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          "name": "Propagation delay",
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          "max": null,
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          "source": "datasheet"
        },
        {
          "name": "UVLO latch saturation voltage",
          "symbol": "VOLS",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.1,
          "max": 1.1,
          "conditions": "Vi=6V，ISINK=1mA",
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          "max": 150,
          "conditions": "CL=1nF (注 4)",
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          "kind": "timing",
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          "max": 150,
          "conditions": "CL=1nF (注 4)",
          "source_page": 7,
          "source": "datasheet"
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        {
          "name": "UVLO turn-on threshold voltage (UC2845 variant)",
          "symbol": "VTH(ST)",
          "kind": "electrical",
          "unit": "V",
          "min": 7.8,
          "typ": 8.8,
          "max": 9.4,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
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        {
          "name": "UVLO minimum operating voltage (UC2845 variant)",
          "symbol": "VOPR(MIN)",
          "kind": "electrical",
          "unit": "V",
          "min": 7,
          "typ": 7.6,
          "max": 8.2,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Maximum duty cycle (UC2844/5 variant)",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 47,
          "typ": 48,
          "max": 50,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
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          "name": "Minimum duty cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0,
          "conditions": "",
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          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.3,
          "max": 0.9,
          "conditions": "",
          "source_page": 7,
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          "kind": "electrical",
          "unit": "mA",
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          "typ": 12,
          "max": 20,
          "conditions": "VPIN2=VPIN3=0V",
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          "name": "Zener voltage",
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          "kind": "electrical",
          "unit": "V",
          "min": 30,
          "typ": 36,
          "max": null,
          "conditions": "Ii=25mA",
          "source_page": 7,
          "source": "datasheet"
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    "uc2845bn-hero.glb",
    "uc2845bn-hero.overlay.json",
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  }
}