VPC28C44

{
  "schema_version": 1,
  "type": "component",
  "slug": "vpc28c44",
  "title": "VPC28C44",
  "brief": "VPSC DC-DC Converters, SOP-8. 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)",
    "vpc28c44",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "VPC28C44",
    "manufacturer": "VPSC",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590907009024155648",
    "parts": {
      "symbol": "vpc28c44.kicad_sym",
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      "lbr": "vpc28c44.lbr"
    },
    "distributor_links": {
      "lcsc": "C7470599"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T22:49:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "passive",
        "description": "Error amplifier compensation pin where the external compensation network connects; the amplifier is internally current-limited, so forcing COMP to ground sets zero duty cycle."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Inverting input of the internal error amplifier (non-inverting input is internally fixed at 2.5 V), used for the voltage feedback loop, with the lead kept short for stability."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Primary-side current sense input tied to the sense resistor that terminates OUT conduction via the PWM comparator, with a typical maximum comparison threshold of 1 V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "passive",
        "description": "Oscillator timing pin: timing resistor RT connects from VREF and timing capacitor CT to GND, with f_OSC ≈ 1.6/(RT×CT) and RT never to be below 5 kΩ."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Analog ground and signal/power return for packages without a separate PGND pin, which should be kept separate from the high-current gate-drive return path."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "Push-pull gate drive output for directly driving an external MOSFET, sourcing and sinking up to 1 A peak, and held low when VDD is below the turn-on threshold; absolute maximum voltage to GND is 30 V."
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Controller bias supply input, with absolute maximum 30 V and recommended maximum 28 V, requiring a ~0.1 µF bypass capacitor close to the pin and an additional bulk capacitor at least 10× the main switch gate capacitance."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "5 V reference output derived from VDD, which requires a minimum 0.1 µF ceramic bypass capacitor placed as close to the pin as possible and additional bypass for any external load."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "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 datasheet's pin table (page 2) gives names, numbers and functions but no electrical pin type cla; COMP and RT/CT are typed as passive because they act as both sourcing/sinking or timing nodes; the d; The datasheet covers the VPCx8C4x family (VPC28C40–C45 and VPC38C40–C45) in one SOP8 package with on"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0879,
        "at": "2026-10-17T22:47:20"
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        "sha256": "41de8f28b106ea3c",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "checked": "2026-10-17",
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  "metadata": {
    "specs": {
      "Manufacturer": "VPSC",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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          "max": 30,
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        {
          "name": "Input current VDD",
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          "unit": "mA",
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          "name": "Output peak current",
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        {
          "name": "Reference voltage (VREF) to GND",
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        {
          "name": "Error amplifier output sink current",
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          "unit": "mA",
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        {
          "name": "Maximum operating junction temperature",
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          "unit": "℃",
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        {
          "name": "ESD HBM",
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          "unit": "V",
          "min": -3000,
          "typ": null,
          "max": 3000,
          "conditions": "per ESDA/JEDEC JS-001-2017; Zap 1 pulse, interval >=0.1S",
          "source_page": 3,
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        {
          "name": "ESD CDM",
          "symbol": "V(ESD)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -1000,
          "typ": null,
          "max": 1000,
          "conditions": "per ESDA/JEDEC JS-002-2014",
          "source_page": 3,
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        },
        {
          "name": "Input voltage",
          "symbol": "VVDD",
          "kind": "recommended_operating",
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          "typ": null,
          "max": 28,
          "conditions": "",
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        {
          "name": "FB reference voltage",
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          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": 2.5,
          "max": null,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Current sense input voltage",
          "symbol": "VCS",
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          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "",
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        {
          "name": "Supply current",
          "symbol": "IVDD",
          "kind": "recommended_operating",
          "unit": "mA",
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        {
          "name": "Average output current",
          "symbol": "IOUT",
          "kind": "recommended_operating",
          "unit": "mA",
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          "typ": null,
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          "conditions": "",
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        {
          "name": "Reference output source current",
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          "min": -20,
          "typ": null,
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          "name": "Oscillator frequency",
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          "unit": "MHz",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature (VPC28C4x)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 105,
          "conditions": "VPC28C4x",
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        {
          "name": "VREF reference voltage",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 4.9,
          "typ": 5,
          "max": 5.1,
          "conditions": "IVREF = 1 mA, TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VREF line regulation",
          "symbol": "∆VREF",
          "kind": "electrical",
          "unit": "mV",
          "min": 2,
          "typ": null,
          "max": 20,
          "conditions": "12≤VDD≤25V",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "VREF load regulation",
          "symbol": "∆VREF",
          "kind": "electrical",
          "unit": "mV",
          "min": 3,
          "typ": null,
          "max": 25,
          "conditions": "1mA≤IVREF≤20mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VREF temperature coefficient",
          "symbol": "∆VREF/∆T",
          "kind": "temperature_coefficient",
          "unit": "mV/℃",
          "min": 0.2,
          "typ": null,
          "max": 0.4,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VREF total output variation",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 4.82,
          "typ": null,
          "max": 5.18,
          "conditions": "线性、负载、温度",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VREF long-term stability",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": 5,
          "typ": null,
          "max": 25,
          "conditions": "1000 小时，TA= 125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VREF short-circuit current",
          "symbol": "ISC",
          "kind": "electrical",
          "unit": "mA",
          "min": -30,
          "typ": -50,
          "max": -70,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Oscillator frequency (set 1)",
          "symbol": "fOSC",
          "kind": "electrical",
          "unit": "kHz",
          "min": 49,
          "typ": 52,
          "max": 55,
          "conditions": "TA=25℃，RT=10kΩ，CT=3.3nF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Oscillator frequency (set 2)",
          "symbol": "fOSC",
          "kind": "electrical",
          "unit": "kHz",
          "min": 225,
          "typ": 250,
          "max": 275,
          "conditions": "TA=25℃，RT=6.2kΩ，CT=1.0nF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Oscillator frequency variation with voltage",
          "symbol": "∆fOSC/∆V",
          "kind": "voltage_coefficient",
          "unit": "%",
          "min": 0.2,
          "typ": null,
          "max": 1,
          "conditions": "12V≤VDD≤25V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Oscillator frequency variation with temperature",
          "symbol": "∆fOSC/∆T",
          "kind": "temperature_coefficient",
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          "min": 1,
          "typ": null,
          "max": 2.5,
          "conditions": "-40℃≤TA≤125℃",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "RT/CT discharge current at 25°C",
          "symbol": "Idischarge",
          "kind": "electrical",
          "unit": "mA",
          "min": 7.8,
          "typ": 8.3,
          "max": 8.8,
          "conditions": "TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "RT/CT discharge current over temperature",
          "symbol": "Idischarge",
          "kind": "electrical",
          "unit": "mA",
          "min": 7.6,
          "typ": null,
          "max": 9,
          "conditions": "-40℃≤TA≤125℃",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "FB reference voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 2.475,
          "typ": 2.5,
          "max": 2.525,
          "conditions": "VCOMP=2.5V, TA=25℃",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "FB input bias current",
          "symbol": "IFB",
          "kind": "electrical",
          "unit": "uA",
          "min": -1,
          "typ": null,
          "max": -0.1,
          "conditions": "VFB=5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier open-loop gain",
          "symbol": "AVOL",
          "kind": "electrical",
          "unit": "dB",
          "min": 70,
          "typ": null,
          "max": 95,
          "conditions": "2V≤VO≤4V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier unity-gain bandwidth",
          "symbol": "BW",
          "kind": "electrical",
          "unit": "MHz",
          "min": 0.7,
          "typ": null,
          "max": 1,
          "conditions": "TJ = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier PSRR",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": null,
          "max": 70,
          "conditions": "12V≤VDD≤25V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "COMP sink current",
          "symbol": "ICOMP(SNK)",
          "kind": "electrical",
          "unit": "mA",
          "min": 2,
          "typ": null,
          "max": 10,
          "conditions": "VFB=2.7V，VFB=1.1V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "COMP source current",
          "symbol": "ICOMP(SRC)",
          "kind": "electrical",
          "unit": "mA",
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          "typ": null,
          "max": -0.5,
          "conditions": "VFB=2.3V，VFB=5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VOUT high level (COMP)",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 5.4,
          "typ": 6,
          "max": 6.6,
          "conditions": "VFB=2.3V，RCOMP=15kΩ到地",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VOUT low level (COMP)",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": 0.1,
          "typ": null,
          "max": 0.5,
          "conditions": "VFB=2.7V，RCOMP=15kΩ到 8 脚",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Current sense gain",
          "symbol": "ACS",
          "kind": "electrical",
          "unit": "V/V",
          "min": 2.85,
          "typ": 3,
          "max": 3.15,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum comparator threshold voltage",
          "symbol": "VCS_th",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": 1,
          "max": 1.1,
          "conditions": "VFB＜2.4V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "CS input bias current",
          "symbol": "ICS",
          "kind": "electrical",
          "unit": "uA",
          "min": -2,
          "typ": null,
          "max": -0.1,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Delay from CS to OUT",
          "symbol": "tD",
          "kind": "timing",
          "unit": "nS",
          "min": 30,
          "typ": null,
          "max": 65,
          "conditions": "VCS jumps from 0 to 2V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "OUT on-resistance, low state",
          "symbol": "RDSON(OL)",
          "kind": "electrical",
          "unit": "Ω",
          "min": 4,
          "typ": null,
          "max": 10,
          "conditions": "ISINK=200mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "OUT on-resistance, high state",
          "symbol": "RDSON(OH)",
          "kind": "electrical",
          "unit": "Ω",
          "min": 8,
          "typ": null,
          "max": 16,
          "conditions": "ISOURCE=200mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "OUT pull-down current during UVLO",
          "symbol": "IOUT(SNK)",
          "kind": "electrical",
          "unit": "mA",
          "min": 100,
          "typ": null,
          "max": 300,
          "conditions": "VDD=6V，VOUT=1V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "OUT rise time",
          "symbol": "tr",
          "kind": "timing",
          "unit": "nS",
          "min": 30,
          "typ": null,
          "max": 55,
          "conditions": "TJ=25℃，CL=1nF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "OUT fall time",
          "symbol": "tf",
          "kind": "timing",
          "unit": "nS",
          "min": 20,
          "typ": null,
          "max": 40,
          "conditions": "TJ=25℃，CL=1nF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Start-up threshold voltage VDD(ON) (VPCx8C42/VPCx8C44)",
          "symbol": "VDD(ON)",
          "kind": "electrical",
          "unit": "V",
          "min": 13.6,
          "typ": 14.6,
          "max": 15.6,
          "conditions": "VPCx8C42/VPCx8C44",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "UVLO threshold voltage VDD(OFF) (VPCx8C42/VPCx8C44)",
          "symbol": "VDD(OFF)",
          "kind": "electrical",
          "unit": "V",
          "min": 7.7,
          "typ": 8.7,
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