LTC3890EUH#TRPBF

{
  "slug": "ltc3890euh-trpbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices DC-DC Converters, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "ltc3890euh#trpbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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    "README.md",
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    "ltc3890euh-trpbf.step",
    "ltc3890euh-trpbf.lbr",
    "docs/hero.png",
    "docs/ltc3890euh-trpbf-datasheet.pdf",
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    "ltc3890euh-trpbf-hero.overlay.json",
    "ltc3890euh-trpbf-etched.glb"
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  "component": {
    "mpn": "LTC3890EUH#TRPBF",
    "manufacturer": "Analog Devices",
    "package": "QFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8564894491498356736",
    "parts": {
      "symbol": "ltc3890euh-trpbf.kicad_sym",
      "footprint": "ltc3890euh-trpbf.kicad_mod",
      "model_3d": "ltc3890euh-trpbf-hero.glb",
      "model_3d_plain": "ltc3890euh-trpbf-etched.glb",
      "model_3d_step": "ltc3890euh-trpbf-etched.step",
      "model_3d_step_plain": "ltc3890euh-trpbf.step",
      "lbr": "ltc3890euh-trpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C580811",
      "digikey": "505-LTC3890EUH#TRPBFTR-ND",
      "mouser": "584-LTC3890EUH#TRPBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T01:57:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "505-LTC3890EUH#TRPBFTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "584-LTC3890EUH#TRPBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SENSE1–",
        "type": "input",
        "description": "(-) input to the controller 1 differential current comparator; it supplies current to the comparator when greater than INTVCC - 0.5V."
      },
      {
        "number": "2",
        "name": "FREQ",
        "type": "input",
        "description": "Frequency control for the internal VCO: tying to GND forces 350kHz, tying to INTVCC forces 535kHz, and a resistor to GND programs 50kHz to 900kHz; an internal 20µA pull-up develops the control voltage, and the absolute maximum is -0.3V to INTVCC."
      },
      {
        "number": "3",
        "name": "PHASMD",
        "type": "input",
        "description": "Phase selector control: GND sets TG2 and CLKOUT 180° and 60° out of phase with TG1, INTVCC sets 240° and 120°, and floating sets 180° and 90°."
      },
      {
        "number": "4",
        "name": "CLKOUT",
        "type": "output",
        "description": "Output clock for daisy-chaining other controller ICs for additional driver phases, with levels swinging from INTVCC to ground."
      },
      {
        "number": "5",
        "name": "PLLIN/MODE",
        "type": "input",
        "description": "External synchronization input to the phase detector and light-load mode select: ground selects Burst Mode operation, INTVCC forces continuous operation, and a voltage above 1.2V and below INTVCC - 1.3V selects pulse-skipping."
      },
      {
        "number": "6",
        "name": "SGND",
        "type": "power_in",
        "description": "Small-signal ground common to both controllers, which must be routed separately from high-current grounds to the negative terminals of the CIN capacitors."
      },
      {
        "number": "7",
        "name": "RUN1",
        "type": "input",
        "description": "Digital run control for controller 1: forcing below 1.16V shuts down controller 1, and forcing both RUN1 and RUN2 below 0.7V shuts down the whole LTC3890 (about 14µA quiescent current); absolute maximum is 8V."
      },
      {
        "number": "8",
        "name": "RUN2",
        "type": "input",
        "description": "Digital run control for controller 2: forcing below 1.20V shuts down controller 2; absolute maximum is 8V."
      },
      {
        "number": "9",
        "name": "SENSE2–",
        "type": "input",
        "description": "(-) input to the controller 2 differential current comparator; it supplies current to the comparator when greater than INTVCC - 0.5V."
      },
      {
        "number": "10",
        "name": "SENSE2+",
        "type": "input",
        "description": "(+) input to the controller 2 differential current comparator, normally connected to DCR sensing networks or current sense resistors; absolute maximum for the SENSE pins is 28V."
      },
      {
        "number": "11",
        "name": "VFB2",
        "type": "input",
        "description": "Remotely sensed feedback input for controller 2 from an external resistive divider across the output, regulated to 0.8V; absolute maximum is 6V."
      },
      {
        "number": "12",
        "name": "ITH2",
        "type": "passive",
        "description": "Error amplifier output and switching regulator compensation point for controller 2, where the current comparator trip point rises with this voltage; absolute maximum is 6V."
      },
      {
        "number": "13",
        "name": "TRACK/SS2",
        "type": "passive",
        "description": "External tracking and soft-start input for controller 2, which regulates VFB2 to the lower of 0.8V or this pin voltage; it has a 1µA internal pull-up and a capacitor to ground sets the ramp time."
      },
      {
        "number": "14",
        "name": "PGOOD2",
        "type": "output",
        "description": "Open-drain power good output for controller 2, pulled to ground when VFB2 is not within ±10% of its set point; absolute maximum is 6V."
      },
      {
        "number": "15",
        "name": "TG2",
        "type": "output",
        "description": "High-current gate drive for the top N-channel MOSFET of controller 2, a floating driver with a swing of INTVCC - 0.5V superimposed on SW2."
      },
      {
        "number": "16",
        "name": "SW2",
        "type": "output",
        "description": "Switch node connection for controller 2 to its inductor."
      },
      {
        "number": "17",
        "name": "BOOST2",
        "type": "power_out",
        "description": "Bootstrapped supply for the controller 2 topside floating driver, with a capacitor between BOOST2 and SW2 and a Schottky diode from BOOST2 to INTVCC; the swing is from INTVCC to VIN + INTVCC."
      },
      {
        "number": "18",
        "name": "BG2",
        "type": "output",
        "description": "High-current gate drive for the bottom synchronous N-channel MOSFET of controller 2, swinging from ground to INTVCC."
      },
      {
        "number": "19",
        "name": "INTVCC",
        "type": "power_out",
        "description": "Output of the internal linear LDO that powers the driver and control circuits; it must be decoupled to power ground with at least 4.7µF of ceramic or low-ESR capacitance and must not be used for any other purpose."
      },
      {
        "number": "20",
        "name": "EXTVCC",
        "type": "power_in",
        "description": "External power input to the internal LDO feeding INTVCC, which takes over from the VIN-powered LDO when EXTVCC exceeds 4.7V; do not float it or exceed 14V."
      },
      {
        "number": "21",
        "name": "PGND",
        "type": "power_in",
        "description": "Driver power ground, connected to the sources of the bottom synchronous N-channel MOSFETs and the negative terminal of CIN."
      },
      {
        "number": "22",
        "name": "VIN",
        "type": "power_in",
        "description": "Main supply pin, operating from 4V to 60V (65V absolute maximum), with a bypass capacitor tied between this pin and signal ground."
      },
      {
        "number": "23",
        "name": "BG1",
        "type": "output",
        "description": "High-current gate drive for the bottom synchronous N-channel MOSFET of controller 1, swinging from ground to INTVCC."
      },
      {
        "number": "24",
        "name": "BOOST1",
        "type": "power_out",
        "description": "Bootstrapped supply for the controller 1 topside floating driver, with a capacitor between BOOST1 and SW1 and a Schottky diode from BOOST1 to INTVCC; the swing is from INTVCC to VIN + INTVCC."
      },
      {
        "number": "25",
        "name": "SW1",
        "type": "output",
        "description": "Switch node connection for controller 1 to its inductor."
      },
      {
        "number": "26",
        "name": "TG1",
        "type": "output",
        "description": "High-current gate drive for the top N-channel MOSFET of controller 1, a floating driver with a swing of INTVCC - 0.5V superimposed on SW1."
      },
      {
        "number": "27",
        "name": "PGOOD1",
        "type": "output",
        "description": "Open-drain power good output for controller 1, pulled to ground when VFB1 is not within ±10% of its set point; absolute maximum is 6V."
      },
      {
        "number": "28",
        "name": "ILIM",
        "type": "input",
        "description": "Current comparator sense voltage range select: tying to SGND, floating, or tying to INTVCC sets the maximum current sense threshold to one of three levels for both comparators."
      },
      {
        "number": "29",
        "name": "TRACK/SS1",
        "type": "passive",
        "description": "External tracking and soft-start input for controller 1, which regulates VFB1 to the lower of 0.8V or this pin voltage; it has a 1µA internal pull-up and a capacitor to ground sets the ramp time."
      },
      {
        "number": "30",
        "name": "ITH1",
        "type": "passive",
        "description": "Error amplifier output and switching regulator compensation point for controller 1, where the current comparator trip point rises with this voltage; absolute maximum is 6V."
      },
      {
        "number": "31",
        "name": "VFB1",
        "type": "input",
        "description": "Remotely sensed feedback input for controller 1 from an external resistive divider across the output, regulated to 0.8V; absolute maximum is 6V."
      },
      {
        "number": "32",
        "name": "SENSE1+",
        "type": "input",
        "description": "(+) input to the controller 1 differential current comparator, normally connected to DCR sensing networks or current sense resistors; absolute maximum for the SENSE pins is 28V."
      },
      {
        "number": "33",
        "name": "SGND",
        "type": "power_in",
        "description": "Exposed pad, internally SGND, which must be soldered to the PCB for rated thermal performance (θJA = 34°C/W, TJMAX = 150°C)."
      }
    ],
    "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 top-view pin diagram text is scrambled in this extract, so pin numbers were taken from the PIN F; Electrical types are my KiCad-class judgments, not stated by the datasheet: INTVCC and BOOST pins as; The MPN LTC3890EUH#TRPBF maps to the UH 32-lead 5x5 QFN package, consistent with the package hint, s"
        ],
        "pages_sent": 10,
        "cost_usd": 0.1058,
        "at": "2026-10-18T01:55:03"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8564894491498356736",
        "pages": 40,
        "sha256": "9b8b6319a8785ee5",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "ltc3890euh-trpbf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ltc3890euh-trpbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "sha256": "6b2f0536bfd0975dd0987c818bf4b27f0406d6d81ea5b655716b7ae3ee4ed81c",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}