component
LTC3890EUH#TRPBF
Public Made by Adomby adom
Analog Devices DC-DC Converters, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "LTC3890EUH#TRPBF",
"brief": "Analog Devices DC-DC Converters, QFN-32-EP(5x5). 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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"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",
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"lbr": "ltc3890euh-trpbf.lbr"
},
"distributor_links": {
"lcsc": "C580811",
"digikey": "505-LTC3890EUH#TRPBFTR-ND",
"mouser": "584-LTC3890EUH#TRPBF"
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"distributor_check": {
"checked_at": "2026-10-18T01:57:17Z",
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"status": "found",
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},
"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": {
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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 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"
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"pages": 40,
"sha256": "9b8b6319a8785ee5",
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
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"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-18",
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},
{
"file": "ltc3890euh-trpbf-etched.step",
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},
"metadata": {
"specs": {
"Manufacturer": "Analog Devices",
"Package": "QFN-32-EP(5x5)",
"Category": "Power Management (PMIC)",
"Pins": "33"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "9b8b6319a8785ee55e58d9a08f6f0fe05fd800b966c579eb53dbdc494844567b",
"rows": [
{
"name": "Input Supply Voltage (VIN) absolute maximum",
"symbol": "VIN",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 65,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Topside Driver Voltage",
"symbol": "BOOST1, BOOST2",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 71,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Switch Voltage",
"symbol": "SW1, SW2",
"kind": "absolute_maximum",
"unit": "V",
"min": -5,
"typ": null,
"max": 65,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "Topside Driver Voltage (boost to switch)",
"symbol": "(BOOST1-SW1), (BOOST2-SW2)",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
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},
{
"name": "Run Pin Voltage",
"symbol": "RUN1, RUN2",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 8,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Maximum Current Sourced into Pin",
"symbol": "",
"kind": "absolute_maximum",
"unit": "µA",
"min": null,
"typ": null,
"max": 100,
"conditions": "Source > 8V",
"source_page": 2,
"source": "datasheet"
},
{
"name": "SENSE+ / SENSE– Voltages",
"symbol": "SENSE1+, SENSE2+, SENSE1–, SENSE2–",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 28,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "PLLIN/MODE, INTVCC Voltages",
"symbol": "PLLIN/MODE, INTVCC",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "EXTVCC Voltage",
"symbol": "EXTVCC",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 14,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "ITH / VFB Voltages",
"symbol": "ITH1, ITH2, VFB1, VFB2",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "PGOOD Voltages",
"symbol": "PGOOD1, PGOOD2",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "TRACK/SS Voltages",
"symbol": "TRACK/SS1, TRACK/SS2",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Storage Temperature Range",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Operating Junction Temperature Range (LTC3890E)",
"symbol": "TJ",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "LTC3890E, LTC3890I",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Thermal Resistance, Junction to Ambient",
"symbol": "θJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 34,
"max": null,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Input Supply Operating Voltage Range",
"symbol": "VIN",
"kind": "recommended_operating",
"unit": "V",
"min": 4,
"typ": null,
"max": 60,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Regulated Feedback Voltage (all grades)",
"symbol": "VFB1,2",
"kind": "electrical",
"unit": "V",
"min": 0.792,
"typ": 0.8,
"max": 0.808,
"conditions": "ITH1,2 Voltage = 1.2V; –40°C to 85°C, All Grades",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Regulated Feedback Voltage (E/I, over operating junction temperature range)",
"symbol": "VFB1,2",
"kind": "electrical",
"unit": "V",
"min": 0.788,
"typ": 0.8,
"max": 0.812,
"conditions": "ITH1,2 Voltage = 1.2V; LTC3890E, LTC3890I; over operating junction temperature range",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Feedback Current",
"symbol": "IFB1,2",
"kind": "electrical",
"unit": "nA",
"min": -50,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Reference Voltage Line Regulation",
"symbol": "VREFLNREG",
"kind": "electrical",
"unit": "%/V",
"min": null,
"typ": 0.002,
"max": 0.02,
"conditions": "VIN = 4.5V to 60V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Output Voltage Load Regulation (ΔITH 1.2V to 0.7V)",
"symbol": "VLOADREG",
"kind": "electrical",
"unit": "%",
"min": null,
"typ": 0.01,
"max": 0.1,
"conditions": "Measured in Servo Loop, ΔITH Voltage = 1.2V to 0.7V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Output Voltage Load Regulation (ΔITH 1.2V to 2V)",
"symbol": "VLOADREG",
"kind": "electrical",
"unit": "%",
"min": null,
"typ": -0.01,
"max": -0.1,
"conditions": "Measured in Servo Loop, ΔITH Voltage = 1.2V to 2V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input DC Supply Current, Pulse-Skipping or Forced Continuous (one channel on)",
"symbol": "IQ",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": null,
"max": 1.3,
"conditions": "RUN1 = 5V and RUN2 = 0V, VFB1 = 0.83V or RUN1 = 0V and RUN2 = 5V, VFB2 = 0.83V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input DC Supply Current, Pulse-Skipping or Forced Continuous (both channels on)",
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"kind": "electrical",
"unit": "mA",
"min": null,
"typ": null,
"max": 2,
"conditions": "RUN1,2 = 5V, VFB1,2 = 0.83V (No Load)",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input DC Supply Current, Sleep Mode (one channel on)",
"symbol": "IQ",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 50,
"max": 75,
"conditions": "RUN1 = 5V and RUN2 = 0V, VFB1 = 0.83V (No Load) or RUN1 = 0V and RUN2 = 5V, VFB2 = 0.83V (No Load)",
"source_page": 3,
"source": "datasheet"
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