component
LT3751EFE#TRPBF
Public Made by Adomby adom
Analog Devices Power Management Specialized - PMIC, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "lt3751efe-trpbf",
"version": "0.1.0",
"type": "component",
"description": "Analog Devices Power Management Specialized - PMIC, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"power management ics",
"lt3751efe#trpbf",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
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"README.md",
"lt3751efe-trpbf.kicad_sym",
"lt3751efe-trpbf.kicad_mod",
"lt3751efe-trpbf.glb",
"lt3751efe-trpbf.step",
"lt3751efe-trpbf.lbr",
"docs/hero.png",
"docs/lt3751efe-trpbf-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"lt3751efe-trpbf-hero.glb",
"lt3751efe-trpbf-hero.overlay.json",
"lt3751efe-trpbf-etched.glb"
],
"component": {
"mpn": "LT3751EFE#TRPBF",
"manufacturer": "Analog Devices",
"package": "HTSSOP-20-EP",
"pin_count": 21,
"category": "Power Management ICs",
"subcategory": "Power Management Specialized - PMIC",
"datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/lt3751.pdf",
"parts": {
"symbol": "lt3751efe-trpbf.kicad_sym",
"footprint": "lt3751efe-trpbf.kicad_mod",
"model_3d": "lt3751efe-trpbf-hero.glb",
"model_3d_plain": "lt3751efe-trpbf-etched.glb",
"model_3d_step": "lt3751efe-trpbf-etched.step",
"model_3d_step_plain": "lt3751efe-trpbf.step",
"lbr": "lt3751efe-trpbf.lbr"
},
"distributor_links": {
"lcsc": "C671369",
"digikey": "LT3751EFE#TRPBFTR-ND",
"mouser": "584-LT3751EFE#TRPBF"
},
"distributor_check": {
"checked_at": "2026-10-31T09:27:20Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "LT3751EFE#TRPBFTR-ND",
"status": "found"
},
"mouser": {
"pn": "584-LT3751EFE#TRPBF",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "RVTRANS",
"type": "input",
"description": "Transformer supply sense pin; connect a resistor to the VTRANS supply (sized per Table 2), minimum VTRANS operating voltage is 4.75V."
},
{
"number": "2",
"name": "UVLO1",
"type": "input",
"description": "VTRANS undervoltage lockout pin that trips the FAULT latch low when VTRANS drops below 1.225V + 50µA • RUVLO1."
},
{
"number": "3",
"name": "OVLO1",
"type": "input",
"description": "VTRANS overvoltage lockout pin that trips the FAULT latch low when VTRANS rises above 1.225V + 50µA • ROVLO1."
},
{
"number": "4",
"name": "UVLO2",
"type": "input",
"description": "VCC undervoltage lockout pin that trips the FAULT latch low when VCC drops below 1.225V + 50µA • RUVLO2."
},
{
"number": "5",
"name": "OVLO2",
"type": "input",
"description": "VCC overvoltage lockout pin that trips the FAULT latch low when VCC rises above 1.225V + 50µA • ROVLO2."
},
{
"number": "6",
"name": "FAULT",
"type": "output",
"description": "Open-collector indication pin that turns on when VTRANS or VCC leaves the user-selected range or an internal UVLO occurs, stopping switching; needs a pull-up, limit current to 1mA."
},
{
"number": "7",
"name": "DONE",
"type": "output",
"description": "Open-collector indication pin that turns on when the target output voltage is reached or FAULT goes low; needs a pull-up, limit current to 1mA."
},
{
"number": "8",
"name": "CHARGE",
"type": "input",
"description": "Initiates a charge cycle or enables the part when driven above 1.5V, shutdown when below 0.3V; turn-on ramp 10ns to 10ms and not to be ramped directly with VCC."
},
{
"number": "9",
"name": "CLAMP",
"type": "input",
"description": "Gate driver clamp select: tie to VCC for the 5.6V clamp or to ground for the 10.5V clamp."
},
{
"number": "10",
"name": "FB",
"type": "input",
"description": "Feedback pin for low noise regulation, internally regulated to 1.22V with a resistive divider from the output; must not float, tie to divider or ground."
},
{
"number": "11",
"name": "CSN",
"type": "input",
"description": "Negative current sense pin; connect to the local RSENSE ground with a Kelvin connection, current limit is 106mV/RSENSE."
},
{
"number": "12",
"name": "CSP",
"type": "input",
"description": "Positive current sense pin connected to the NMOS source and sense resistor; current limit is 106mV/RSENSE in charge mode, reducible to a minimum of 11mV/RSENSE in regulation mode."
},
{
"number": "13",
"name": "VCC",
"type": "power_in",
"description": "Input supply pin that must be locally bypassed with an X5R or better ceramic capacitor; minimum operating voltage is 4.75V (24V maximum)."
},
{
"number": "14",
"name": "LVGATE",
"type": "output",
"description": "Low voltage gate pin tied to the NMOS gate when VCC is below 8V, or tied directly to VCC when VCC is above 8V."
},
{
"number": "15",
"name": "HVGATE",
"type": "output",
"description": "High voltage gate pin connected to the NMOS gate for all VCC voltages; the driver drives to within VCC - 2V each cycle."
},
{
"number": "16",
"name": "RBG",
"type": "passive",
"description": "Bias generation pin that sets a bias current of 0.98V/RBG, used to select RDCM, RVOUT and RVTRANS resistance."
},
{
"number": "17",
"name": "NC",
"type": "unconnected",
"description": "No connection."
},
{
"number": "18",
"name": "RVOUT",
"type": "input",
"description": "Output voltage sense pin that develops a current proportional to the output capacitor voltage via a resistor to the NMOS drain, VOUT = 0.98 • N • (RVOUT/RBG) - VDIODE when RVOUT = RVTRANS."
},
{
"number": "19",
"name": "NC",
"type": "unconnected",
"description": "No connection."
},
{
"number": "20",
"name": "RDCM",
"type": "input",
"description": "Discontinuous mode sense pin that detects the NMOS drain reaching 20µA • RDCM + VTRANS to start the next cycle; use a resistor equal to 0.45 times the RVTRANS resistor to the drain."
},
{
"number": "21",
"name": "GND",
"type": "power_in",
"description": "Ground exposed pad (pin 21); tie directly to the local ground plane and solder to the PCB."
}
],
"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",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Datasheet names the package '20-Lead Plastic TSSOP' (FE package) with exposed pad pin 21; the 'HTSSO"
],
"pages_sent": 15,
"cost_usd": 0.212,
"at": "2026-10-31T09:26:38"
},
"datasheet": {
"url": "https://www.analog.com/media/en/technical-documentation/data-sheets/lt3751.pdf",
"pages": 34,
"sha256": "51f55e0aa25cce81",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 21,
"described": 21,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "lt3751efe-trpbf.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.41,
6.5,
1.2
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "410484e98d3b7effe4ef32efbc60bd0aaafb20b398e7f53d20ea1ae81826a238",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "lt3751efe-trpbf-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.41,
6.5,
1.2
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "74f38ed7809baaab7915a9b5a4c46ab53e0edafd30c1ca8eb4e47f4899002bfa",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "FE20 (CB)",
"source_page": 31,
"D": {
"nom_mm": 6.5,
"range_mm": [
6.4,
6.6
]
},
"E1": {
"nom_mm": 4.4,
"range_mm": [
4.3,
4.5
]
},
"E": {
"nom_mm": 6.4,
"range_mm": [
null,
null
]
},
"e": {
"nom_mm": 0.65,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 1.2,
"range_mm": [
null,
1.2
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "lt3751efe-trpbf.step",
"verdict": "PASS",
"reasons": [
"height and body within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
}
}