component
LT3042HDD#TRPBF
Public Made by Adomby adom
Analog Devices Linear Voltage Regulators (LDO), TDFN-10-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"type": "component",
"description": "Analog Devices Linear Voltage Regulators (LDO), TDFN-10-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
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"power management ics",
"lt3042hdd#trpbf",
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"lt3042hdd-trpbf.step",
"lt3042hdd-trpbf.lbr",
"docs/hero.png",
"docs/lt3042hdd-trpbf-datasheet.pdf",
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"lt3042hdd-trpbf-hero.overlay.json",
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"component": {
"mpn": "LT3042HDD#TRPBF",
"manufacturer": "Analog Devices",
"package": "TDFN-10-EP(3x3)",
"pin_count": 11,
"category": "Power Management ICs",
"subcategory": "Linear Voltage Regulators (LDO)",
"datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/3042fb.pdf",
"parts": {
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"footprint": "lt3042hdd-trpbf.kicad_mod",
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"model_3d_plain": "lt3042hdd-trpbf-etched.glb",
"model_3d_step": "lt3042hdd-trpbf-etched.step",
"model_3d_step_plain": "lt3042hdd-trpbf.step",
"lbr": "lt3042hdd-trpbf.lbr"
},
"distributor_links": {
"lcsc": "C666564",
"digikey": "LT3042HDD#TRPBFTR-ND",
"mouser": "584-LT3042HDD#TRPBF"
},
"distributor_check": {
"checked_at": "2026-10-31T18:40:44Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "LT3042HDD#TRPBFTR-ND",
"status": "found"
},
"mouser": {
"pn": "584-LT3042HDD#TRPBF",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "IN",
"type": "power_in",
"description": "Input supply pin (shared with pin 2) requiring a bypass capacitor, typically 4.7µF; withstands reverse voltages with respect to GND, OUTS and OUT, and absolute maximum is ±22V."
},
{
"number": "2",
"name": "IN",
"type": "power_in",
"description": "Input supply pin (shared with pin 1) requiring a bypass capacitor, typically 4.7µF; withstands reverse voltages with respect to GND, OUTS and OUT, and absolute maximum is ±22V."
},
{
"number": "3",
"name": "EN/UV",
"type": "input",
"description": "Enable/UVLO pin that turns on above 1.24V rising with 170mV hysteresis, shuts down below that with <1µA quiescent current, can set a UVLO via resistor divider, and must be tied to IN if unused, never floated."
},
{
"number": "4",
"name": "PG",
"type": "output",
"description": "Open-collector power good flag that pulls low if PGFB is below 300mV; float if unused and do not drive more than 0.3V below GND."
},
{
"number": "5",
"name": "ILIM",
"type": "passive",
"description": "Current limit programming pin where a resistor to GND sets the limit with a 125mA•kΩ scale factor, sources current proportional (1:400) to output current with 0V to 300mV monitoring range, and is tied to GND if unused."
},
{
"number": "6",
"name": "PGFB",
"type": "input",
"description": "Power good feedback input with 300mV rising threshold and 7mV hysteresis, set by a divider from OUT, also enables fast start-up circuitry; tie to IN if power good and fast start-up are not needed."
},
{
"number": "7",
"name": "SET",
"type": "passive",
"description": "Error amplifier inverting input and regulation set-point that sources a precision 100µA through an external resistor to GND (VSET = ISET•RSET), output range 0V to 15V, with an optional capacitor to GND for noise and PSRR."
},
{
"number": "8",
"name": "GND",
"type": "power_in",
"description": "Ground pin, tied directly to the exposed pad, which must be soldered to PCB ground for electrical and thermal performance."
},
{
"number": "9",
"name": "OUTS",
"type": "input",
"description": "Output sense pin, the noninverting input to the error amplifier, Kelvin connected directly to the output capacitor and load; do not drive more than 0.3V below GND."
},
{
"number": "10",
"name": "OUT",
"type": "power_out",
"description": "Regulated output supplying up to 200mA to the load, requiring a minimum 4.7µF output capacitor with ESR below 50mΩ and ESL below 2nH; absolute maximum is 16V."
},
{
"number": "11",
"name": "GND",
"type": "power_in",
"description": "Exposed pad is an electrical connection to GND and must be soldered to the PCB ground and tied directly to the GND pin."
}
],
"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: The datasheet package is named '10-Lead (3mm × 3mm) Plastic DFN' (DD package); mapping to the TDFN-1; Pin types for ILIM, SET and PGFB are judgment calls; the datasheet does not give KiCad ERC classes."
],
"pages_sent": 13,
"cost_usd": 0.1862,
"at": "2026-10-31T18:40:31"
},
"datasheet": {
"url": "https://www.analog.com/media/en/technical-documentation/data-sheets/3042fb.pdf",
"pages": 32,
"sha256": "c65c2b7406029d9b",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 11,
"described": 11,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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"models_3d": [
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"file": "lt3042hdd-trpbf.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
3.0,
2.98,
0.77
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "738e2eb45860c11759f8e4f44ab26932b7c15e4d5d6c8c9ac22ae866a3e38711",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "lt3042hdd-trpbf-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
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],
"package_dims": {
"package_code": "DD",
"source_page": 29,
"D": {
"nom_mm": 3.0,
"range_mm": [
null,
null
]
},
"E1": {
"nom_mm": 3.0,
"range_mm": [
null,
null
]
},
"e": {
"nom_mm": 0.5,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 0.75,
"range_mm": [
null,
null
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "lt3042hdd-trpbf.step",
"verdict": "PASS",
"reasons": [
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}