component
LM78M12ADT
Public Made by Adomby adom
HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453
{
"schema_version": 1,
"type": "component",
"slug": "lm78m12adt",
"title": "LM78M12ADT",
"brief": "HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2. 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)",
"lm78m12adt",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "LM78M12ADT",
"manufacturer": "HGSEMI",
"package": "TO-252-2",
"pin_count": 3,
"category": "Power Management (PMIC)",
"subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603066425787764736",
"parts": {
"symbol": "lm78m12adt.kicad_sym",
"footprint": "lm78m12adt.kicad_mod",
"model_3d": "lm78m12adt-hero.glb",
"model_3d_plain": "lm78m12adt-etched.glb",
"model_3d_step": "lm78m12adt-etched.step",
"model_3d_step_plain": "lm78m12adt.step",
"lbr": "lm78m12adt.lbr"
},
"distributor_links": {
"lcsc": "C7432058"
},
"distributor_check": {
"checked_at": "2026-10-18T00:57:07Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "VIN",
"type": "power_in",
"description": "Input voltage pin; absolute maximum 35 V for 5 V to 18 V output versions, and the 12 V version is tested with VI = 14.5 V to 30 V for line regulation."
},
{
"number": "2",
"name": "GND",
"type": "power_in",
"description": "Ground pin, drawn as a short center lead that is connected to the GND tab."
},
{
"number": "3",
"name": "VOUT",
"type": "power_out",
"description": "Regulated 12 V output (11.5 V to 12.5 V at TJ = +25 °C) for the LM78M12A, rated up to 1 A."
}
],
"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+vision",
"consensus_model": "claude-opus-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The drawing labels the tab GND and the center lead (pin 2) as GND in the block diagram. The tab is n",
"dropped thermal pad ['EP'] absent from footprint",
"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 11,
"cost_usd": 0.2476,
"at": "2026-10-18T00:55:30"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603066425787764736",
"pages": 11,
"sha256": "c40b29b635c9cfa3",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 3,
"described": 3,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "lm78m12adt.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
9.9,
6.5,
2.32
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "3eb4c99603a4fe837c2fe9308bc174769ded87a785a0df48d2dc441432ee8b4c",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "lm78m12adt-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
9.9,
6.5,
2.32
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "d7dbc8dc48682ee772ccd6f61101dbae37438d14655cfe002e454c4376e624c0",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "HGSEMI",
"Package": "TO-252-2",
"Category": "Power Management (PMIC)",
"Pins": "3"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "c40b29b635c9cfa3b36a34789ce5cf7b617ecefc52c4d8730d870c955e44c491",
"rows": [
{
"name": "Output Voltage (TJ = +25℃)",
"symbol": "VO",
"kind": "electrical",
"unit": "V",
"min": 11.5,
"typ": 12,
"max": 12.5,
"conditions": "TJ = +25℃",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Output Voltage (IO = 5mA to 1A, VI = 14.5V to 27V)",
"symbol": "VO",
"kind": "electrical",
"unit": "V",
"min": 11.4,
"typ": 12,
"max": 12.6,
"conditions": "IO = 5mA to 1A, VI = 14.5V to 27V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Line Regulation",
"symbol": "VO",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": 100,
"conditions": "IO = 200mA, TJ = +25℃, VI = 14.5V to 30V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Line Regulation",
"symbol": "VO",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": 50,
"conditions": "IO = 200mA, TJ = +25℃, VI = 16V to 30V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Load Regulation",
"symbol": "VO",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": 240,
"conditions": "IO = 5mA to 0.5A, TJ = +25℃",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Load Regulation",
"symbol": "VO",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": 120,
"conditions": "IO = 5mA to 200mA, TJ = +25℃",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Quiescent Current",
"symbol": "IQ",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 4.1,
"max": 6,
"conditions": "TJ = +25℃",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Quiescent Current Change",
"symbol": "IQ",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": null,
"max": 0.5,
"conditions": "IO = 5mA to 350mA",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Quiescent Current Change",
"symbol": "IQ",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": null,
"max": 0.8,
"conditions": "IO = 200mA, VI = 14.5V to 30V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Input Voltage (for VO = 5V to 18V)",
"symbol": "VI",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 35,
"conditions": "for VO = 5V to 18V",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Operating Junction Temperature Range",
"symbol": "TOPR",
"kind": "recommended_operating",
"unit": "℃",
"min": 0,
"typ": null,
"max": 125,
"conditions": "Operating junction temperature range",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Storage Temperature Range",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "℃",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Lead Temperature (Soldering, 10 seconds)",
"symbol": "TL",
"kind": "absolute_maximum",
"unit": "℃",
"min": null,
"typ": null,
"max": 245,
"conditions": "Soldering, 10 seconds",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Thermal Resistance Junction-Case",
"symbol": "RθJC",
"kind": "thermal",
"unit": "℃/W",
"min": null,
"typ": 2.5,
"max": null,
"conditions": "TO-252-2, Tc = +25 ℃",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Thermal Resistance Junction-Air",
"symbol": "RθJA",
"kind": "thermal",
"unit": "℃/W",
"min": null,
"typ": 92,
"max": null,
"conditions": "TO-252-2, Ta = +25 ℃",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Output Voltage Drift",
"symbol": "V/T",
"kind": "temperature_coefficient",
"unit": "mV/℃",
"min": null,
"typ": -0.5,
"max": null,
"conditions": "IO = 5mA, TJ = -40 to +85℃",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Output Noise Voltage",
"symbol": "VN",
"kind": "electrical",
"unit": "µV/Vo",
"min": null,
"typ": 75,
"max": null,
"conditions": "f = 10Hz to 100kHz",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Ripple Rejection",
"symbol": "RR",
"kind": "electrical",
"unit": "dB",
"min": null,
"typ": 80,
"max": null,
"conditions": "f = 120Hz, IO = 300mA, VI = 15V to 25V, TJ = +25℃",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Dropout Voltage",
"symbol": "VD",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 2,
"max": null,
"conditions": "TJ = +25℃, IO = 500mA",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Short Circuit Current",
"symbol": "ISC",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 300,
"max": null,
"conditions": "TJ = +25℃, VI = 35V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Peak Current",
"symbol": "IPK",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 700,
"max": null,
"conditions": "TJ = +25℃",
"source_page": 5,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"lm78m12adt"
],
"discovery_pitch": "LM78M12ADT (HGSEMI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"lm78m12adt.kicad_sym",
"lm78m12adt.kicad_mod",
"lm78m12adt.glb",
"lm78m12adt.step",
"lm78m12adt.lbr",
"docs/hero.png",
"docs/lm78m12adt-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"lm78m12adt-hero.glb",
"lm78m12adt-hero.overlay.json",
"lm78m12adt-etched.glb"
],
"visibility": {
"public": true
}
}