component
78L12MG-AB3-R
Public Made by Adomby adom
UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449
{
"schema_version": 1,
"type": "component",
"slug": "78l12mg-ab3-r",
"title": "78L12MG-AB3-R",
"brief": "UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. 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)",
"78l12mg-ab3-r",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "78L12MG-AB3-R",
"manufacturer": "UTC Unisonic Tech",
"package": "SOT-89",
"pin_count": 3,
"category": "Power Management (PMIC)",
"subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588954766587781120",
"parts": {
"symbol": "78l12mg-ab3-r.kicad_sym",
"footprint": "78l12mg-ab3-r.kicad_mod",
"model_3d": "78l12mg-ab3-r-hero.glb",
"model_3d_plain": "78l12mg-ab3-r-etched.glb",
"model_3d_step": "78l12mg-ab3-r-etched.step",
"model_3d_step_plain": "78l12mg-ab3-r.step",
"lbr": "78l12mg-ab3-r.lbr"
},
"distributor_links": {
"lcsc": "C2934661"
},
"distributor_check": {
"checked_at": "2026-10-18T11:06:35Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "OUTPUT",
"type": "power_out",
"description": "Regulated 12 V output, rated for up to 200 mA output current, with 11.40 V to 12.60 V output at 1 mA to 40 mA over a 14.5 V to 27 V input."
},
{
"number": "2",
"name": "GND",
"type": "power_in",
"description": "Ground pin, the common reference for the regulator."
},
{
"number": "3",
"name": "INPUT",
"type": "power_in",
"description": "Unregulated input voltage, with an absolute maximum of 35 V for the 10 V to 24 V output versions (which includes the 12 V version), and a 0.33 µF input bypass capacitor (C1) recommended as close to the regulator as possible."
}
],
"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 SOT-89 pin numbers come from the ordering-table pin-assignment columns (O G I), read in column o; The 12 V output values come from the UTC78L12M electrical characteristics on page 5. The 78L12MG-AB3; The 35 V absolute maximum input is stated for the 10 V to 24 V output group in the page 3 table. The"
],
"pages_sent": 8,
"cost_usd": 0.0413,
"at": "2026-10-18T11:05:13"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588954766587781120",
"pages": 8,
"sha256": "7efe8f4bcde8758d",
"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": "78l12mg-ab3-r.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4,
4.5,
1.52
],
"zmin_mm": 0,
"centre_offset_mm": 0.05,
"footprint_binding": "identity",
"sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "78l12mg-ab3-r-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4,
4.5,
1.52
],
"zmin_mm": 0,
"centre_offset_mm": 0.05,
"footprint_binding": "identity",
"sha256": "f1396eb14eba9af3e407726d6901c4f90300cbd16cb46b9249c0e1dcfe4111fc",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "UTC Unisonic Tech",
"Package": "SOT-89",
"Category": "Power Management (PMIC)",
"Pins": "3"
},
"appearance": {
"contacts": {
"quote": "Note: 1. The Maximum steady state usable output current are dependent on input voltage, heat sinking, lead length of the package and copper pattern of PCB. The data above represent pulse test conditio",
"page": 6,
"doc": "ds.pdf",
"material": "copper"
},
"version": 1,
"datasheet_sha256": "7efe8f4bcde8758d185dbc6a37f9e5c45b8ed214151f5f83b415e86c60021fd1"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "7efe8f4bcde8758d185dbc6a37f9e5c45b8ed214151f5f83b415e86c60021fd1",
"rows": [
{
"name": "Output Voltage",
"symbol": "VOUT",
"kind": "electrical",
"unit": "V",
"min": 11.52,
"typ": 12,
"max": 12.48,
"conditions": "TJ=25°C",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Output Voltage",
"symbol": "VOUT",
"kind": "electrical",
"unit": "V",
"min": 11.4,
"typ": null,
"max": 12.6,
"conditions": "14.5V≦VIN≦27V,IOUT=1mA ~ 40mA",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Load Regulation",
"symbol": "VOUT",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 25,
"max": 100,
"conditions": "TJ=25°C, IOUT=1mA ~ 100mA",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Load Regulation",
"symbol": "VOUT",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 12,
"max": 50,
"conditions": "TJ=25°C, IOUT=1mA ~ 40mA",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Line Regulation",
"symbol": "VOUT",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 25,
"max": 300,
"conditions": "14.5V≦VIN≦27V,TJ=25°C",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Line Regulation",
"symbol": "VOUT",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 20,
"max": 250,
"conditions": "16V≦VIN≦27V,TJ=25°C",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Quiescent Current",
"symbol": "IQ",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 2,
"max": 6.5,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Quiescent Current Change",
"symbol": "IQ",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 1.5,
"max": null,
"conditions": "16V≦VIN≦27V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Quiescent Current Change",
"symbol": "IQ",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 0.1,
"max": null,
"conditions": "1mA≦VIN≦40mA",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Output Noise Voltage",
"symbol": "eN",
"kind": "electrical",
"unit": "μV",
"min": null,
"typ": 80,
"max": null,
"conditions": "10Hz≦f≦100kHz",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Temperature Coefficient of VOUT",
"symbol": "VO/T",
"kind": "temperature_coefficient",
"unit": "mV/°C",
"min": null,
"typ": -1,
"max": null,
"conditions": "IOUT=5mA",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Ripple Rejection",
"symbol": "RR",
"kind": "electrical",
"unit": "dB",
"min": null,
"typ": 45,
"max": null,
"conditions": "15V≦VIN≦25V, f=120Hz,TJ=25°C",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Dropout Voltage",
"symbol": "VD",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 1.7,
"max": null,
"conditions": "TJ=25°C",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Input Voltage",
"symbol": "VIN",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 35,
"conditions": "VOUT=10~24V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Output Current",
"symbol": "IOUT",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 200,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Power Dissipation (SOT-89)",
"symbol": "PD",
"kind": "absolute_maximum",
"unit": "mW",
"min": null,
"typ": null,
"max": 350,
"conditions": "SOT-89",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Junction Temperature",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Storage Temperature",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Ambient Operating Temperature",
"symbol": "TOPR",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Junction Temperature Test Range",
"symbol": "TJ",
"kind": "recommended_operating",
"unit": "°C",
"min": 0,
"typ": null,
"max": 125,
"conditions": "Electrical characteristics table header (C1=0.33uF, CO=0.1uF, unless otherwise specified)",
"source_page": 3,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"78l12mg-ab3-r"
],
"discovery_pitch": "78L12MG-AB3-R (UTC Unisonic Tech) 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",
"78l12mg-ab3-r.kicad_sym",
"78l12mg-ab3-r.kicad_mod",
"78l12mg-ab3-r.glb",
"78l12mg-ab3-r.step",
"78l12mg-ab3-r.lbr",
"docs/hero.png",
"docs/78l12mg-ab3-r-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"78l12mg-ab3-r-hero.glb",
"78l12mg-ab3-r-hero.overlay.json",
"78l12mg-ab3-r-etched.glb"
],
"visibility": {
"public": true
}
}