component
L78L09ABUTR
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
main
Ray
Publish 0.2.1
91a9b6d
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236
{
"schema_version": 1,
"type": "component",
"slug": "l78l09abutr",
"title": "L78L09ABUTR",
"brief": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
"version": "0.2.1",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"pmic",
"l78l09abutr"
],
"component": {
"mpn": "L78L09ABUTR",
"manufacturer": "STMicroelectronics",
"package": "SOT-89-3",
"pin_count": 3,
"category": "PMIC",
"subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
"datasheet": "https://www.st.com/resource/en/datasheet/l78l09abutr.pdf",
"parts": {
"symbol": "l78l09abutr.kicad_sym",
"footprint": "l78l09abutr.kicad_mod",
"model_3d": "l78l09abutr-hero.glb",
"model_3d_plain": "l78l09abutr.glb",
"model_3d_step": "l78l09abutr-etched.step",
"model_3d_step_plain": "l78l09abutr.step",
"lbr": "l78l09abutr.lbr"
},
"distributor_links": {
"digikey": "497-7273-2-ND",
"lcsc": "C52103"
},
"pins": [
{
"number": "1",
"name": "VOUT",
"type": "power_out",
"description": "Regulated +9 V output. Sources up to 100 mA with typical dropout of 1.7 V. Bypass to GND with a 0.1 µF ceramic capacitor near the pin."
},
{
"number": "2",
"name": "GND",
"type": "power_in",
"description": "Common ground reference for input and output. Also the thermal path in SOT-89 (pin 2 is bonded to the die-attach tab under the package)."
},
{
"number": "3",
"name": "VIN",
"type": "power_in",
"description": "Unregulated positive input. Absolute maximum DC input voltage is 30 V for the 9 V version. Bypass to GND with a 0.33 µF capacitor to prevent oscillation, especially if the regulator is located far from the raw supply filter."
}
],
"provenance": {
"extractor": "ds2sf",
"datasheet": {
"url": "https://www.st.com/resource/en/datasheet/l78l09abutr.pdf",
"pages": 46,
"sha256": "aebc91bfc9b4bb67",
"source_tier": "mfr"
},
"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"
},
"pin1": {
"pad": "1",
"at": [
-1.95,
-1.5
],
"corner": "top-left",
"source": "silk-marker",
"derived_from": "SOT-89-3@sha256:0b8db9f4a8f2547a",
"mark": "drawn"
},
"models_3d": [
{
"file": "l78l09abutr.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": "2026-10-07",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "l78l09abutr-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": "f8ce2d24bc1366433aabfd2604d3fa5a43c6495e881d5f27cae9240b0a45a162",
"checked": "2026-10-07",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "STMicroelectronics",
"Package": "SOT-89-3",
"Category": "PMIC",
"Pins": "3"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"rows": [
{
"name": "Input voltage",
"symbol": "VIN",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 30,
"conditions": "VO = 3.3 to 9 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Output current",
"symbol": "IOUT",
"kind": "recommended_operating",
"unit": "mA",
"min": null,
"typ": null,
"max": 100,
"conditions": "",
"source_page": 5,
"source": "datasheet"
}
]
}
},
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"l78l09abutr"
],
"discovery_pitch": "L78L09ABUTR (STMicroelectronics) component page with datasheet-verified CAD.",
"author": {
"name": "Ray"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"l78l09abutr.kicad_sym",
"l78l09abutr.kicad_mod",
"l78l09abutr.glb",
"l78l09abutr.step",
"l78l09abutr-etched.step",
"l78l09abutr.lbr",
"docs/hero.png",
"docs/l78l09abutr-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"pads.json",
"l78l09abutr-etched.glb",
"l78l09abutr-hero.glb",
"l78l09abutr-hero.overlay.json"
],
"visibility": "public",
"variants": [
{
"mpn": "L78L09ABUTR",
"kind": "packaging"
},
{
"mpn": "L78L09ABUTRAZ",
"kind": "packaging"
},
{
"mpn": "L78L09ABUTRACZ",
"kind": "packaging"
},
{
"mpn": "L78L09ABUTRCZ",
"kind": "packaging"
},
{
"mpn": "L78L09ABUTRD",
"kind": "packaging"
},
{
"mpn": "L78L09ABUTRD-TR",
"kind": "packaging"
},
{
"mpn": "L78L09ABUTRD13TR",
"kind": "packaging"
}
],
"updated_at": "2026-09-24T23:35:15.833Z",
"description": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
"org": "adom"
}