component
LM26420YMHX
Public Made by Adomby adom
Texas Instruments DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "lm26420ymhx",
"title": "LM26420YMHX",
"brief": "Texas Instruments DC-DC Converters, HTSSOP-20-EP. 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 supply chip",
"lm26420ymhx",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "LM26420YMHX",
"manufacturer": "Texas Instruments",
"package": "HTSSOP-20-EP",
"pin_count": 21,
"category": "Power Supply Chip",
"subcategory": "DC-DC Converters",
"datasheet": "https://www.ti.com/cn/lit/gpn/lm26420",
"parts": {
"symbol": "lm26420ymhx.kicad_sym",
"footprint": "lm26420ymhx.kicad_mod",
"model_3d": "lm26420ymhx-hero.glb",
"model_3d_plain": "lm26420ymhx.glb",
"model_3d_step": "lm26420ymhx-etched.step",
"model_3d_step_plain": "lm26420ymhx.step",
"lbr": "lm26420ymhx.lbr"
},
"distributor_links": {
"lcsc": "C2070610"
},
"distributor_check": {
"checked_at": "2026-10-08T00:20:06Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "VINC",
"type": "power_in",
"description": "Input supply for the control circuitry, operating within the recommended VIN range of 3 V to 5.5 V."
},
{
"number": "2",
"name": "EN1",
"type": "input",
"description": "Enable control input for Buck 1, logic high enables operation; do not allow this pin to float or be greater than VIN + 0.3 V."
},
{
"number": "3",
"name": "VIND1",
"type": "power_in",
"description": "Power input supply for Buck 1 (pins 3 and 4 are both VIND1)."
},
{
"number": "4",
"name": "VIND1",
"type": "power_in",
"description": "Power input supply for Buck 1 (pins 3 and 4 are both VIND1)."
},
{
"number": "5",
"name": "SW1",
"type": "power_out",
"description": "Output switch node for Buck 1; connect to the inductor."
},
{
"number": "6",
"name": "PGND1",
"type": "power_in",
"description": "Power ground pin for Buck 1 (pins 6 and 7 are both PGND1)."
},
{
"number": "7",
"name": "PGND1",
"type": "power_in",
"description": "Power ground pin for Buck 1 (pins 6 and 7 are both PGND1)."
},
{
"number": "8",
"name": "FB1",
"type": "input",
"description": "Feedback pin for Buck 1; connect to an external resistor divider to set the output voltage."
},
{
"number": "9",
"name": "PG1",
"type": "output",
"description": "Power Good indicator for Buck 1, an open-drain output pulled up through a resistor to an external supply."
},
{
"number": "10",
"name": "DAP",
"type": "power_in",
"description": "Die attach pad; connect to system ground for low thermal impedance, but it cannot be used as a primary GND connection."
},
{
"number": "11",
"name": "DAP",
"type": "power_in",
"description": "Die attach pad; connect to system ground for low thermal impedance, but it cannot be used as a primary GND connection."
},
{
"number": "12",
"name": "PG2",
"type": "output",
"description": "Power Good indicator for Buck 2, an open-drain output pulled up through a resistor to an external supply."
},
{
"number": "13",
"name": "FB2",
"type": "input",
"description": "Feedback pin for Buck 2; connect to an external resistor divider to set the output voltage."
},
{
"number": "14",
"name": "PGND2",
"type": "power_in",
"description": "Power ground pin for Buck 2 (pins 14 and 15 are both PGND2)."
},
{
"number": "15",
"name": "PGND2",
"type": "power_in",
"description": "Power ground pin for Buck 2 (pins 14 and 15 are both PGND2)."
},
{
"number": "16",
"name": "SW2",
"type": "power_out",
"description": "Output switch node for Buck 2; connect to the inductor."
},
{
"number": "17",
"name": "VIND2",
"type": "power_in",
"description": "Power input supply for Buck 2 (pins 17 and 18 are both VIND2)."
},
{
"number": "18",
"name": "VIND2",
"type": "power_in",
"description": "Power input supply for Buck 2 (pins 17 and 18 are both VIND2)."
},
{
"number": "19",
"name": "EN2",
"type": "input",
"description": "Enable control input for Buck 2, logic high enables operation; do not allow this pin to float or be greater than VIN + 0.3 V."
},
{
"number": "20",
"name": "AGND",
"type": "power_in",
"description": "Signal ground pin; place the bottom resistor of the feedback network as close as possible to this pin."
},
{
"number": "21",
"name": "DAP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"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 20-pin HTSSOP table lists pins '10, 11, DAP' as one row. The pin numbers 10 and 11 are assigned ; The datasheet classifies SW1 and SW2 as type 'P' (power). I mapped these to KiCad power_out as the c; The datasheet classifies PG1 and PG2 as type 'G' in the pin table. I mapped them to KiCad output bec",
"exposed pad 21 added from the footprint"
],
"pages_sent": 10,
"cost_usd": 0.0697,
"at": "2026-10-08T00:19:40"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/lm26420",
"pages": 49,
"sha256": "990c6ab4facbae3a",
"source_tier": "lcsc"
},
"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": "lm26420ymhx.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,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "a937667024c837c1f9c46757daf88a47fa4a6af0894889aa311360550997387f",
"checked": "2026-10-08",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "lm26420ymhx-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,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "3b0acf8aebc652fd02a663f48d5fdcd8db702dc81156dcaefcb07fadadd8a300",
"checked": "2026-10-08",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "HTSSOP-20-EP",
"Category": "Power Supply Chip",
"Pins": "21"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"lm26420ymhx"
],
"discovery_pitch": "LM26420YMHX (Texas Instruments) 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",
"lm26420ymhx.kicad_sym",
"lm26420ymhx.kicad_mod",
"lm26420ymhx.glb",
"lm26420ymhx.step",
"lm26420ymhx.lbr",
"docs/hero.png",
"docs/lm26420ymhx-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"lm26420ymhx-hero.glb",
"lm26420ymhx-hero.overlay.json"
],
"visibility": {
"public": true
}
}