component
LM26420Q1XMHX
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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"slug": "lm26420q1xmhx",
"version": "0.1.0",
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"description": "Texas Instruments DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"power supply chip",
"lm26420q1xmhx",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
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"component": {
"mpn": "LM26420Q1XMHX",
"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-q1",
"parts": {
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"distributor_links": {
"lcsc": "C544613"
},
"distributor_check": {
"checked_at": "2026-10-08T02:51:18Z",
"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": "Supply for the control circuitry and high/low-side gate drivers; it should be RC-filtered to AGND (RF typically 1-10 Ω, CF 0.22-1 µF in X7R/X5R) and must not be lower than VIND1,2 − VTH."
},
{
"number": "2",
"name": "EN1",
"type": "input",
"description": "Logic-high enable input for buck converter 1; do not leave it floating or drive it above VIN + 0.3 V."
},
{
"number": "3",
"name": "VIND1",
"type": "power_in",
"description": "Input power supply for buck converter 1 (recommended VIN range 3 V to 5.5 V)."
},
{
"number": "4",
"name": "VIND1",
"type": "power_in",
"description": "Input power supply for buck converter 1 (recommended VIN range 3 V to 5.5 V); pins 3 and 4 are internally the same net."
},
{
"number": "5",
"name": "SW1",
"type": "power_out",
"description": "Output switch node of buck converter 1; connects to the inductor."
},
{
"number": "6",
"name": "PGND1",
"type": "power_in",
"description": "Power ground pin for buck converter 1."
},
{
"number": "7",
"name": "PGND1",
"type": "power_in",
"description": "Power ground pin for buck converter 1; pins 6 and 7 are internally the same net."
},
{
"number": "8",
"name": "FB1",
"type": "input",
"description": "Feedback pin for buck converter 1; connect to an external resistor divider to set the output voltage (VREF = 0.8 V)."
},
{
"number": "9",
"name": "PG1",
"type": "output",
"description": "Power-good indicator for buck converter 1; open-drain output that must be pulled up to an external supply through a resistor (typically 10 kΩ to 100 kΩ)."
},
{
"number": "10",
"name": "DAP",
"type": "passive",
"description": "Die attach pad connection; connect to system ground for low thermal resistance, but this pin cannot be used as the main GND connection."
},
{
"number": "11",
"name": "DAP",
"type": "passive",
"description": "Die attach pad connection; connect to system ground for low thermal resistance, but this pin cannot be used as the main GND connection."
},
{
"number": "12",
"name": "PG2",
"type": "output",
"description": "Power-good indicator for buck converter 2; open-drain output that must be pulled up to an external supply through a resistor (typically 10 kΩ to 100 kΩ)."
},
{
"number": "13",
"name": "FB2",
"type": "input",
"description": "Feedback pin for buck converter 2; connect to an external resistor divider to set the output voltage (VREF = 0.8 V)."
},
{
"number": "14",
"name": "PGND2",
"type": "power_in",
"description": "Power ground pin for buck converter 2."
},
{
"number": "15",
"name": "PGND2",
"type": "power_in",
"description": "Power ground pin for buck converter 2; pins 14 and 15 are internally the same net."
},
{
"number": "16",
"name": "SW2",
"type": "power_out",
"description": "Output switch node of buck converter 2; connects to the inductor."
},
{
"number": "17",
"name": "VIND2",
"type": "power_in",
"description": "Input power supply for buck converter 2 (recommended VIN range 3 V to 5.5 V)."
},
{
"number": "18",
"name": "VIND2",
"type": "power_in",
"description": "Input power supply for buck converter 2 (recommended VIN range 3 V to 5.5 V); pins 17 and 18 are internally the same net."
},
{
"number": "19",
"name": "EN2",
"type": "input",
"description": "Logic-high enable input for buck converter 2; do not leave it floating or drive it above VIN + 0.3 V."
},
{
"number": "20",
"name": "AGND",
"type": "power_in",
"description": "Signal ground pin; place the bottom feedback resistor as close as possible to this pin."
},
{
"number": "21",
"name": "EP",
"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: Table 4-2 lists pins 10, 11 and DAP together on one row with no pin-type letter. The 'passive' type ; Table 4-2 marks VIND1/VIND2 and VINC as analog ('A'). I classed them as power_in because they are su; Table 4-2 marks SW1/SW2 as power ('P'). I used power_out because they are the converter switch nodes",
"exposed pad 21 added from the footprint",
"dropped thermal pad ['EP'] absent from footprint"
],
"pages_sent": 28,
"cost_usd": 0.1428,
"at": "2026-10-08T02:50:53"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/lm26420-q1",
"pages": 47,
"sha256": "b25d3310c3924b09",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 21,
"described": 21,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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"checked": "2026-10-08",
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},
{
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}