component
L9945TR
Public Made by Adomby adom
STMicroelectronics Power Management - Specialized, TQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530
{
"slug": "l9945tr",
"version": "0.1.0",
"type": "component",
"description": "STMicroelectronics Power Management - Specialized, TQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"power management (pmic)",
"l9945tr",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"l9945tr.kicad_sym",
"l9945tr.kicad_mod",
"l9945tr.glb",
"l9945tr.step",
"l9945tr.lbr",
"docs/hero.png",
"docs/l9945tr-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"l9945tr-hero.glb",
"l9945tr-hero.overlay.json",
"l9945tr-etched.glb"
],
"component": {
"mpn": "L9945TR",
"manufacturer": "STMicroelectronics",
"package": "TQFP-64(10x10)",
"pin_count": 64,
"category": "Power Management (PMIC)",
"subcategory": "Power Management - Specialized",
"datasheet": "https://www.st.com/resource/en/datasheet/l9945tr.pdf",
"parts": {
"symbol": "l9945tr.kicad_sym",
"footprint": "l9945tr.kicad_mod",
"model_3d": "l9945tr-hero.glb",
"model_3d_plain": "l9945tr-etched.glb",
"model_3d_step": "l9945tr-etched.step",
"model_3d_step_plain": "l9945tr.step",
"lbr": "l9945tr.lbr"
},
"distributor_links": {
"lcsc": "C2156048",
"digikey": "497-18911-2-ND",
"mouser": "511-L9945TR"
},
"distributor_check": {
"checked_at": "2026-11-05T21:31:20Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "497-18911-2-ND",
"status": "found"
},
"mouser": {
"pn": "511-L9945TR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "NON1",
"type": "input",
"description": "Output 1 ON-OFF signal (NPWM signal for H-Bridge 1); digital input with pull-up, active low, 2 kV HBM ESD."
},
{
"number": "2",
"name": "NON2",
"type": "input",
"description": "Output 2 ON-OFF signal (DIR signal for H-Bridge 1); digital input with pull-up, active low, 2 kV HBM ESD."
},
{
"number": "3",
"name": "NON3",
"type": "input",
"description": "Output 3 ON-OFF signal (HIZ signal for H-Bridge 1); digital input with pull-up, active low, 2 kV HBM ESD."
},
{
"number": "4",
"name": "NON4",
"type": "input",
"description": "Output 4 ON-OFF signal; digital input with pull-up, active low, 2 kV HBM ESD."
},
{
"number": "5",
"name": "NON5",
"type": "input",
"description": "Output 5 ON-OFF signal (NPWM signal for H-Bridge 2); digital input with pull-up, active low, 2 kV HBM ESD."
},
{
"number": "6",
"name": "NON6",
"type": "input",
"description": "Output 6 ON-OFF signal (DIR signal for H-Bridge 2); digital input with pull-up, active low, 2 kV HBM ESD."
},
{
"number": "7",
"name": "NON7",
"type": "input",
"description": "Output 7 ON-OFF signal (HIZ signal for H-Bridge 2); digital input with pull-up, active low, 2 kV HBM ESD."
},
{
"number": "8",
"name": "NON8",
"type": "input",
"description": "Output 8 ON-OFF signal; digital input with pull-up, active low, 2 kV HBM ESD."
},
{
"number": "9",
"name": "VIO",
"type": "power_in",
"description": "Supply voltage for SDO, must be connected to the same supply as the master SPI device; VIO range -0.3 to 40 V per Table 2."
},
{
"number": "10",
"name": "SDO",
"type": "output",
"description": "SPI data out; requires an external pull-down resistor in the 10k to 47k range vs GNDIO."
},
{
"number": "11",
"name": "GNDIO",
"type": "power_in",
"description": "Ground for SPI, must be shorted to GNDCP."
},
{
"number": "12",
"name": "NRES",
"type": "input",
"description": "Reset input, must be connected to ECU reset; active low with pull-up and 2 kV HBM ESD."
},
{
"number": "13",
"name": "NCS",
"type": "input",
"description": "SPI chip select, pull-up, active low."
},
{
"number": "14",
"name": "SDI",
"type": "input",
"description": "SPI data in with pull-up."
},
{
"number": "15",
"name": "SCK",
"type": "input",
"description": "SPI clock with pull-up."
},
{
"number": "16",
"name": "DIS",
"type": "input",
"description": "Disable input, must be connected to the external microcontroller to allow disabling of outputs 1-6; pull-up, active high."
},
{
"number": "17",
"name": "DRN8",
"type": "input",
"description": "FET drain on channel 8; ESD ±4 kV HBM."
},
{
"number": "18",
"name": "GNSP8",
"type": "output",
"description": "NFET gate / PFET source on channel 8; ESD ±4 kV HBM."
},
{
"number": "19",
"name": "SNGP8",
"type": "output",
"description": "NFET source / PFET gate on channel 8; ESD ±4 kV HBM."
},
{
"number": "20",
"name": "BATT78",
"type": "power_in",
"description": "Battery supply for channels 7 and 8; BATTxx range -1 to 60 V per Table 2."
},
{
"number": "21",
"name": "SNGP7",
"type": "output",
"description": "NFET source / PFET gate on channel 7; ESD ±4 kV HBM."
},
{
"number": "22",
"name": "GNSP7",
"type": "output",
"description": "NFET gate / PFET source on channel 7; ESD ±4 kV HBM."
},
{
"number": "23",
"name": "DRN7",
"type": "input",
"description": "FET drain on channel 7; ESD ±4 kV HBM."
},
{
"number": "24",
"name": "PGND78",
"type": "power_in",
"description": "Power ground for channels 7 and 8; ground voltage range -0.3 to 0.3 V per Table 2."
},
{
"number": "25",
"name": "PGND56",
"type": "power_in",
"description": "Power ground for channels 5 and 6; ground voltage range -0.3 to 0.3 V per Table 2."
},
{
"number": "26",
"name": "DRN6",
"type": "input",
"description": "FET drain on channel 6; ESD ±4 kV HBM."
},
{
"number": "27",
"name": "GNSP6",
"type": "output",
"description": "NFET gate / PFET source on channel 6; ESD ±4 kV HBM."
},
{
"number": "28",
"name": "SNGP6",
"type": "output",
"description": "NFET source / PFET gate on channel 6; ESD ±4 kV HBM."
},
{
"number": "29",
"name": "BATT56",
"type": "power_in",
"description": "Battery supply for channels 5 and 6; BATTxx range -1 to 60 V per Table 2."
},
{
"number": "30",
"name": "SNGP5",
"type": "output",
"description": "NFET source / PFET gate on channel 5; ESD ±4 kV HBM."
},
{
"number": "31",
"name": "GNSP5",
"type": "output",
"description": "NFET gate / PFET source on channel 5; ESD ±4 kV HBM."
},
{
"number": "32",
"name": "DRN5",
"type": "input",
"description": "FET drain on channel 5; ESD ±4 kV HBM."
},
{
"number": "33",
"name": "RESERVED",
"type": "unconnected",
"description": "Reserved pin; leave floating."
},
{
"number": "34",
"name": "RESERVED",
"type": "unconnected",
"description": "Reserved pin; leave floating."
},
{
"number": "35",
"name": "VDD5",
"type": "power_in",
"description": "5 V input (usually output of external regulator); operating range 4.5 V to 5.5 V."
},
{
"number": "36",
"name": "GND",
"type": "power_in",
"description": "Ground; ground voltage range -0.3 to 0.3 V per Table 2."
},
{
"number": "37",
"name": "GNDCP",
"type": "power_in",
"description": "Ground for charge pump, must be shorted to GNDIO."
},
{
"number": "38",
"name": "VGBHI",
"type": "power_out",
"description": "Charge pump output (battery + 12 V), connected to VPS through a tank capacitor; VGBHI-VPS max 20 V."
},
{
"number": "39",
"name": "CH4",
"type": "bidirectional",
"description": "2nd node for flying capacitor 2 of the charge pump."
},
{
"number": "40",
"name": "CH2",
"type": "bidirectional",
"description": "2nd node for flying capacitor 1 of the charge pump."
},
{
"number": "41",
"name": "CH3",
"type": "bidirectional",
"description": "1st node for flying capacitor 2 of the charge pump."
},
{
"number": "42",
"name": "VPS",
"type": "power_in",
"description": "Battery input used to supply the charge pump; static VPS range -1 to 60 V per Table 2."
},
{
"number": "43",
"name": "CH1",
"type": "bidirectional",
"description": "1st node for flying capacitor 1 of the charge pump."
},
{
"number": "44",
"name": "RESERVED",
"type": "input",
"description": "Reserved pin; tie low."
},
{
"number": "45",
"name": "NDIS",
"type": "bidirectional",
"description": "Negated disable input/output; can act as a negated disable input or as an interrupt output to the microcontroller when pulled down; pull-down, active low."
},
{
"number": "46",
"name": "RESERVED",
"type": "unconnected",
"description": "Reserved pin; leave floating."
},
{
"number": "47",
"name": "EN6",
"type": "input",
"description": "Output 6 enable, used to enable the output driver for safety relevant load control; pull-down, active high."
},
{
"number": "48",
"name": "RESERVED",
"type": "unconnected",
"description": "Reserved pin; leave floating."
},
{
"number": "49",
"name": "DRN4",
"type": "input",
"description": "FET drain on channel 4; ESD ±4 kV HBM."
},
{
"number": "50",
"name": "GNSP4",
"type": "output",
"description": "NFET gate / PFET source on channel 4; ESD ±4 kV HBM."
},
{
"number": "51",
"name": "SNGP4",
"type": "output",
"description": "NFET source / PFET gate on channel 4; ESD ±4 kV HBM."
},
{
"number": "52",
"name": "BATT34",
"type": "power_in",
"description": "Battery supply for channels 3 and 4; BATTxx range -1 to 60 V per Table 2."
},
{
"number": "53",
"name": "SNGP3",
"type": "output",
"description": "NFET source / PFET gate on channel 3; ESD ±4 kV HBM."
},
{
"number": "54",
"name": "GNSP3",
"type": "output",
"description": "NFET gate / PFET source on channel 3; ESD ±4 kV HBM."
},
{
"number": "55",
"name": "DRN3",
"type": "input",
"description": "FET drain on channel 3; ESD ±4 kV HBM."
},
{
"number": "56",
"name": "PGND34",
"type": "power_in",
"description": "Power ground for channels 3 and 4; ground voltage range -0.3 to 0.3 V per Table 2."
},
{
"number": "57",
"name": "PGND12",
"type": "power_in",
"description": "Power ground for channels 1 and 2; ground voltage range -0.3 to 0.3 V per Table 2."
},
{
"number": "58",
"name": "DRN2",
"type": "input",
"description": "FET drain on channel 2; ESD ±4 kV HBM."
},
{
"number": "59",
"name": "GNSP2",
"type": "output",
"description": "NFET gate / PFET source on channel 2; ESD ±4 kV HBM."
},
{
"number": "60",
"name": "SNGP2",
"type": "output",
"description": "NFET source / PFET gate on channel 2; ESD ±4 kV HBM."
},
{
"number": "61",
"name": "BATT12",
"type": "power_in",
"description": "Battery supply for channels 1 and 2; BATTxx range -1 to 60 V per Table 2."
},
{
"number": "62",
"name": "SNGP1",
"type": "output",
"description": "NFET source / PFET gate on channel 1; ESD ±4 kV HBM."
},
{
"number": "63",
"name": "GNSP1",
"type": "output",
"description": "NFET gate / PFET source on channel 1; ESD ±4 kV HBM."
},
{
"number": "64",
"name": "DRN1",
"type": "input",
"description": "FET drain on channel 1; ESD ±4 kV HBM."
}
],
"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 exposed pad on the underside of the TQFP64 package is not a numbered pin in Table 1 and is omitt; Pins 33, 34, 46 and 48 are RESERVED and marked 'Leave floating' in Table 1, so they are typed unconn"
],
"pages_sent": 26,
"cost_usd": 0.0464,
"at": "2026-11-05T21:31:05"
},
"datasheet": {
"url": "https://www.st.com/resource/en/datasheet/l9945tr.pdf",
"pages": 151,
"sha256": "9d46fef15bb11d30",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 64,
"described": 64,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "l9945tr.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12.0,
12.0,
1.1
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "60567e81b0770b6c519104183a7a05ba52dddc11146b5fbe21434fbb5801696c",
"checked": "2026-11-05",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "l9945tr-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12.0,
12.0,
1.1
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "acd46f0be4a21698b5277d92654c980f9085717a6e2fdc3c674423428b416dbb",
"checked": "2026-11-05",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}