component
IS31FL3218-QFLS2-TR
Public Made by Adomby adom
ISSI Integrated Silicon Solution LED Drivers, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"version": "0.1.0",
"type": "component",
"description": "ISSI Integrated Silicon Solution LED Drivers, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"led drivers",
"is31fl3218-qfls2-tr",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
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],
"component": {
"mpn": "IS31FL3218-QFLS2-TR",
"manufacturer": "ISSI Integrated Silicon Solution",
"package": "QFN-24-EP(4x4)",
"pin_count": 25,
"category": "LED Drivers",
"subcategory": "LED Drivers",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590905708026552320",
"parts": {
"symbol": "is31fl3218-qfls2-tr.kicad_sym",
"footprint": "is31fl3218-qfls2-tr.kicad_mod",
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"lbr": "is31fl3218-qfls2-tr.lbr"
},
"distributor_links": {
"lcsc": "C2940546",
"digikey": "2521-IS31FL3218-QFLS2-TR-ND",
"mouser": "870-31FL3218QFLS2TR"
},
"distributor_check": {
"checked_at": "2026-10-18T02:55:47Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "2521-IS31FL3218-QFLS2-TR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "870-31FL3218QFLS2TR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "OUT18",
"type": "output",
"description": "Constant-current LED output channel 18, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "2",
"name": "R_EXT",
"type": "passive",
"description": "Input terminal for the external resistor that regulates the output current; the recommended minimum R_EXT is 2 kΩ."
},
{
"number": "3",
"name": "VCC",
"type": "power_in",
"description": "Power supply, 2.7 V to 5.5 V (absolute maximum 6.0 V)."
},
{
"number": "4",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "5",
"name": "SDA",
"type": "bidirectional",
"description": "I2C serial data, bidirectional open-collector line that requires a pull-up resistor (typically 4.7 kΩ) and maximum clock of 400 kHz."
},
{
"number": "6",
"name": "SCL",
"type": "input",
"description": "I2C serial clock, unidirectional input with a maximum clock frequency of 400 kHz."
},
{
"number": "7",
"name": "OUT1",
"type": "output",
"description": "Constant-current LED output channel 1, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "8",
"name": "OUT2",
"type": "output",
"description": "Constant-current LED output channel 2, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "9",
"name": "OUT3",
"type": "output",
"description": "Constant-current LED output channel 3, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "10",
"name": "OUT4",
"type": "output",
"description": "Constant-current LED output channel 4, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "11",
"name": "OUT5",
"type": "output",
"description": "Constant-current LED output channel 5, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "12",
"name": "OUT6",
"type": "output",
"description": "Constant-current LED output channel 6, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "13",
"name": "OUT7",
"type": "output",
"description": "Constant-current LED output channel 7, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "14",
"name": "OUT8",
"type": "output",
"description": "Constant-current LED output channel 8, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "15",
"name": "OUT9",
"type": "output",
"description": "Constant-current LED output channel 9, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "16",
"name": "OUT10",
"type": "output",
"description": "Constant-current LED output channel 10, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "17",
"name": "OUT11",
"type": "output",
"description": "Constant-current LED output channel 11, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "18",
"name": "OUT12",
"type": "output",
"description": "Constant-current LED output channel 12, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "19",
"name": "OUT13",
"type": "output",
"description": "Constant-current LED output channel 13, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "20",
"name": "OUT14",
"type": "output",
"description": "Constant-current LED output channel 14, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "21",
"name": "OUT15",
"type": "output",
"description": "Constant-current LED output channel 15, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "22",
"name": "OUT16",
"type": "output",
"description": "Constant-current LED output channel 16, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "23",
"name": "OUT17",
"type": "output",
"description": "Constant-current LED output channel 17, with current set by R_EXT (maximum 38 mA per channel) and voltage limited to -0.3 V to VCC+0.3 V."
},
{
"number": "24",
"name": "SDB",
"type": "input",
"description": "Shutdown input; the chip enters hardware shutdown when this pin is pulled low."
},
{
"number": "25",
"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: The datasheet lists a 'Thermal Pad' that should be connected to GND, but it prints no pin number for; The requested package hint was QFN-24-EP(4x4). The datasheet names the package QFN-24 (4mm x 4mm) an; The datasheet gives no explicit ERC type for R_EXT. It is described as an input terminal for an exte",
"exposed pad 25 added from the footprint"
],
"pages_sent": 16,
"cost_usd": 0.0711,
"at": "2026-10-18T02:53:44"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590905708026552320",
"pages": 16,
"sha256": "373ba4d8b999c51c",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 25,
"described": 25,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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"units": "mm",
"origin": "footprint origin = pad-pattern centre",
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"footprint_binding": "identity",
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"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "is31fl3218-qfls2-tr-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
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"sha256": "2704be2188226e82b7d703e03366c6e4196acd30d1a5718a548e282f27bbd06f",
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}
}