component
IS31FL3731-SALS2-TR
Public Made by Adomby adom
ISSI Integrated Silicon Solution LED Drivers, SSOP-28-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "is31fl3731-sals2-tr",
"version": "0.1.0",
"type": "component",
"description": "ISSI Integrated Silicon Solution LED Drivers, SSOP-28-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"led drivers",
"is31fl3731-sals2-tr",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
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"README.md",
"is31fl3731-sals2-tr.kicad_sym",
"is31fl3731-sals2-tr.kicad_mod",
"is31fl3731-sals2-tr.glb",
"is31fl3731-sals2-tr.step",
"is31fl3731-sals2-tr.lbr",
"docs/hero.png",
"docs/is31fl3731-sals2-tr-datasheet.pdf",
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"viewers/footprint.html",
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"is31fl3731-sals2-tr-hero.overlay.json",
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],
"component": {
"mpn": "IS31FL3731-SALS2-TR",
"manufacturer": "ISSI Integrated Silicon Solution",
"package": "SSOP-28-208mil",
"pin_count": 28,
"category": "LED Drivers",
"subcategory": "LED Drivers",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590226964310634496",
"parts": {
"symbol": "is31fl3731-sals2-tr.kicad_sym",
"footprint": "is31fl3731-sals2-tr.kicad_mod",
"model_3d": "is31fl3731-sals2-tr-hero.glb",
"model_3d_plain": "is31fl3731-sals2-tr-etched.glb",
"model_3d_step": "is31fl3731-sals2-tr-etched.step",
"model_3d_step_plain": "is31fl3731-sals2-tr.step",
"lbr": "is31fl3731-sals2-tr.lbr"
},
"distributor_links": {
"lcsc": "C2940545"
},
"distributor_check": {
"checked_at": "2026-10-18T23:53:56Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "CA9",
"type": "bidirectional",
"description": "LED matrix A current output/input port for matrix row CA9 (C9-1 to C9-8)."
},
{
"number": "2",
"name": "VCC",
"type": "power_in",
"description": "Power supply, 2.7V to 5.5V operating range (absolute maximum -0.3V to +6V)."
},
{
"number": "3",
"name": "SDB",
"type": "input",
"description": "Shutdown control; pulling SDB low puts the chip into hardware shutdown, where all registers cannot be written or read."
},
{
"number": "4",
"name": "INTB",
"type": "output",
"description": "Interrupt output, active low; it is pulled low when Auto Frame Play movie ends and returns high automatically if low for at least 7ms."
},
{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Ground; the thermal pad is also connected to GND."
},
{
"number": "6",
"name": "R_EXT",
"type": "passive",
"description": "External 20kΩ resistor sets the LED current per ILED = 64.7/REXT; the recommended minimum REXT is 18kΩ."
},
{
"number": "7",
"name": "CB1",
"type": "bidirectional",
"description": "LED matrix B current output/input port for matrix column CB1 (C1-9 to C1-16)."
},
{
"number": "8",
"name": "CB2",
"type": "bidirectional",
"description": "LED matrix B current output/input port for matrix column CB2 (C2-9 to C2-16)."
},
{
"number": "9",
"name": "CB3",
"type": "bidirectional",
"description": "LED matrix B current output/input port for matrix column CB3 (C3-9 to C3-16)."
},
{
"number": "10",
"name": "CB4",
"type": "bidirectional",
"description": "LED matrix B current output/input port for matrix column CB4 (C4-9 to C4-16)."
},
{
"number": "11",
"name": "CB5",
"type": "bidirectional",
"description": "LED matrix B current output/input port for matrix column CB5 (C5-9 to C5-16)."
},
{
"number": "12",
"name": "CB6",
"type": "bidirectional",
"description": "LED matrix B current output/input port for matrix column CB6 (C6-9 to C6-16)."
},
{
"number": "13",
"name": "CB7",
"type": "bidirectional",
"description": "LED matrix B current output/input port for matrix column CB7 (C7-9 to C7-16)."
},
{
"number": "14",
"name": "CB8",
"type": "bidirectional",
"description": "LED matrix B current output/input port for matrix column CB8 (C8-9 to C8-16)."
},
{
"number": "15",
"name": "CB9",
"type": "bidirectional",
"description": "LED matrix B current output/input port for matrix column CB9 (C9-9 to C9-16)."
},
{
"number": "16",
"name": "C_FILT",
"type": "passive",
"description": "Capacitor connection used for audio processing."
},
{
"number": "17",
"name": "IN",
"type": "input",
"description": "Audio input used to modulate LED intensity or frame playing in audio modes."
},
{
"number": "18",
"name": "AD",
"type": "input",
"description": "I2C address setting: tie to GND (AD=00), SCL (AD=01), SDA (AD=10), or VCC (AD=11)."
},
{
"number": "19",
"name": "SDA",
"type": "bidirectional",
"description": "I2C-compatible serial data line; open-collector bidirectional, typically used with a 4.7kΩ pull-up, up to 400kHz."
},
{
"number": "20",
"name": "SCL",
"type": "input",
"description": "I2C-compatible serial clock input, uni-directional, maximum 400kHz."
},
{
"number": "21",
"name": "CA1",
"type": "bidirectional",
"description": "LED matrix A current output/input port for matrix row CA1 (C1-1 to C1-8)."
},
{
"number": "22",
"name": "CA2",
"type": "bidirectional",
"description": "LED matrix A current output/input port for matrix row CA2 (C2-1 to C2-8)."
},
{
"number": "23",
"name": "CA3",
"type": "bidirectional",
"description": "LED matrix A current output/input port for matrix row CA3 (C3-1 to C3-8)."
},
{
"number": "24",
"name": "CA4",
"type": "bidirectional",
"description": "LED matrix A current output/input port for matrix row CA4 (C4-1 to C4-8)."
},
{
"number": "25",
"name": "CA5",
"type": "bidirectional",
"description": "LED matrix A current output/input port for matrix row CA5 (C5-1 to C5-8)."
},
{
"number": "26",
"name": "CA6",
"type": "bidirectional",
"description": "LED matrix A current output/input port for matrix row CA6 (C6-1 to C6-8)."
},
{
"number": "27",
"name": "CA7",
"type": "bidirectional",
"description": "LED matrix A current output/input port for matrix row CA7 (C7-1 to C7-8)."
},
{
"number": "28",
"name": "CA8",
"type": "bidirectional",
"description": "LED matrix A current output/input port for matrix row CA8 (C8-1 to C8-8)."
}
],
"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 pin description table (page 3) does not name a package. Pin numbers 1-28 are taken from it and a; The table lists a 'Thermal Pad connect to GND' entry. This is the QFN exposed pad and has no pin num; KiCad types for CA1-CA9 and CB1-CB9 are inferred from the text 'current output/input port', so they ",
"13/28 pins cited to the wrong page (name found elsewhere): ['8:CB2@p3', '9:CB3@p3', '10:CB4@p3', '11:CB5@p3']"
],
"pages_sent": 24,
"cost_usd": 0.2018,
"at": "2026-10-18T23:51:44"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590226964310634496",
"pages": 24,
"sha256": "89698a6a5cb3908f",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 28,
"described": 28,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
},
"models_3d": [
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"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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"footprint_binding": "identity",
"sha256": "7aa76979ae41da44bded1ed74115012868f2f3f5a757faf32bb9df4f92c1e313",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "is31fl3731-sals2-tr-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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10.2,
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"footprint_binding": "identity",
"sha256": "affcf3680e66f3070e2c9474e0ef880fa78c13dd7fb62aac5f0df2009a680f4f",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}