component
A8522KLPTR-T
Public Made by Adomby adom
Allegro MicroSystems, LLC LED Drivers, TSSOP-28-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "a8522klptr-t",
"version": "0.1.0",
"type": "component",
"description": "Allegro MicroSystems, LLC LED Drivers, TSSOP-28-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"display modules - led drivers - display drivers",
"a8522klptr-t",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"a8522klptr-t.kicad_sym",
"a8522klptr-t.kicad_mod",
"a8522klptr-t.glb",
"a8522klptr-t.step",
"a8522klptr-t.lbr",
"docs/hero.png",
"docs/a8522klptr-t-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"a8522klptr-t-hero.glb",
"a8522klptr-t-hero.overlay.json",
"a8522klptr-t-etched.glb"
],
"component": {
"mpn": "A8522KLPTR-T",
"manufacturer": "Allegro MicroSystems, LLC",
"package": "TSSOP-28-EP",
"pin_count": 29,
"category": "Display Modules / LED Drivers / Display Drivers",
"subcategory": "LED Drivers",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/36e817d4a09f91c563ddc491286ecaa7.pdf",
"parts": {
"symbol": "a8522klptr-t.kicad_sym",
"footprint": "a8522klptr-t.kicad_mod",
"model_3d": "a8522klptr-t-hero.glb",
"model_3d_plain": "a8522klptr-t-etched.glb",
"model_3d_step": "a8522klptr-t-etched.step",
"model_3d_step_plain": "a8522klptr-t.step",
"lbr": "a8522klptr-t.lbr"
},
"distributor_links": {
"lcsc": "C2679119",
"digikey": "A8522KLPTR-T-ND",
"mouser": "250-A8522KLPTR-T"
},
"distributor_check": {
"checked_at": "2026-11-05T17:20:49Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "A8522KLPTR-T-ND",
"status": "found"
},
"mouser": {
"pn": "250-A8522KLPTR-T",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "GATE",
"type": "output",
"description": "Gate driver for an optional external PMOS input-disconnect switch, pulled high to turn off the input supply on a fault such as output shorted to GND; left open if not used."
},
{
"number": "2",
"name": "INS",
"type": "input",
"description": "Input current sense used together with VIN to detect input overcurrent faults; tie to VIN if not used."
},
{
"number": "3",
"name": "VIN",
"type": "power_in",
"description": "Input power to the A8522, specified over an input voltage range of 4.5 to 36 V."
},
{
"number": "4",
"name": "EN",
"type": "input",
"description": "Enable input that keeps the IC in shutdown while EN = VEN(L) and enables the part when connected to VEN(H) or to VIN."
},
{
"number": "5",
"name": "FSET/SYNC",
"type": "bidirectional",
"description": "A resistor RFSET from this pin to GND sets the switching frequency, and the pin can also be used to synchronize to an external switching frequency."
},
{
"number": "6",
"name": "COMP",
"type": "passive",
"description": "Output of the error amplifier and compensation node; connect a type-2 feedback network from this pin to AGND for loop compensation."
},
{
"number": "7",
"name": "AGND",
"type": "power_in",
"description": "Analog ground for noise-sensitive components, especially COMP, and connected to the thermal pad."
},
{
"number": "8",
"name": "VDD",
"type": "power_out",
"description": "Output of the internal LDO; connect a 0.47 µF decoupling capacitor between this pin and AGND."
},
{
"number": "9",
"name": "FLAG",
"type": "output",
"description": "Active-low open-drain pin indicating that system attention is required, such as during startup or a fault; connect a 10 to 100 kΩ pull-up to the target logic level."
},
{
"number": "10",
"name": "LED1",
"type": "passive",
"description": "LED current sink channel 1, up to 60 mA; any unused LEDx pin should be connected to GND through a 4.7 kΩ resistor."
},
{
"number": "11",
"name": "LED2",
"type": "passive",
"description": "LED current sink channel 2, up to 60 mA; any unused LEDx pin should be connected to GND through a 4.7 kΩ resistor."
},
{
"number": "12",
"name": "LED3",
"type": "passive",
"description": "LED current sink channel 3, up to 60 mA; any unused LEDx pin should be connected to GND through a 4.7 kΩ resistor."
},
{
"number": "13",
"name": "LED4",
"type": "passive",
"description": "LED current sink channel 4, up to 60 mA; any unused LEDx pin should be connected to GND through a 4.7 kΩ resistor."
},
{
"number": "14",
"name": "LED5",
"type": "passive",
"description": "LED current sink channel 5, up to 60 mA; any unused LEDx pin should be connected to GND through a 4.7 kΩ resistor."
},
{
"number": "15",
"name": "AGND",
"type": "power_in",
"description": "Analog ground for noise-sensitive components, especially COMP, and connected to the thermal pad."
},
{
"number": "16",
"name": "LED6",
"type": "passive",
"description": "LED current sink channel 6, up to 60 mA; any unused LEDx pin should be connected to GND through a 4.7 kΩ resistor."
},
{
"number": "17",
"name": "LED7",
"type": "passive",
"description": "LED current sink channel 7, up to 60 mA; any unused LEDx pin should be connected to GND through a 4.7 kΩ resistor."
},
{
"number": "18",
"name": "LED8",
"type": "passive",
"description": "LED current sink channel 8, up to 60 mA; any unused LEDx pin should be connected to GND through a 4.7 kΩ resistor."
},
{
"number": "19",
"name": "NC",
"type": "unconnected",
"description": "No connect; terminate to GND through a 4.7 kΩ resistor and do not short directly to GND."
},
{
"number": "20",
"name": "NC",
"type": "unconnected",
"description": "No connect; terminate to GND through a 4.7 kΩ resistor and do not short directly to GND."
},
{
"number": "21",
"name": "GPO2",
"type": "output",
"description": "General purpose open-drain output 2, programmable by internal register."
},
{
"number": "22",
"name": "GPO1",
"type": "output",
"description": "General purpose open-drain output 1, programmable by internal register."
},
{
"number": "23",
"name": "SDA",
"type": "bidirectional",
"description": "I2C data signal."
},
{
"number": "24",
"name": "SCL",
"type": "input",
"description": "I2C clock signal."
},
{
"number": "25",
"name": "ADDR",
"type": "input",
"description": "Four-level input that sets up to 4 physical IC addresses based on the voltage level set by a resistor to GND."
},
{
"number": "26",
"name": "PGND",
"type": "power_in",
"description": "Power ground for the internal NMOS switching device; connect to the output capacitor ground and to the thermal pad."
},
{
"number": "27",
"name": "OVP",
"type": "input",
"description": "Connect to output voltage VOUT to provide output overvoltage protection (OVP) and undervoltage protection (UVP)."
},
{
"number": "28",
"name": "SW",
"type": "passive",
"description": "Drain of the internal NMOS switch of the boost converter."
},
{
"number": "29",
"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": [],
"pages_sent": 8,
"cost_usd": 0.0649,
"at": "2026-11-05T17:20:42"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/36e817d4a09f91c563ddc491286ecaa7.pdf",
"pages": 65,
"sha256": "d6a7732d3abb26ac",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 29,
"described": 29,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
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"file": "a8522klptr-t.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "ff242f1d3be9d09e7f929707a2c5b1ee974a4f882053b04bcdb1cd2cb21223ef",
"checked": "2026-11-05",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "a8522klptr-t-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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9.7,
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],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "f82a912a3590f64f4326b1945f954e37a14d1ad2c267a830b71f58a713d1772c",
"checked": "2026-11-05",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}