component
A8519KLPTR-T
Public Made by Adomby adom
Allegro MicroSystems, LLC LED Drivers, TSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "a8519klptr-t",
"version": "0.1.0",
"type": "component",
"description": "Allegro MicroSystems, LLC LED Drivers, TSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"nixie tube driver-led driver",
"a8519klptr-t",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"a8519klptr-t.kicad_sym",
"a8519klptr-t.kicad_mod",
"a8519klptr-t.glb",
"a8519klptr-t.step",
"a8519klptr-t.lbr",
"docs/hero.png",
"docs/a8519klptr-t-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"a8519klptr-t-hero.glb",
"a8519klptr-t-hero.overlay.json",
"a8519klptr-t-etched.glb"
],
"component": {
"mpn": "A8519KLPTR-T",
"manufacturer": "Allegro MicroSystems, LLC",
"package": "TSSOP-20-EP",
"pin_count": 21,
"category": "Nixie Tube Driver/LED Driver",
"subcategory": "LED Drivers",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/7060911eeb3fe72209fbebced7eff0b1.pdf",
"parts": {
"symbol": "a8519klptr-t.kicad_sym",
"footprint": "a8519klptr-t.kicad_mod",
"model_3d": "a8519klptr-t-hero.glb",
"model_3d_plain": "a8519klptr-t-etched.glb",
"model_3d_step": "a8519klptr-t-etched.step",
"model_3d_step_plain": "a8519klptr-t.step",
"lbr": "a8519klptr-t.lbr"
},
"distributor_links": {
"lcsc": "C7208806",
"digikey": "620-A8519KLPTR-TTR-ND",
"mouser": "250-A8519KLPTR-T"
},
"distributor_check": {
"checked_at": "2026-10-30T22:40:54Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "620-A8519KLPTR-TTR-ND",
"status": "found"
},
"mouser": {
"pn": "250-A8519KLPTR-T",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "COMP",
"type": "passive",
"description": "Output of the error amplifier and compensation node; connect an Rz-Cz-Cp network from this pin to GND for control loop compensation."
},
{
"number": "2",
"name": "PGND",
"type": "power_in",
"description": "Power ground for the internal N-channel MOSFET switching device; connect to the PCB ground plane."
},
{
"number": "3",
"name": "OVP",
"type": "input",
"description": "Overvoltage protection input; connect an external resistor from VOUT to this pin to set the overvoltage protection level (OVP pin threshold 7 V to 9.5 V)."
},
{
"number": "4",
"name": "VOUT",
"type": "input",
"description": "Connect directly to the boost output voltage; maximum output voltage is 40 V."
},
{
"number": "5",
"name": "SW",
"type": "passive",
"description": "Drain of the internal N-channel MOSFET switch of the boost converter; the SW pin is rated -0.6 V to 42 V continuous."
},
{
"number": "6",
"name": "GATE",
"type": "output",
"description": "Gate driver output for control of an external P-channel MOSFET input disconnect switch."
},
{
"number": "7",
"name": "VSENSE",
"type": "input",
"description": "Connect to the negative side of the current sense resistor RSC; the threshold is measured as VIN minus VSENSE, with a fixed current sink for trip threshold adjustment."
},
{
"number": "8",
"name": "VIN",
"type": "power_in",
"description": "Input power to the IC and the positive input for the current sense resistor; the input voltage range is 4.5 V to 40 V."
},
{
"number": "9",
"name": "FAULT",
"type": "output",
"description": "Open-drain fault output that is pulled low when a fault occurs; connect a 100 kΩ resistor between this pin and the desired logic level voltage."
},
{
"number": "10",
"name": "CLKOUT",
"type": "output",
"description": "Logic output representing the internal boost oscillator switching frequency, allowing other converters to be synchronized to it."
},
{
"number": "11",
"name": "VDD",
"type": "power_out",
"description": "Output of the internal LDO bias regulator; connect a 1 µF decoupling capacitor between this pin and GND."
},
{
"number": "12",
"name": "APWM",
"type": "input",
"description": "Analog trimming or dimming input; applying a digital PWM signal to this pin adjusts the internal IISET current."
},
{
"number": "13",
"name": "PWM",
"type": "input",
"description": "Enables the IC when pulled high and controls LED intensity by pulse-width modulation; typical PWM dimming frequency is 100 Hz to 400 Hz."
},
{
"number": "14",
"name": "FSET",
"type": "input",
"description": "Frequency and synchronization pin; a resistor RFSET from this pin to GND sets the switching frequency, or an external clock from 320 kHz to 2.3 MHz synchronizes it with dithering disabled."
},
{
"number": "15",
"name": "ISET",
"type": "input",
"description": "Connect the RISET resistor between this pin and GND to set the desired LED current."
},
{
"number": "16",
"name": "AGND",
"type": "power_in",
"description": "LED current ground; connect to the PCB ground plane."
},
{
"number": "17",
"name": "LED1",
"type": "input",
"description": "LED current sink #1; connect the cathode of the LED string to this pin, and terminate it to GND through 3.09 kΩ if unused."
},
{
"number": "18",
"name": "LED2",
"type": "input",
"description": "LED current sink #2; connect the cathode of the LED string to this pin, and terminate it to GND through 3.09 kΩ if unused."
},
{
"number": "19",
"name": "LED3",
"type": "input",
"description": "LED current sink #3; connect the cathode of the LED string to this pin, and terminate it to GND through 3.09 kΩ if unused."
},
{
"number": "20",
"name": "LED4",
"type": "input",
"description": "LED current sink #4; connect the cathode of the LED string to this pin, and terminate it to GND through 3.09 kΩ if unused."
},
{
"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: The exposed thermal pad on the 20-pin TSSOP (suffix LP) is not a numbered pin and is omitted from pi"
],
"pages_sent": 6,
"cost_usd": 0.0235,
"at": "2026-10-30T22:40:44"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/7060911eeb3fe72209fbebced7eff0b1.pdf",
"pages": 38,
"sha256": "f15a7280a8b54665",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 21,
"described": 21,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"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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],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "fd12d2314f48196f6f3c8cdbba1affe6b77255ff2aa96639bcf9d2f6444cca65",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "a8519klptr-t-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
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}
]
}
}