component
A4919GETTR-5-T
Public Made by Adomby adom
Allegro MicroSystems, LLC Gate Drive ICs, QFN-28-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"slug": "a4919gettr-5-t",
"title": "A4919GETTR-5-T",
"brief": "Allegro MicroSystems, LLC Gate Drive ICs, QFN-28-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"component": {
"mpn": "A4919GETTR-5-T",
"manufacturer": "Allegro MicroSystems, LLC",
"package": "QFN-28-EP(5x5)",
"pin_count": 29,
"category": "Power Management ICs",
"subcategory": "Gate Drive ICs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f2ee69e56757a8a1d34389bdaead8365.pdf",
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"pins": [
{
"number": "1",
"name": "VBRG",
"type": "input",
"description": "Sense input to the top of the external MOSFET bridge that allows accurate measurement of the voltage at the drains of the high-side MOSFETs."
},
{
"number": "2",
"name": "GND",
"type": "power_in",
"description": "Analog reference, digital, and power ground, to be connected to supply ground."
},
{
"number": "3",
"name": "V5",
"type": "power_out",
"description": "5 V LDO regulator output for external circuitry only, with IV5 < 70 mA at VBB > 6 V, 5 mA < IV5 < 25 mA giving 4.9 to 5.2 V, an overcurrent limit of 130 to 260 mA, and at least 1 µF with ESR of no more than 250 mΩ fitted to GND."
},
{
"number": "4",
"name": "VDSTH",
"type": "input",
"description": "Drain-source fault threshold programming pin where an external analog voltage sets the VDS fault threshold, reporting is disabled if driven below VDSD, and the internal value VDSTHI is used if driven above its analog input range."
},
{
"number": "5",
"name": "FAULT",
"type": "output",
"description": "Open-drain active-high programmable diagnostic output that may be pulled up by an external resistor to a maximum of 5.5 V."
},
{
"number": "6",
"name": "AHI",
"type": "input",
"description": "Logic input for the phase A high-side gate drive, where a logic high commands the high-side gate drive to be activated."
},
{
"number": "7",
"name": "ALO",
"type": "input",
"description": "Logic input for the phase A low-side gate drive, where a logic high commands the low-side gate drive to be activated."
},
{
"number": "8",
"name": "BHI",
"type": "input",
"description": "Logic input for the phase B high-side gate drive, where a logic high commands the high-side gate drive to be activated."
},
{
"number": "9",
"name": "BLO",
"type": "input",
"description": "Logic input for the phase B low-side gate drive, where a logic high commands the low-side gate drive to be activated."
},
{
"number": "10",
"name": "CHI",
"type": "input",
"description": "Logic input for the phase C high-side gate drive, where a logic high commands the high-side gate drive to be activated."
},
{
"number": "11",
"name": "CLO",
"type": "input",
"description": "Logic input for the phase C low-side gate drive, where a logic high commands the low-side gate drive to be activated."
},
{
"number": "12",
"name": "LSS",
"type": "passive",
"description": "Low-side return path for discharging the MOSFET gate capacitance, connected to the common sources of the low-side MOSFETs through a low-impedance PCB trace."
},
{
"number": "13",
"name": "GLC",
"type": "output",
"description": "Low-side gate-drive output for the phase C external N-channel MOSFET."
},
{
"number": "14",
"name": "GHC",
"type": "output",
"description": "High-side gate-drive output for the phase C external N-channel MOSFET."
},
{
"number": "15",
"name": "SC",
"type": "passive",
"description": "Phase C motor connection that senses the switched load voltage and forms the negative supply for the floating high-side driver."
},
{
"number": "16",
"name": "CC",
"type": "passive",
"description": "Phase C bootstrap capacitor connection and positive supply for the phase C high-side gate driver."
},
{
"number": "17",
"name": "GLB",
"type": "output",
"description": "Low-side gate-drive output for the phase B external N-channel MOSFET."
},
{
"number": "18",
"name": "GHB",
"type": "output",
"description": "High-side gate-drive output for the phase B external N-channel MOSFET."
},
{
"number": "19",
"name": "SB",
"type": "passive",
"description": "Phase B motor connection that senses the switched load voltage and forms the negative supply for the floating high-side driver."
},
{
"number": "20",
"name": "CB",
"type": "passive",
"description": "Phase B bootstrap capacitor connection and positive supply for the phase B high-side gate driver."
},
{
"number": "21",
"name": "GLA",
"type": "output",
"description": "Low-side gate-drive output for the phase A external N-channel MOSFET."
},
{
"number": "22",
"name": "GHA",
"type": "output",
"description": "High-side gate-drive output for the phase A external N-channel MOSFET."
},
{
"number": "23",
"name": "SA",
"type": "passive",
"description": "Phase A motor connection that senses the switched load voltage and forms the negative supply for the floating high-side driver."
},
{
"number": "24",
"name": "CA",
"type": "passive",
"description": "Phase A bootstrap capacitor connection and positive supply for the phase A high-side gate driver."
},
{
"number": "25",
"name": "VREG",
"type": "power_out",
"description": "Regulated gate-drive supply, nominally 13 V, that powers the low-side drivers and charges the bootstrap capacitors and requires a sufficiently large storage capacitor."
},
{
"number": "26",
"name": "CP2",
"type": "passive",
"description": "Charge-pump capacitor connection, requiring a minimum 220 nF capacitor (typically 470 nF) between CP1 and CP2."
},
{
"number": "27",
"name": "CP1",
"type": "passive",
"description": "Charge-pump capacitor connection, requiring a minimum 220 nF capacitor (typically 470 nF) between CP1 and CP2."
},
{
"number": "28",
"name": "VBB",
"type": "power_in",
"description": "Main power supply for all device functions, specified from 7 to 50 V and functional down to 5.5 V with reduced gate drive, with absolute maximum rating of −0.3 to 50 V."
},
{
"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": [
"extractor flagged: Pin 3 is printed as 'V3 / V5 / VDDM' in the shared terminal list; it is assigned to V5 here because ; The datasheet does not state the electrical connection or function of the exposed thermal pad, so th; The LSS type was set to passive as a return path; the datasheet does not classify it as ground or po",
"exposed pad 29 added from the footprint",
"dropped thermal pad ['EP'] absent from footprint",
"12/29 pins cited to the wrong page (name found elsewhere): ['14:GHC@p10', '17:GLB@p10', '18:GHB@p10', '19:SB@p10']"
],
"pages_sent": 10,
"cost_usd": 0.0842,
"at": "2026-10-31T00:27:31"
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"sha256": "c5982931c39e745c",
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"described": 29,
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"refuses_to_fabricate": true
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"metadata": {
"specs": {
"Manufacturer": "Allegro MicroSystems, LLC",
"Package": "QFN-28-EP(5x5)",
"Category": "Power Management ICs",
"Pins": "29"
},
"appearance": {
"contacts": {
"quote": "pad. Both packages are lead (Pb) free, with 100% matte-tin leadframe plating (suffix T).",
"page": 1,
"doc": "ds.pdf",
"plating": "tin"
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"rows": [
{
"name": "Load Supply Voltage",
"symbol": "VBB",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 50,
"conditions": "With respect to GND",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Logic Monitor or Supply",
"symbol": "VDDM, V3, V5",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 7,
"conditions": "V3 or V5 with LDO regulator present; VDDM without LDO",
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"source": "datasheet"
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{
"name": "Terminal VREG",
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"kind": "absolute_maximum",
"unit": "V",
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"typ": null,
"max": 16,
"conditions": "",
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{
"name": "Logic Inputs",
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"max": 6.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "Terminal VBRG",
"symbol": "VBRG",
"kind": "absolute_maximum",
"unit": "V",
"min": -5,
"typ": null,
"max": 55,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "Terminal LSS",
"symbol": "LSS",
"kind": "absolute_maximum",
"unit": "V",
"min": -4,
"typ": null,
"max": 6.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "Terminals SA, SB, SC",
"symbol": "SA, SB, SC",
"kind": "absolute_maximum",
"unit": "V",
"min": -5,
"typ": null,
"max": 55,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "Terminals GLA, GLB, GLC",
"symbol": "GLA, GLB, GLC",
"kind": "absolute_maximum",
"unit": "V",
"min": -5,
"typ": null,
"max": 16,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Terminal FAULT",
"symbol": "FAULT",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Terminal VDSTH",
"symbol": "VDSTH",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Ambient Operating Temperature Range",
"symbol": "TA",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 105,
"conditions": "Limited by power dissipation",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Maximum Continuous Junction Temperature",
"symbol": "TJ(max)",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 165,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "Transient Junction Temperature",
"symbol": "TtJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 175,
"conditions": "Overtemperature event not exceeding 10 seconds, lifetime not exceeding 10 hours",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Storage Temperature Range",
"symbol": "Tstg",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
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{
"name": "VBB Functional Operating Range",
"symbol": "VBB",
"kind": "recommended_operating",
"unit": "V",
"min": 5.5,
"typ": null,
"max": 50,
"conditions": "Correct function, parameters not guaranteed",
"source_page": 7,
"source": "datasheet"
},
{
"name": "VBB Quiescent Current",
"symbol": "IBBQ",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 10,
"max": 14,
"conditions": "Operational mode, outputs low, VBB = 12 V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "VREG Output Voltage",
"symbol": "VREG",
"kind": "electrical",
"unit": "V",
"min": 12.5,
"typ": 13,
"max": 13.75,
"conditions": "VBB > 9 V, IREG = 0 to 15 mA",
"source_page": 7,
"source": "datasheet"
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{
"name": "VREG Output Voltage",
"symbol": "VREG",
"kind": "electrical",
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"min": 12,
"typ": 13,
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"conditions": "7.5 V < VBB ≤ 9 V, IREG = 0 to 10 mA",
"source_page": 7,
"source": "datasheet"
},
{
"name": "VREG Output Voltage",
"symbol": "VREG",
"kind": "electrical",
"unit": "V",
"min": 8.5,
"typ": 9.5,
"max": null,
"conditions": "5.5 V < VBB ≤ 6 V, IREG < 8 mA",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Bootstrap Diode Forward Voltage",
"symbol": "VfBOOT",
"kind": "electrical",
"unit": "V",
"min": 0.4,
"typ": 0.7,
"max": 1,
"conditions": "ID = 10 mA",
"source_page": 7,
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},
{
"name": "Bootstrap Diode Forward Voltage",
"symbol": "VfBOOT",
"kind": "electrical",
"unit": "V",
"min": 1.5,
"typ": 2.2,
"max": 3.1,
"conditions": "ID = 100 mA",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Bootstrap Diode Resistance",
"symbol": "rD",
"kind": "electrical",
"unit": "Ω",
"min": 6,
"typ": 13,
"max": 28,
"conditions": "rD(100mA) = (VfBOOT(150mA) – VfBOOT(50mA)) / 100 (mA)",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Bootstrap Diode Current Limit",
"symbol": "IDBOOT",
"kind": "electrical",
"unit": "mA",
"min": 250,
"typ": 500,
"max": 750,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Pull-Up On Resistance",
"symbol": "RDS(on)UP",
"kind": "electrical",
"unit": "Ω",
"min": 5,
"typ": 8,
"max": 13,
"conditions": "TJ = 25°C, IGHx = –150 mA",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Pull-Down On Resistance",
"symbol": "RDS(on)DN",
"kind": "electrical",
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"typ": 2.4,
"max": 4.6,
"conditions": "TJ = 25°C, IGLx = 150 mA",
"source_page": 7,
"source": "datasheet"
},
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