component
A4919GETTR-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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{
"schema_version": 1,
"type": "component",
"slug": "a4919gettr-t",
"title": "A4919GETTR-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.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
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"power management ics",
"a4919gettr-t",
"factory-2.0.0",
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],
"component": {
"mpn": "A4919GETTR-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",
"parts": {
"symbol": "a4919gettr-t.kicad_sym",
"footprint": "a4919gettr-t.kicad_mod",
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"model_3d_step": "a4919gettr-t-etched.step",
"model_3d_step_plain": "a4919gettr-t.step",
"lbr": "a4919gettr-t.lbr"
},
"distributor_links": {
"lcsc": "C2677042",
"digikey": "620-1978-2-ND",
"mouser": "250-A4919GETTR-T"
},
"distributor_check": {
"checked_at": "2026-10-31T00:25:44Z",
"source": "Component Ocean /api/assign-pns",
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"pn": "620-1978-2-ND",
"status": "found",
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"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "VBRG",
"type": "input",
"description": "Sense input to the top of the external MOSFET bridge for measuring high-side drain voltage; absolute maximum rating is -5 to 55 V with respect to GND."
},
{
"number": "2",
"name": "GND",
"type": "power_in",
"description": "Analog reference, digital and power ground that must be connected to the supply ground; absolute maximum rating is -0.3 to 7 V."
},
{
"number": "3",
"name": "VDDM",
"type": "input",
"description": "Logic supply monitor input on the no-LDO variant that must be connected to the system logic supply; an unlatched fault is set below VDDUV (2.7 V typ) and gate drives are disabled below VGDD (1.5 V typ), with a 60 kΩ typical internal pull-down; absolute maximum rating is -0.3 to 7 V."
},
{
"number": "4",
"name": "VDSTH",
"type": "input",
"description": "Drain-source fault threshold programming input in which VDS fault reporting is disabled if driven below VDSD; absolute maximum rating is -0.3 to 6.5 V."
},
{
"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; absolute maximum rating is -0.3 to 6.5 V."
},
{
"number": "6",
"name": "AHI",
"type": "input",
"description": "Logic input that commands the phase A high-side gate drive to activate when logic high; absolute maximum rating is -0.3 to 6.5 V."
},
{
"number": "7",
"name": "ALO",
"type": "input",
"description": "Logic input that commands the phase A low-side gate drive to activate when logic high; absolute maximum rating is -0.3 to 6.5 V."
},
{
"number": "8",
"name": "BHI",
"type": "input",
"description": "Logic input that commands the phase B high-side gate drive to activate when logic high; absolute maximum rating is -0.3 to 6.5 V."
},
{
"number": "9",
"name": "BLO",
"type": "input",
"description": "Logic input that commands the phase B low-side gate drive to activate when logic high; absolute maximum rating is -0.3 to 6.5 V."
},
{
"number": "10",
"name": "CHI",
"type": "input",
"description": "Logic input that commands the phase C high-side gate drive to activate when logic high; absolute maximum rating is -0.3 to 6.5 V."
},
{
"number": "11",
"name": "CLO",
"type": "input",
"description": "Logic input that commands the phase C low-side gate drive to activate when logic high; absolute maximum rating is -0.3 to 6.5 V."
},
{
"number": "12",
"name": "LSS",
"type": "passive",
"description": "Low-side return path for discharging low-side MOSFET gate capacitance, connected to the common low-side sources through a low-impedance trace; absolute maximum rating is -4 to 6.5 V."
},
{
"number": "13",
"name": "GLC",
"type": "output",
"description": "Low-side gate-drive output for the phase C external N-channel MOSFET; absolute maximum rating is -5 to 16 V."
},
{
"number": "14",
"name": "GHC",
"type": "output",
"description": "High-side gate-drive output for the phase C external N-channel MOSFET; absolute maximum rating is Sx to Sx+15 V."
},
{
"number": "15",
"name": "SC",
"type": "passive",
"description": "Motor connection for phase C that senses the switched voltage and serves as the negative supply for the floating high-side driver; absolute maximum rating is -5 to 55 V."
},
{
"number": "16",
"name": "CC",
"type": "passive",
"description": "Bootstrap capacitor connection for phase C that supplies the high-side driver; absolute maximum rating is -0.3 to Sx + 15 V."
},
{
"number": "17",
"name": "GLB",
"type": "output",
"description": "Low-side gate-drive output for the phase B external N-channel MOSFET; absolute maximum rating is -5 to 16 V."
},
{
"number": "18",
"name": "GHB",
"type": "output",
"description": "High-side gate-drive output for the phase B external N-channel MOSFET; absolute maximum rating is Sx to Sx+15 V."
},
{
"number": "19",
"name": "SB",
"type": "passive",
"description": "Motor connection for phase B that senses the switched voltage and serves as the negative supply for the floating high-side driver; absolute maximum rating is -5 to 55 V."
},
{
"number": "20",
"name": "CB",
"type": "passive",
"description": "Bootstrap capacitor connection for phase B that supplies the high-side driver; absolute maximum rating is -0.3 to Sx + 15 V."
},
{
"number": "21",
"name": "GLA",
"type": "output",
"description": "Low-side gate-drive output for the phase A external N-channel MOSFET; absolute maximum rating is -5 to 16 V."
},
{
"number": "22",
"name": "GHA",
"type": "output",
"description": "High-side gate-drive output for the phase A external N-channel MOSFET; absolute maximum rating is Sx to Sx+15 V."
},
{
"number": "23",
"name": "SA",
"type": "passive",
"description": "Motor connection for phase A that senses the switched voltage and serves as the negative supply for the floating high-side driver; absolute maximum rating is -5 to 55 V."
},
{
"number": "24",
"name": "CA",
"type": "passive",
"description": "Bootstrap capacitor connection for phase A that supplies the high-side driver; absolute maximum rating is -0.3 to Sx + 15 V."
},
{
"number": "25",
"name": "VREG",
"type": "power_out",
"description": "Regulated gate-drive supply output nominally 13 V that needs a sufficiently large storage capacitor; absolute maximum rating is -0.3 to 16 V."
},
{
"number": "26",
"name": "CP2",
"type": "passive",
"description": "Charge-pump capacitor connection, with a minimum 220 nF (typically 470 nF) capacitor between CP1 and CP2; absolute maximum rating is -0.3 to 16 V."
},
{
"number": "27",
"name": "CP1",
"type": "passive",
"description": "Charge-pump capacitor connection, with a minimum 220 nF (typically 470 nF) capacitor between CP1 and CP2; absolute maximum rating is -0.3 to 16 V."
},
{
"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; absolute maximum rating is -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: The MPN A4919GETTR-T is the no-LDO variant (Regulator column is '–' in the selection guide), so pin ; The ET pinout diagrams on page 5 are garbled in the text extraction; the pin-number-to-name mapping ; The exposed thermal pad is labeled only 'PAD' and has no printed number; it is included as 'PAD' wit",
"exposed pad 29 added from the footprint",
"dropped thermal pad ['EP'] absent from footprint"
],
"pages_sent": 10,
"cost_usd": 0.0792,
"at": "2026-10-31T00:25:28"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/f2ee69e56757a8a1d34389bdaead8365.pdf",
"pages": 22,
"sha256": "c5982931c39e745c",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 29,
"described": 29,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
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"seat": "z = 0",
"extents_mm": [
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "e9d6d740f505b03e5aa0ac826330f9e269344b84656d051f50eb07ac162749eb",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
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"sha256": "94d5e2a7204a3c75e26ef500bb2809d4773bdf48bc59fac97d3bb73aa6c12844",
"checked": "2026-10-31",
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}
],
"package_dims": {
"package_code": "ET",
"source_page": 21,
"D": {
"nom_mm": 5,
"range_mm": [
null,
null
]
},
"E1": {
"nom_mm": 5,
"range_mm": [
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"e": {
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"range_mm": [
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"A": {
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"range_mm": [
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},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "a4919gettr-t.step",
"verdict": "PASS",
"reasons": [
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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"
},
"version": 1,
"datasheet_sha256": "c5982931c39e745c7f1604902a4d0cfa0fac39e12261bddb697dbda548477558"
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"characteristics": {
"version": 1,
"source": "datasheet",
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"rows": [
{
"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": "VBB Quiescent Current (Sleep mode)",
"symbol": "IBBS",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 15,
"conditions": "Sleep mode, VBB = 12 V (A4919x, No LDO, variant)",
"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"
},
{
"name": "VREG Output Voltage",
"symbol": "VREG",
"kind": "electrical",
"unit": "V",
"min": 12,
"typ": 13,
"max": 13.75,
"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,
"source": "datasheet"
},
{
"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": "Turn-Off Propagation Delay",
"symbol": "tP(off)",
"kind": "electrical",
"unit": "ns",
"min": 60,
"typ": 90,
"max": 180,
"conditions": "Input change to unloaded gate output change",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Turn-On Propagation Delay",
"symbol": "tP(on)",
"kind": "electrical",
"unit": "ns",
"min": 60,
"typ": 90,
"max": 180,
"conditions": "Input change to unloaded gate output change",
"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",
"unit": "Ω",
"min": 1.5,
"typ": 2.4,
"max": 4.6,
"conditions": "TJ = 25°C, IGLx = 150 mA",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Input Low Voltage",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.8,
"conditions": "",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Input High Voltage",
"symbol": "VIH",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": null,
"max": null,
"conditions": "",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Input Hysteresis",
"symbol": "VIhys",
"kind": "electrical",
"unit": "mV",
"min": 100,
"typ": 300,
"max": null,
"conditions": "",
"source_page": 8,
"source": "datasheet"
},
{
"name": "VDS Disable Voltage",
"symbol": "VDSD",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": 100,
"conditions": "",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Fault Disable Voltage",
"symbol": "VFLTD",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.5,
"conditions": "",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Output Low Voltage (FAULT)",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.2,
"max": 0.4,
"conditions": "IOL = 1 mA, no fault indicated",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Output Leakage (FAULT)",
"symbol": "IO",
"kind": "electrical",
"unit": "µA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "0 V < VO < 5.5 V, fault indicated",
"source_page": 8,
"source": "datasheet"
},
{
"name": "VREG Undervoltage Lockout (rising)",
"symbol": "VREGON",
"kind": "electrical",
"unit": "V",
"min": 7.5,
"typ": 8,
"max": 8.5,
"conditions": "VREG rising",
"source_page": 8,
"source": "datasheet"
},
{
"name": "VREG Undervoltage Lockout (falling)",
"symbol": "VREGOFF",
"kind": "electrical",
"unit": "V",
"min": 6.75,
"typ": 7.25,
"max": 7.75,
"conditions": "VREG falling",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Bootstrap Undervoltage Threshold",
"symbol": "VBOOTUV",
"kind": "electrical",
"unit": "%VREG",
"min": 62,
"typ": null,
"max": 75,
"conditions": "VBOOT falling, VCx – VSx",
"source_page": 8,
"source": "datasheet"
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{
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