component
PL8405Q
Public Made by Adomby adom
POWLICON DC-DC Converters, QFN-48(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "pl8405q",
"title": "PL8405Q",
"brief": "POWLICON DC-DC Converters, QFN-48(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"power supply chip",
"pl8405q",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "PL8405Q",
"manufacturer": "POWLICON",
"package": "QFN-48(6x6)",
"pin_count": 49,
"category": "Power Supply Chip",
"subcategory": "DC-DC Converters",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590340215799128064",
"parts": {
"symbol": "pl8405q.kicad_sym",
"footprint": "pl8405q.kicad_mod",
"model_3d": "pl8405q-hero.glb",
"model_3d_plain": "pl8405q-etched.glb",
"model_3d_step": "pl8405q-etched.step",
"model_3d_step_plain": "pl8405q.step",
"lbr": "pl8405q.lbr"
},
"distributor_links": {
"lcsc": "C5150981"
},
"distributor_check": {
"checked_at": "2026-10-18T09:27:44Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "BST1",
"type": "passive",
"description": "Boost pin for the high side MOSFET driver; BST to SW absolute maximum is -0.3 V to 7 V."
},
{
"number": "2",
"name": "D1",
"type": "bidirectional",
"description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
},
{
"number": "3",
"name": "VBAT",
"type": "power_in",
"description": "Battery-side supply pin with a 4.5 V to 32 V battery voltage range in the electrical characteristics; the pin description text reads 'Connect to the VBUS rail'."
},
{
"number": "4",
"name": "CSP1",
"type": "input",
"description": "Positive input of the input current sense; CSP1 to CSN1 absolute maximum is -0.3 V to 0.6 V."
},
{
"number": "5",
"name": "CSN1",
"type": "input",
"description": "Minus input of the input current sense; CSP1 to CSN1 absolute maximum is -0.3 V to 0.6 V."
},
{
"number": "6",
"name": "EN",
"type": "input",
"description": "Logic high enables the converter (operation threshold 1.1 V to 1.3 V); logic low disables everything except the LDO."
},
{
"number": "7",
"name": "PGND",
"type": "power_in",
"description": "Power ground."
},
{
"number": "8",
"name": "CELLS",
"type": "input",
"description": "Connect a resistor divider between VDD and GND to program the number of battery cells (1 to 6)."
},
{
"number": "9",
"name": "OTG",
"type": "input",
"description": "Connect to GND for battery charging mode and to VDD for battery discharging mode; OTG high threshold is 1.2 V."
},
{
"number": "10",
"name": "TS",
"type": "input",
"description": "Battery temperature sense input, used with a voltage divider to set the protection trigger point."
},
{
"number": "11",
"name": "VDD",
"type": "power_out",
"description": "5.4 V power supply for the PL8405Q control core when VBAT is 15 V."
},
{
"number": "12",
"name": "VADJ",
"type": "input",
"description": "Accepts a 0-2 V analog voltage or PWM signal to program the VREF reference; connecting it to VDD forces VREF to 2 V."
},
{
"number": "13",
"name": "IADJ",
"type": "input",
"description": "Accepts a 0-2 V analog voltage or PWM signal to program the IREF reference; connecting it to VDD forces IREF to 2 V."
},
{
"number": "14",
"name": "VSET",
"type": "passive",
"description": "A resistor to GND selects the battery cell type (4.2 V, 4.35 V, 4.4 V or 4.5 V) when OTG is low; above 1.2 V on OTG it carries a voltage proportional to the CSP2-CSN2 difference."
},
{
"number": "15",
"name": "IREF",
"type": "output",
"description": "Reference voltage for the input and output current limiting loop."
},
{
"number": "16",
"name": "VREF",
"type": "power_in",
"description": "Reference voltage for the voltage control loop, 2 V in discharge mode and 1.8 V in charge mode when VADJ is tied to VDD."
},
{
"number": "17",
"name": "BRCOM",
"type": "output",
"description": "Battery internal resistance compensation pin whose voltage is proportional to the CSP1-CSN1 difference for charging current monitoring."
},
{
"number": "18",
"name": "LDO",
"type": "power_out",
"description": "Low quiescent current 5 V/55 mA LDO powered from VBAT that supplies the system MCU and stays active when EN is low."
},
{
"number": "19",
"name": "STAT",
"type": "output",
"description": "Charging status display when OTG is low and power good signal when OTG is high."
},
{
"number": "20",
"name": "AGND",
"type": "power_in",
"description": "Analog ground; connect PGND and AGND together at the thermal pad under the IC."
},
{
"number": "21",
"name": "FREQ",
"type": "input",
"description": "Switching frequency select: GND gives 150 kHz, VDD gives 300 kHz, and a resistor divider gives 600 kHz or 1200 kHz."
},
{
"number": "22",
"name": "COMP",
"type": "passive",
"description": "Error amplifier output."
},
{
"number": "23",
"name": "VREG",
"type": "input",
"description": "Resistor divider programs the VBUS regulation voltage; the VREG loop reduces charging current when VBUS is pulled down to the VREG setpoint of 1.2 V in charge mode."
},
{
"number": "24",
"name": "FB2",
"type": "input",
"description": "VBUS voltage feedback that regulates to 2 V in discharge mode through a resistor divider between VBUS and GND."
},
{
"number": "25",
"name": "CSN2",
"type": "input",
"description": "Minus input of the output current sense; CSP2 to CSN2 absolute maximum is -0.3 V to 0.6 V."
},
{
"number": "26",
"name": "CSP2",
"type": "input",
"description": "Positive input of the output current sense; CSP2 to CSN2 absolute maximum is -0.3 V to 0.6 V."
},
{
"number": "27",
"name": "VBUS",
"type": "power_in",
"description": "Connect to the VBUS rail; VBUS operating range is 2 V to 30 V in the electrical characteristics."
},
{
"number": "28",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "29",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "30",
"name": "PGND",
"type": "power_in",
"description": "Power ground."
},
{
"number": "31",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "32",
"name": "NC",
"type": "unconnected",
"description": "Not connected."
},
{
"number": "33",
"name": "SW1",
"type": "output",
"description": "Switching point 1 of the power stage; SW absolute maximum is -0.3 V to 40 V."
},
{
"number": "34",
"name": "SW1",
"type": "output",
"description": "Switching point 1 of the power stage; SW absolute maximum is -0.3 V to 40 V."
},
{
"number": "35",
"name": "SW1",
"type": "output",
"description": "Switching point 1 of the power stage; SW absolute maximum is -0.3 V to 40 V."
},
{
"number": "36",
"name": "VCC",
"type": "power_out",
"description": "6.6 V power supply for the high side and low side gate drivers."
},
{
"number": "37",
"name": "PGND",
"type": "power_in",
"description": "Power ground."
},
{
"number": "38",
"name": "PGND",
"type": "power_in",
"description": "Power ground."
},
{
"number": "39",
"name": "PGND",
"type": "power_in",
"description": "Power ground."
},
{
"number": "40",
"name": "PGND",
"type": "power_in",
"description": "Power ground."
},
{
"number": "41",
"name": "PGND",
"type": "power_in",
"description": "Power ground."
},
{
"number": "42",
"name": "SW1",
"type": "output",
"description": "Switching point 1 of the power stage; SW absolute maximum is -0.3 V to 40 V."
},
{
"number": "43",
"name": "D1",
"type": "bidirectional",
"description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
},
{
"number": "44",
"name": "D1",
"type": "bidirectional",
"description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
},
{
"number": "45",
"name": "D1",
"type": "bidirectional",
"description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
},
{
"number": "46",
"name": "D1",
"type": "bidirectional",
"description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
},
{
"number": "47",
"name": "D1",
"type": "bidirectional",
"description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
},
{
"number": "48",
"name": "D1",
"type": "bidirectional",
"description": "Power node of VBAT that connects to the battery input port, working as converter output when charging and input when discharging."
},
{
"number": "49",
"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 pin description table says VBAT should 'Connect to the VBUS rail', which contradicts the pin nam; Pin 42 is assigned to SW1 in the pin description table, while the D1 entry lists pins 2 and 43-48. F; SW1 pin assignment is taken from the pin description table; Fig. 3 text extraction is scrambled and ",
"exposed pad 49 added from the footprint"
],
"pages_sent": 14,
"cost_usd": 0.0973,
"at": "2026-10-18T09:22:59"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590340215799128064",
"pages": 14,
"sha256": "a32a5014920fede9",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 49,
"described": 49,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "pl8405q.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.02,
6.02,
0.9
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "d3b4e3ce9915b5749cd764efb424a331e5549b915a06dc85fc32db0d77865f07",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "pl8405q-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.02,
6.02,
0.9
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "d8900dddf1dc13d93b7e2981d4594e365b1cbafc6f6c59597c9f81679fa9631d",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "POWLICON",
"Package": "QFN-48(6x6)",
"Category": "Power Supply Chip",
"Pins": "49"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "a32a5014920fede99423675148bee01a5dbfa4f009cf490158aa80b8a1efd6a0",
"rows": [
{
"name": "Absolute max: VBAT, VBUS, CSN1, CSN2, CSP1, CSP2, SW to GND",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 40,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Absolute max: BST to SW",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Absolute max: VCC to GND",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
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"source_page": 4,
"source": "datasheet"
},
{
"name": "Absolute max: CSP1 to CSN1",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 0.6,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Absolute max: CSP2 to CSN2",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 0.6,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Absolute max: VBAT to CSP1, CSN1",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 0.6,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Absolute max: VBUS to CSP2, CSN2",
"symbol": "",
"kind": "absolute_maximum",
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"min": -0.3,
"typ": null,
"max": 0.6,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Absolute max: Other pins to GND",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Storage temperature range",
"symbol": "TST",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Junction temperature",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Lead temperature",
"symbol": "TL",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 260,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "ESD HBM",
"symbol": "VESD",
"kind": "absolute_maximum",
"unit": "kV",
"min": null,
"typ": null,
"max": 2,
"conditions": "Human body model",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Input voltages VBAT, VBUS (recommended operating)",
"symbol": "VBAT, VBUS",
"kind": "recommended_operating",
"unit": "V",
"min": 3.6,
"typ": null,
"max": 32,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Operating junction temperature range",
"symbol": "TJ",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Battery voltage",
"symbol": "VBAT",
"kind": "electrical",
"unit": "V",
"min": 4.5,
"typ": null,
"max": 32,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Bus line voltage",
"symbol": "VBUS",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": null,
"max": 30,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "EN operation threshold",
"symbol": "VEN_UV",
"kind": "electrical",
"unit": "V",
"min": 1.1,
"typ": 1.2,
"max": 1.3,
"conditions": "Operation Threshold",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VBAT shutdown current",
"symbol": "IQ_VBAT",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": 15,
"max": null,
"conditions": "EN=0V, VBAT=7.2V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VBAT supply current",
"symbol": "",
"kind": "electrical",
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"min": null,
"typ": 1000,
"max": null,
"conditions": "No Switching, FB=2.1V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VBUS shutdown current",
"symbol": "IQ_VBUS",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": 15,
"max": null,
"conditions": "EN=0V, VBUS=7.2V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VBUS supply current",
"symbol": "",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": 1200,
"max": null,
"conditions": "No Switching, battery fully charged",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VCC driver power supply voltage",
"symbol": "VVCC",
"kind": "electrical",
"unit": "V",
"min": null,
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