component
LTC4162EUFD-FSTM#PBF
Public Made by Adomby adom
Analog Devices Battery Management, QFN-28(4x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"type": "component",
"slug": "ltc4162eufd-fstm-pbf",
"title": "LTC4162EUFD-FSTM#PBF",
"brief": "Analog Devices Battery Management, QFN-28(4x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
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"factory-2.0.0",
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],
"component": {
"mpn": "LTC4162EUFD-FSTM#PBF",
"manufacturer": "Analog Devices",
"package": "QFN-28(4x5)",
"pin_count": 29,
"category": "Power Management (PMIC)",
"subcategory": "Battery Management",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590469465470373888",
"parts": {
"symbol": "ltc4162eufd-fstm-pbf.kicad_sym",
"footprint": "ltc4162eufd-fstm-pbf.kicad_mod",
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"model_3d_step_plain": "ltc4162eufd-fstm-pbf.step",
"lbr": "ltc4162eufd-fstm-pbf.lbr"
},
"distributor_links": {
"lcsc": "C3682819",
"digikey": "505-LTC4162EUFD-FSTM#PBF-ND",
"mouser": "584-4162EUFDFSTMPB"
},
"distributor_check": {
"checked_at": "2026-10-20T20:45:28Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "505-LTC4162EUFD-FSTM#PBF-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "584-4162EUFDFSTMPB",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "BOOST",
"type": "power_out",
"description": "Gate-drive bias for the high-side switch, pumped relative to SW and charged from INTVCC through an internal diode; requires a 22nF multilayer ceramic capacitor from SW to BOOST."
},
{
"number": "2",
"name": "INTVCC",
"type": "power_out",
"description": "Bypass pin for the internal 5V regulator that powers the analog circuitry; requires a 4.7µF multilayer ceramic capacitor to GND."
},
{
"number": "3",
"name": "VOUTA",
"type": "power_out",
"description": "Analog system power pin that powers the majority of internal circuits; requires a 0.1µF multilayer ceramic capacitor to GND."
},
{
"number": "4",
"name": "CLN",
"type": "input",
"description": "Negative terminal connection of the sense resistor that measures and regulates input current by limiting charge current."
},
{
"number": "5",
"name": "CLP",
"type": "input",
"description": "Positive terminal connection of the sense resistor that measures and regulates input current by limiting charge current."
},
{
"number": "6",
"name": "INFET",
"type": "output",
"description": "Gate control output for an input reverse-blocking external N-channel MOSFET between VIN and VOUT."
},
{
"number": "7",
"name": "VIN",
"type": "power_in",
"description": "Supply voltage detection and INFET charge-pump supply for the PowerPath; requires a 0.1µF multilayer ceramic capacitor to GND."
},
{
"number": "8",
"name": "VCC2P5",
"type": "power_out",
"description": "Bypass pin for the internal 2.5V regulator that powers the internal logic; requires a 1µF multilayer ceramic capacitor to GND."
},
{
"number": "9",
"name": "NTCBIAS",
"type": "power_out",
"description": "NTC thermistor bias output that applies 1.2V during NTC measurement; connect a low-temperature-coefficient bias resistor equal to the thermistor nominal value between NTCBIAS and NTC."
},
{
"number": "10",
"name": "NTC",
"type": "input",
"description": "Thermistor input digitized to qualify battery charging and readable over I2C; requires a low-drift bias resistor from NTCBIAS and a thermistor to ground."
},
{
"number": "11",
"name": "RT",
"type": "passive",
"description": "Switching regulator frequency control pin; a resistor from RT to GND sets the internal oscillator frequency (fOSC 1.4 to 1.6MHz at RT = 63.4k)."
},
{
"number": "12",
"name": "SMBALERT",
"type": "output",
"description": "Open-drain interrupt output that pulls low when one or more programmable alerts is triggered."
},
{
"number": "13",
"name": "SCL",
"type": "input",
"description": "Open-drain clock input for the I2C port, with input levels scaled with respect to DVCC."
},
{
"number": "14",
"name": "SDA",
"type": "bidirectional",
"description": "Open-drain data input/output for the I2C port, with input levels scaled with respect to DVCC."
},
{
"number": "15",
"name": "DVCC",
"type": "power_in",
"description": "Logic supply for the I2C port that sets the SDA and SCL reference levels; the logic reference range is 1.8V to 5.5V."
},
{
"number": "16",
"name": "SYNC",
"type": "input",
"description": "Optional external clock input that the switching charger locks to, near the RT-programmed frequency; ground if the feature is not used."
},
{
"number": "17",
"name": "CELLS0",
"type": "input",
"description": "Cell-count selection strap used with CELLS1; must be tied to INTVCC, VCC2P5 or GND (see Table 5)."
},
{
"number": "18",
"name": "CELLS1",
"type": "input",
"description": "Cell-count selection strap used with CELLS0; must be tied to INTVCC, VCC2P5 or GND (see Table 5)."
},
{
"number": "19",
"name": "BATSENS+",
"type": "input",
"description": "Positive battery terminal sense pin that should be Kelvin-sensed; requires a 10µF multilayer ceramic capacitor to ground."
},
{
"number": "20",
"name": "CSN",
"type": "input",
"description": "Negative terminal connection of the current sense resistor used to measure and limit charge current."
},
{
"number": "21",
"name": "CSP",
"type": "input",
"description": "Positive terminal connection of the current sense resistor used to measure and limit charge current."
},
{
"number": "22",
"name": "BATFET",
"type": "output",
"description": "Gate control pin for a reverse-blocking external N-channel MOSFET between the battery and VOUT."
},
{
"number": "23",
"name": "PGND",
"type": "power_in",
"description": "Power ground pin that should connect to a copper pour forming the return for the VOUT bypass capacitor."
},
{
"number": "24",
"name": "PGND",
"type": "power_in",
"description": "Power ground pin that should connect to a copper pour forming the return for the VOUT bypass capacitor."
},
{
"number": "25",
"name": "SW",
"type": "output",
"description": "Switching regulator power transmission pin that delivers power from VOUT to the battery; the inductor connects from SW to the sense resistor at CSP."
},
{
"number": "26",
"name": "SW",
"type": "output",
"description": "Switching regulator power transmission pin that delivers power from VOUT to the battery; the inductor connects from SW to the sense resistor at CSP."
},
{
"number": "27",
"name": "VOUT",
"type": "power_in",
"description": "Switching regulator input pin that delivers power to the switching charger; bypassing these pins takes precedence over other layout considerations, with 10µF a good starting point."
},
{
"number": "28",
"name": "VOUT",
"type": "power_in",
"description": "Switching regulator input pin that delivers power to the switching charger; bypassing these pins takes precedence over other layout considerations, with 10µF a good starting point."
},
{
"number": "29",
"name": "AGND",
"type": "power_in",
"description": "Exposed pad analog ground that returns all analog circuitry; must be soldered to the PCB and connected to an analog ground pour common with PGND (pins 23 and 24)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
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"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 configuration diagram on page 3 is scrambled in the text extraction, so the pin-number-to-na; The datasheet does not give an explicit KiCad ERC type for these pins; types were inferred from thei; SW is described as a switching regulator power transmission pin with no explicit direction; typed as"
],
"pages_sent": 9,
"cost_usd": 0.0715,
"at": "2026-10-20T20:40:09"
},
"datasheet": {
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"pages": 52,
"sha256": "6aecc6c02aff81b7",
"source_tier": "lcsc"
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"cad": "KiCad official (CC-BY-SA 4.0)",
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"described": 29,
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"metadata": {
"specs": {
"Manufacturer": "Analog Devices",
"Package": "QFN-28(4x5)",
"Category": "Power Management (PMIC)",
"Pins": "29"
},
"appearance": {
"contacts": {
"quote": "PGND (Pins 23,24): Power ground pins. These pins should be connected to a copper pour that forms the return for",
"page": 11,
"doc": "ds.pdf",
"material": "copper"
},
"version": 1,
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"rows": [
{
"name": "Battery and input supply pins absolute maximum (BATSENS+, VIN, CSP, CSN, CLP, CLN, VOUT, VOUTA)",
"symbol": "BATSENS+, VIN, CSP, CSN, CLP, CLN, VOUT, VOUTA",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 36,
"conditions": "",
"source_page": 3,
"source": "datasheet"
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{
"name": "Sense pin differential absolute maximum (CSP to CSN, CLP to CLN)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 0.3,
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{
"name": "Logic pin absolute maximum (CELLSO, CELLS1, SYNC)",
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"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "DVCC absolute maximum",
"symbol": "DVCC",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "I2C pin absolute maximum (SDA, SCL, SMBALERT)",
"symbol": "SDA, SCL, SMBALERT",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "",
"source_page": 3,
"source": "datasheet"
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{
"name": "Switch pin current absolute maximum",
"symbol": "ISW",
"kind": "absolute_maximum",
"unit": "A",
"min": -3.5,
"typ": null,
"max": 3.5,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Operating junction temperature range",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "Notes 2, 4",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Storage temperature range",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 3,
"source": "datasheet"
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{
"name": "Electrical: input supply voltage",
"symbol": "VIN",
"kind": "electrical",
"unit": "V",
"min": 4.5,
"typ": null,
"max": 35,
"conditions": "l: over full operating junction temperature range",
"source_page": 4,
"source": "datasheet"
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{
"name": "Electrical: battery voltage",
"symbol": "VBAT",
"kind": "electrical",
"unit": "V",
"min": 2.7,
"typ": null,
"max": 35,
"conditions": "l: over full operating junction temperature range",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Battery drain current, terminated",
"symbol": "IBATSENS+",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 0.5,
"max": 1,
"conditions": "VIN – VBATSENS+ > VIN_DUVLO, Terminated",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Battery drain current, input below UVLO",
"symbol": "IBATSENS+",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 54,
"max": 100,
"conditions": "VIN – VBATSENS+ < VIN_DUVLO",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Battery drain current, ship mode",
"symbol": "IBATSENS+",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 2.8,
"max": 5,
"conditions": "VIN = 0, SHIPMODE Activated",
"source_page": 4,
"source": "datasheet"
},
{
"name": "VIN drain current, terminated",
"symbol": "IVIN",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 115,
"max": 200,
"conditions": "VIN – VBATSENS+ > VIN_DUVLO, Terminated",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Charge voltage range",
"symbol": "VCHARGE",
"kind": "electrical",
"unit": "V",
"min": 3.4125,
"typ": null,
"max": 3.8,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Charge voltage accuracy",
"symbol": "VCHARGE",
"kind": "tolerance",
"unit": "%",
"min": -0.5,
"typ": null,
"max": 0.5,
"conditions": "Per cell_count",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Charge voltage accuracy (l)",
"symbol": "VCHARGE",
"kind": "tolerance",
"unit": "%",
"min": -1.5,
"typ": null,
"max": 1.5,
"conditions": "Per cell_count; l",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Charge servo voltage range (VCSP – VCSN)",
"symbol": "ICHARGE",
"kind": "electrical",
"unit": "mV",
"min": 1,
"typ": null,
"max": 32,
"conditions": "ICHARGE = (VCSP – VCSN)/RSNSB; Note 5",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Charge current servo accuracy",
"symbol": "ICHARGE",
"kind": "tolerance",
"unit": "mV",
"min": -0.25,
"typ": null,
"max": 0.25,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Charge current servo accuracy (l)",
"symbol": "ICHARGE",
"kind": "tolerance",
"unit": "mV",
"min": -0.75,
"typ": null,
"max": 0.75,
"conditions": "l",
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},
{
"name": "Input current servo voltage range (VCLP – VCLN)",
"symbol": "IINLIM",
"kind": "electrical",
"unit": "mV",
"min": 0.5,
"typ": null,
"max": 32,
"conditions": "IIN = (VCLP – VCLN)/RSNSI; Note 6",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Input current servo accuracy",
"symbol": "IINLIM",
"kind": "tolerance",
"unit": "mV",
"min": -0.2,
"typ": null,
"max": 0.2,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Input voltage limit (VINLIM) range",
"symbol": "VINLIM",
"kind": "electrical",
"unit": "V",
"min": 0.14,
"typ": null,
"max": 36,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "VINLIM full scale accuracy",
"symbol": "VINLIM",
"kind": "tolerance",
"unit": "%",
"min": -1,
"typ": null,
"max": 1,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Switching frequency",
"symbol": "fOSC",
"kind": "electrical",
"unit": "MHz",
"min": 1.4,
"typ": 1.5,
"max": 1.6,
"conditions": "RT = 63.4k; l",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Maximum duty cycle",
"symbol": "DMAX",
"kind": "electrical",
"unit": "%",
"min": null,
"typ": null,
"max": 99.5,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VIN charger enable undervoltage lockout rising threshold",
"symbol": "VIN_UVLO",
"kind": "electrical",
"unit": "V",
"min": 4.2,
"typ": 4.4,
"max": 4.6,
"conditions": "Rising Threshold",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VIN to BATSENS+ charger enable differential UVLO rising threshold",
"symbol": "VIN_DUVLO",
"kind": "electrical",
"unit": "mV",
"min": 100,
"typ": 150,
"max": 200,
"conditions": "Rising Threshold",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VIN charger disable overvoltage lockout rising threshold",
"symbol": "VIN_OVLO",
"kind": "electrical",
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