component
BQ29311PWR
Public Made by Adomby adom
Texas Instruments Battery Management ICs, TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "bq29311pwr",
"title": "BQ29311PWR",
"brief": "Texas Instruments Battery Management ICs, TSSOP-24. 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 supply chip",
"bq29311pwr",
"factory-2.0.0",
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],
"component": {
"mpn": "BQ29311PWR",
"manufacturer": "Texas Instruments",
"package": "TSSOP-24",
"pin_count": 24,
"category": "Power Supply Chip",
"subcategory": "Battery Management ICs",
"datasheet": "https://www.ti.com/lit/ds/symlink/bq29311.pdf",
"parts": {
"symbol": "bq29311pwr.kicad_sym",
"footprint": "bq29311pwr.kicad_mod",
"model_3d": "bq29311pwr-hero.glb",
"model_3d_plain": "bq29311pwr-etched.glb",
"model_3d_step": "bq29311pwr-etched.step",
"model_3d_step_plain": "bq29311pwr.step",
"lbr": "bq29311pwr.lbr"
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"distributor_links": {
"lcsc": "C2862866",
"digikey": "BQ29311PWR-ND",
"mouser": "595-BQ29311PWR"
},
"distributor_check": {
"checked_at": "2026-10-31T00:22:53Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "BQ29311PWR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "595-BQ29311PWR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "VCC",
"type": "power_in",
"description": "Diode protected BAT+ terminal and primary power source."
},
{
"number": "2",
"name": "VBAT",
"type": "power_in",
"description": "Battery positive terminal sense input for regulator shutdown, with recommended range 0 V to VCC."
},
{
"number": "3",
"name": "VC1",
"type": "input",
"description": "Sense voltage input and balance current input for the most positive cell; connected to VC2 in 3-cell applications."
},
{
"number": "4",
"name": "VC2",
"type": "input",
"description": "Sense voltage input for the second most positive cell, balance current input for that cell, and return balance current for the most positive cell."
},
{
"number": "5",
"name": "VC3",
"type": "input",
"description": "Sense voltage input for the third most positive cell, balance current input for that cell, and return balance current for the second most positive cell."
},
{
"number": "6",
"name": "VC4",
"type": "input",
"description": "Sense voltage input for the least positive cell, balance current input for that cell, and return balance current for the third most positive cell."
},
{
"number": "7",
"name": "VC5",
"type": "input",
"description": "Sense voltage input for the most negative cell and return balance current for the least positive cell."
},
{
"number": "8",
"name": "SR1",
"type": "input",
"description": "Current sense positive terminal when charging, relative to SR2."
},
{
"number": "9",
"name": "SR2",
"type": "input",
"description": "Current sense positive terminal when discharging, relative to SR1."
},
{
"number": "10",
"name": "CNTL",
"type": "input",
"description": "Active low input that enables CHG, DSG and PCHG, with an internal pullup."
},
{
"number": "11",
"name": "GND",
"type": "power_in",
"description": "Analog ground pin and negative pack terminal."
},
{
"number": "12",
"name": "VCELL",
"type": "output",
"description": "Output of the scaled value of the measured cell voltage, with absolute maximum of 7 V."
},
{
"number": "13",
"name": "GND",
"type": "power_in",
"description": "Analog ground pin and negative pack terminal."
},
{
"number": "14",
"name": "SCLK",
"type": "bidirectional",
"description": "Open-drain bidirectional serial interface clock with internal 10-kΩ pullup to VREG."
},
{
"number": "15",
"name": "SDATA",
"type": "bidirectional",
"description": "Open-drain bidirectional serial interface data with internal 10-kΩ pullup to VREG."
},
{
"number": "16",
"name": "CLKIN",
"type": "input",
"description": "Digital input that provides an alternate clock, with internal 100-kΩ pullup to VREG."
},
{
"number": "17",
"name": "XALERT",
"type": "output",
"description": "Open-drain output used to indicate status register changes, with internal 100-kΩ pullup to VREG."
},
{
"number": "18",
"name": "TOUT",
"type": "output",
"description": "Provides thermistor bias current."
},
{
"number": "19",
"name": "VREG",
"type": "power_out",
"description": "Integrated 3.3-V regulator output, requiring an external 1-µF VREG capacitor."
},
{
"number": "20",
"name": "LEDOUT",
"type": "output",
"description": "Provides current to drive the LED capacity display."
},
{
"number": "21",
"name": "CHG",
"type": "output",
"description": "Push-pull output charge FET gate voltage supply."
},
{
"number": "22",
"name": "PCHG",
"type": "output",
"description": "Push-pull output precharge FET gate voltage supply."
},
{
"number": "23",
"name": "DSG",
"type": "output",
"description": "Push-pull output discharge FET gate voltage supply."
},
{
"number": "24",
"name": "VPACK",
"type": "power_in",
"description": "Pack positive terminal and alternate power source."
}
],
"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 types are not stated in the datasheet; they were inferred from the Terminal Functions descriptio; GND appears on two pins (11 and 13) in the terminal table; both are listed as analog ground and nega; VC1 is shorted to VC2 in 3-cell configurations, per the datasheet. The pinout here is the 4-cell map"
],
"pages_sent": 8,
"cost_usd": 0.0573,
"at": "2026-10-31T00:22:37"
},
"datasheet": {
"url": "https://www.ti.com/lit/ds/symlink/bq29311.pdf",
"pages": 25,
"sha256": "e8f9fa6552bc3101",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 24,
"described": 24,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
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"models_3d": [
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"file": "bq29311pwr.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.4,
7.8,
0.97
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "706322f42d9793ebf28d5b80100a68bfa8769998a00b78acadf7af937fc1454f",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "bq29311pwr-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.4,
7.8,
0.97
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "7ab5db8a15afe29ad3ee5031f964e3b32e234590afbeea03dfa8da3171e2471e",
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}
],
"package_dims": {
"package_code": "PW0024A",
"source_page": 22,
"D": {
"nom_mm": 7.8,
"range_mm": [
7.7,
7.9
]
},
"E1": {
"nom_mm": 4.4,
"range_mm": [
4.3,
4.5
]
},
"E": {
"nom_mm": 6.4,
"range_mm": [
6.2,
6.6
]
},
"e": {
"nom_mm": 0.65,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 1.2,
"range_mm": [
null,
1.2
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "bq29311pwr.step",
"verdict": "PASS",
"reasons": [
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}
}
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "TSSOP-24",
"Category": "Power Supply Chip",
"Pins": "24"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "e8f9fa6552bc3101aef7b7d275fa4fb7026dd66ee013f9e7792ad64f400316de",
"rows": [
{
"name": "Supply voltage range",
"symbol": "VCC, VPACK",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 34,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Supply voltage range VC1-VC4, VBAT",
"symbol": "VC1, VC2, VC3, VC4, VBAT",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 34,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Voltage range VC5, SR1, SR2",
"symbol": "VC5, SR1, SR2",
"kind": "absolute_maximum",
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"min": -1,
"typ": null,
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{
"name": "Input voltage range VC1 to VC2 through VC4 to VC5",
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"min": -0.3,
"typ": null,
"max": 8.5,
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"source": "datasheet"
},
{
"name": "Input voltage range CLK-IN, SCLK, SDATA",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Input voltage range CNTL",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 34,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Output voltage range DSG, CHG, PCHG",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Output voltage range LEDOUT, TOUT, SCLK, SDATA, VCELL, XALERT",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Current for cell balancing",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 10,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "ESD rating HBM",
"symbol": "",
"kind": "absolute_maximum",
"unit": "kV",
"min": null,
"typ": null,
"max": 1.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "ESD rating CDM",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 250,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "ESD rating MM",
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"unit": "V",
"min": null,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Operating free-air temperature range",
"symbol": "TA",
"kind": "absolute_maximum",
"unit": "°C",
"min": -25,
"typ": null,
"max": 85,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Storage temperature range",
"symbol": "Tstg",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Lead temperature (soldering)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 260,
"conditions": "10 s soldering",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Package power rating PW, TA ≤ 25°C",
"symbol": "",
"kind": "thermal",
"unit": "mW",
"min": null,
"typ": null,
"max": 874,
"conditions": "TA ≤ 25°C",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Package power rating PW, TA = 70°C",
"symbol": "",
"kind": "thermal",
"unit": "mW",
"min": null,
"typ": null,
"max": 559,
"conditions": "TA = 70°C",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Package power rating PW, TA = 85°C",
"symbol": "",
"kind": "thermal",
"unit": "mW",
"min": null,
"typ": null,
"max": 454,
"conditions": "TA = 85°C",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Supply voltage (VCC or VPACK)",
"symbol": "VCC or VPACK",
"kind": "recommended_operating",
"unit": "V",
"min": null,
"typ": null,
"max": 25,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Battery input voltage VBAT",
"symbol": "VBAT",
"kind": "recommended_operating",
"unit": "V",
"min": 0,
"typ": null,
"max": null,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Cell input voltage VC1-VC4",
"symbol": "VC1, VC2, VC3, VC4",
"kind": "recommended_operating",
"unit": "V",
"min": 0,
"typ": null,
"max": null,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Input voltage range SR1, SR2, VC5",
"symbol": "VI",
"kind": "recommended_operating",
"unit": "V",
"min": -0.5,
"typ": null,
"max": 0.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Cell differential voltage VCn-VC(n+1)",
"symbol": "VCn−VC(n+1)",
"kind": "recommended_operating",
"unit": "V",
"min": 0,
"typ": null,
"max": 5,
"conditions": "n = 1, 2, 3, 4",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Output current XALERT",
"symbol": "IO",
"kind": "recommended_operating",
"unit": "µA",
"min": null,
"typ": null,
"max": 200,
"conditions": "XALERT",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Output current SDATA",
"symbol": "IO",
"kind": "recommended_operating",
"unit": "µA",
"min": null,
"typ": null,
"max": 50,
"conditions": "SDATA",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Output current VCELL",
"symbol": "IO",
"kind": "recommended_operating",
"unit": "µA",
"min": -10,
"typ": null,
"max": 10,
"conditions": "VCELL",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Input current CNTL",
"symbol": "II",
"kind": "recommended_operating",
"unit": "µA",
"min": -0.5,
"typ": null,
"max": 1,
"conditions": "CNTL",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Operating ambient temperature range",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -25,
"typ": null,
"max": 85,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Supply current 1 (TA = 25°C)",
"symbol": "I(CC1)",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 140,
"max": 190,
"conditions": "No load at VREG, TOUT, LEDOUT, XALERT, SCLK; TA = 25°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Supply current 1 (TA = -25°C to 85°C)",
"symbol": "I(CC1)",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 220,
"conditions": "CLKIN not used; TA = −25°C to 85°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Supply current 2",
"symbol": "I(CC2)",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": null,
"max": 1,
"conditions": "VBAT ≤ VSD, VPACK = 0; DSG, CHG and PCHG = off; TA = −25°C to 85°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Regulator output voltage",
"symbol": "V(REG)",
"kind": "electrical",
"unit": "V",
"min": 3.135,
"typ": 3.3,
"max": 3.465,
"conditions": "IO ≤ 25 mA, TA = −25°C to 85°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Regulator output change with temperature (TA = -25°C to 25°C)",
"symbol": "∆V(REGTEMP)",
"kind": "electrical",
"unit": "%",
"min": -1.74,
"typ": 0.2,
"max": 1.74,
"conditions": "V(SD) = 6.5 V ≤ VCC ≤ 25 V, TA = −25°C to 25°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Line regulation",
"symbol": "∆V(REGLINE)",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 6,
"max": 20,
"conditions": "V(SD) = 6.5 V ≤ VCC ≤ 25 V, IO = 25 mA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Load regulation",
"symbol": "∆V(REGLOAD)",
"kind": "electrical",
"unit": "mV",
"min": null,
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