component
BQ40Z50RSMT-R1
Public Made by Adomby adom
Texas Instruments Battery Management ICs, VQFN-32-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "BQ40Z50RSMT-R1",
"brief": "Texas Instruments Battery Management ICs, VQFN-32-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"mpn": "BQ40Z50RSMT-R1",
"manufacturer": "Texas Instruments",
"package": "VQFN-32-EP(4x4)",
"pin_count": 33,
"category": "Power Supply Chip",
"subcategory": "Battery Management ICs",
"datasheet": "https://www.ti.com/cn/lit/gpn/bq40z50-r1",
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{
"number": "1",
"name": "PBI",
"type": "power_in",
"description": "Power supply backup input pin."
},
{
"number": "2",
"name": "VC4",
"type": "input",
"description": "Sense voltage input pin for most positive cell, and balance current input for most positive cell."
},
{
"number": "3",
"name": "VC3",
"type": "input",
"description": "Sense voltage input pin for second most positive cell, balance current input for second most positive cell, and return balance current for most positive cell."
},
{
"number": "4",
"name": "VC2",
"type": "input",
"description": "Sense voltage input pin for third most positive cell, balance current input for third most positive cell, and return balance current for second most positive cell."
},
{
"number": "5",
"name": "VC1",
"type": "input",
"description": "Sense voltage input pin for least positive cell, balance current input for least positive cell, and return balance current for third most positive cell."
},
{
"number": "6",
"name": "SRN",
"type": "input",
"description": "Analog input pin connected to the internal coulomb counter peripheral for integrating a small voltage between SRP and SRN where SRP is the top of the sense resistor."
},
{
"number": "7",
"name": "NC",
"type": "unconnected",
"description": "Not internally connected. Connect to VSS."
},
{
"number": "8",
"name": "SRP",
"type": "input",
"description": "Analog input pin connected to the internal coulomb counter peripheral for integrating a small voltage between SRP and SRN where SRP is the top of the sense resistor."
},
{
"number": "9",
"name": "VSS",
"type": "power_in",
"description": "Device ground."
},
{
"number": "10",
"name": "TS1",
"type": "input",
"description": "Temperature sensor 1 thermistor input pin."
},
{
"number": "11",
"name": "TS2",
"type": "input",
"description": "Temperature sensor 2 thermistor input pin."
},
{
"number": "12",
"name": "TS3",
"type": "input",
"description": "Temperature sensor 3 thermistor input pin."
},
{
"number": "13",
"name": "TS4",
"type": "input",
"description": "Temperature sensor 4 thermistor input pin."
},
{
"number": "14",
"name": "NC",
"type": "unconnected",
"description": "Not internally connected."
},
{
"number": "15",
"name": "BTP_INT",
"type": "output",
"description": "Battery Trip Point (BTP) interrupt output."
},
{
"number": "16",
"name": "PRES or SHUTDN",
"type": "input",
"description": "Host system present input for removable battery pack or emergency system shutdown input for embedded pack."
},
{
"number": "17",
"name": "DISP",
"type": "output",
"description": "Display control for LEDs."
},
{
"number": "18",
"name": "SMBD",
"type": "bidirectional",
"description": "SMBus data pin."
},
{
"number": "19",
"name": "SMBC",
"type": "bidirectional",
"description": "SMBus clock pin."
},
{
"number": "20",
"name": "LEDCNTLA",
"type": "output",
"description": "LED display segment that drives the external LEDs depending on the firmware configuration."
},
{
"number": "21",
"name": "LEDCNTLB",
"type": "output",
"description": "LED display segment that drives the external LEDs depending on the firmware configuration."
},
{
"number": "22",
"name": "LEDCNTLC",
"type": "output",
"description": "LED display segment that drives the external LEDs depending on the firmware configuration."
},
{
"number": "23",
"name": "PTC",
"type": "input",
"description": "Safety PTC thermistor input pin. To disable, connect both PTC and PTCEN to VSS."
},
{
"number": "24",
"name": "PTCEN",
"type": "input",
"description": "Safety PTC thermistor enable input pin. Connect to BAT. To disable, connect both PTC and PTCEN to VSS."
},
{
"number": "25",
"name": "FUSE",
"type": "output",
"description": "Fuse drive output pin."
},
{
"number": "26",
"name": "VCC",
"type": "power_in",
"description": "Secondary power supply input."
},
{
"number": "27",
"name": "PACK",
"type": "input",
"description": "Pack sense input pin."
},
{
"number": "28",
"name": "DSG",
"type": "output",
"description": "NMOS Discharge FET drive output pin."
},
{
"number": "29",
"name": "NC",
"type": "unconnected",
"description": "Not internally connected."
},
{
"number": "30",
"name": "PCHG",
"type": "output",
"description": "PMOS Precharge FET drive output pin."
},
{
"number": "31",
"name": "CHG",
"type": "output",
"description": "NMOS Charge FET drive output pin."
},
{
"number": "32",
"name": "BAT",
"type": "power_in",
"description": "Primary power supply input pin."
},
{
"number": "33",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
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"guards": "pin_guards 0.1: passed",
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],
"pages_sent": 11,
"cost_usd": 0.0263,
"at": "2026-10-28T16:43:11"
},
"datasheet": {
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"pages": 54,
"sha256": "0eb62413e2d29ec2",
"source_tier": "mfr"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 33,
"cites_pages": true,
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"metadata": {
"specs": {
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"Package": "VQFN-32-EP(4x4)",
"Category": "Power Supply Chip",
"Pins": "33"
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"appearance": {
"contacts": {
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"material": "copper"
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"version": 1,
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