component
TPS53681RSBR
Public Made by Adomby adom
Texas Instruments DC-DC Controllers, QFN-40-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": "tps53681rsbr",
"title": "TPS53681RSBR",
"brief": "Texas Instruments DC-DC Controllers, QFN-40-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": [
"component",
"power management ics",
"tps53681rsbr",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "TPS53681RSBR",
"manufacturer": "Texas Instruments",
"package": "QFN-40-EP(5x5)",
"pin_count": 41,
"category": "Power Management ICs",
"subcategory": "DC-DC Controllers",
"datasheet": "https://www.ti.com/cn/lit/gpn/tps53681",
"parts": {
"symbol": "tps53681rsbr.kicad_sym",
"footprint": "tps53681rsbr.kicad_mod",
"model_3d": "tps53681rsbr-hero.glb",
"model_3d_plain": "tps53681rsbr-etched.glb",
"model_3d_step": "tps53681rsbr-etched.step",
"model_3d_step_plain": "tps53681rsbr.step",
"lbr": "tps53681rsbr.lbr"
},
"distributor_links": {
"lcsc": "C702271",
"digikey": "TPS53681RSBR-ND",
"mouser": "595-TPS53681RSBR"
},
"distributor_check": {
"checked_at": "2026-10-31T12:40:26Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "TPS53681RSBR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "595-TPS53681RSBR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "BPWM1",
"type": "output",
"description": "PWM signal for phase 1 of channel B."
},
{
"number": "2",
"name": "BPWM2",
"type": "output",
"description": "PWM signal for phase 2 of channel B."
},
{
"number": "3",
"name": "APWM6/BPWM3",
"type": "output",
"description": "PWM signal for phase 6 of channel A, or phase 3 of channel B, based on the NVM option."
},
{
"number": "4",
"name": "APWM5",
"type": "output",
"description": "PWM signal for phase 5 of channel A."
},
{
"number": "5",
"name": "APWM4",
"type": "output",
"description": "PWM signal for phase 4 of channel A."
},
{
"number": "6",
"name": "APWM3",
"type": "output",
"description": "PWM signal for phase 3 of channel A."
},
{
"number": "7",
"name": "APWM2",
"type": "output",
"description": "PWM signal for phase 2 of channel A."
},
{
"number": "8",
"name": "APWM1",
"type": "output",
"description": "PWM signal for phase 1 of channel A."
},
{
"number": "9",
"name": "SMB_DIO",
"type": "bidirectional",
"description": "SMBus or I2C bi-directional serial data interface (open drain)."
},
{
"number": "10",
"name": "SMB_CLK",
"type": "input",
"description": "SMBus or I2C serial clock interface (open drain)."
},
{
"number": "11",
"name": "SMB_ALERT",
"type": "bidirectional",
"description": "SMBus or I2C bi-directional ALERT pin interface (open drain)."
},
{
"number": "12",
"name": "AVR_RDY",
"type": "output",
"description": "Channel A power-good open-drain output requiring an external pull-up resistor; pulled low when a shutdown fault occurs."
},
{
"number": "13",
"name": "AVR_EN",
"type": "input",
"description": "Active-high enable input for channel A; re-cycling BVR_EN pin clears the faults of channel A per the datasheet."
},
{
"number": "14",
"name": "VR_HOT",
"type": "output",
"description": "Active-low external temperature indicator."
},
{
"number": "15",
"name": "RESET",
"type": "bidirectional",
"description": "Resets the output voltage to the BOOT voltage."
},
{
"number": "16",
"name": "BVR_RDY",
"type": "output",
"description": "Channel B power-good open-drain output requiring an external pull-up resistor; pulled low when a shutdown fault occurs."
},
{
"number": "17",
"name": "GND",
"type": "power_in",
"description": "Connect to GND."
},
{
"number": "18",
"name": "GND",
"type": "power_in",
"description": "Connect to GND."
},
{
"number": "19",
"name": "NC",
"type": "unconnected",
"description": "No connection."
},
{
"number": "20",
"name": "BVR_EN",
"type": "input",
"description": "Active-high enable input for channel B; re-cycling the pin clears the faults of channel B."
},
{
"number": "21",
"name": "AVSP",
"type": "input",
"description": "Positive input of the remote voltage sense of channel A."
},
{
"number": "22",
"name": "AVSN",
"type": "input",
"description": "Negative input of the remote voltage sense of channel A."
},
{
"number": "23",
"name": "ACSP1",
"type": "input",
"description": "Current sense input for channel A; connect to the IOUT pin of TI smart power stages."
},
{
"number": "24",
"name": "ACSP2",
"type": "input",
"description": "Current sense input for channel A; tie to V3P3 according to Table 1 to disable the phase."
},
{
"number": "25",
"name": "ACSP3",
"type": "input",
"description": "Current sense input for channel A; tie to V3P3 according to Table 1 to disable the phase."
},
{
"number": "26",
"name": "ACSP4",
"type": "input",
"description": "Current sense input for channel A; tie to V3P3 according to Table 1 to disable the phase."
},
{
"number": "27",
"name": "ACSP5",
"type": "input",
"description": "Current sense input for channel A; tie to V3P3 according to Table 1 to disable the phase."
},
{
"number": "28",
"name": "ACSP6/BCSP3",
"type": "input",
"description": "Current sense input for channel A or channel B based on NVM option; connect to IOUT of smart power stages, tie to the 3.3-V supply to disable the phase."
},
{
"number": "29",
"name": "BCSP2",
"type": "input",
"description": "Current sense input for channel B; connect to IOUT of smart power stages, tie to V3P3 according to Table 1 to disable the phase."
},
{
"number": "30",
"name": "BVSP",
"type": "input",
"description": "Positive input of the remote voltage sense of channel B; connect to GND if channel B is not used."
},
{
"number": "31",
"name": "BVSN",
"type": "input",
"description": "Negative input of the remote voltage sense of channel B; connect to GND if channel B is not used."
},
{
"number": "32",
"name": "BCSP1",
"type": "input",
"description": "Current sense input for channel B; connect to IOUT pins of TI smart power stages, or to GND if channel B is not used."
},
{
"number": "33",
"name": "VR_FAULT",
"type": "output",
"description": "Open-drain VR fault indicator for high-side FET short, over-voltage, over-temperature and input over-current; low on failure and puts the controller into latch-off mode."
},
{
"number": "34",
"name": "ADDR",
"type": "input",
"description": "Voltage divider to VREF and GND whose level sets the 7-bit PMBus address with an ADC, latched at 3.3-V power up."
},
{
"number": "35",
"name": "BTSEN",
"type": "output",
"description": "Connect to TAO pin of TI smart power stages of channel B to sense the highest power-stage temperature and built-in fault signal."
},
{
"number": "36",
"name": "ATSEN",
"type": "output",
"description": "Connect to TAO pin of TI smart power stages of channel A to sense the highest power-stage temperature and built-in fault signal."
},
{
"number": "37",
"name": "CSPIN",
"type": "input",
"description": "Input voltage from the positive terminal of the input current sensing shunt; short to VIN_CSNIN and connect to converter input voltage (example: 12 V) when not used."
},
{
"number": "38",
"name": "VIN_CSNIN",
"type": "power_in",
"description": "Input voltage sensing for on-time control and telemetry and negative terminal of the input current sense shunt; short to CSPIN and connect to converter input (example: 12 V) when not used."
},
{
"number": "39",
"name": "V3P3",
"type": "power_in",
"description": "3.3-V power input for all digital logic circuits; bypass to GND with a ceramic capacitor of at least 1 µF."
},
{
"number": "40",
"name": "VREF",
"type": "power_out",
"description": "1.7-V LDO reference voltage; bypass to GND with 1-µF ceramic capacitor and connect to REFIN of TI smart power stages as current sense common-mode voltage."
},
{
"number": "41",
"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-sonnet-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Datasheet gives no pin number for the thermal pad; 'EP' is used as a placeholder.; ATSEN/BTSEN are listed as O in the datasheet pin table although they sense signals from the power st; AVR_EN description in the datasheet says re-cycling BVR_EN clears channel A faults (probable typo); "
],
"pages_sent": 11,
"cost_usd": 0.1624,
"at": "2026-10-31T12:40:09"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/tps53681",
"pages": 131,
"sha256": "1e01d86e076acf18",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 41,
"described": 41,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
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"file": "tps53681rsbr.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "8f37bc7a9aab4742c34f137d9822c0352acc227532830034555744338483cdfc",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "tps53681rsbr-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
5,
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],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "6d53de929a8fa0c640c6f6b94866bb0241d892b4eba95179321f13503cbc5d14",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "RSB0040E",
"source_page": 128,
"D": {
"nom_mm": 5,
"range_mm": [
4.9,
5.1
]
},
"E1": {
"nom_mm": 5,
"range_mm": [
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},
"e": {
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"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 0.8,
"range_mm": [
null,
0.8
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "tps53681rsbr.step",
"verdict": "PASS",
"reasons": [
"height within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "QFN-40-EP(5x5)",
"Category": "Power Management ICs",
"Pins": "41"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "1e01d86e076acf186195526e979d021650facb5b26eb1e98aedc827d408eb970",
"rows": [
{
"name": "Input voltage CSPIN, VIN_CSNIN",
"symbol": "",
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"unit": "V",
"min": -0.3,
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"max": 19,
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{
"name": "Input voltage ACSPx, ADDR, TSEN, EN, VSP, V3P3, RESET, SMB",
"symbol": "",
"kind": "absolute_maximum",
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"min": -0.3,
"typ": null,
"max": 3.6,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input voltage AGND, AVSN, BVSN",
"symbol": "",
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"unit": "V",
"min": -0.3,
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"source": "datasheet"
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{
"name": "Output voltage PWM, RDY, ALERT, VREF, FAULT, HOT",
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"source": "datasheet"
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{
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"unit": "°C",
"min": -55,
"typ": null,
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"conditions": "",
"source_page": 6,
"source": "datasheet"
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{
"name": "ESD HBM",
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"unit": "V",
"min": -3000,
"typ": null,
"max": 3000,
"conditions": "ANSI/ESDA/JEDEC JS-001",
"source_page": 6,
"source": "datasheet"
},
{
"name": "ESD CDM",
"symbol": "V(ESD)",
"kind": "absolute_maximum",
"unit": "V",
"min": -1500,
"typ": null,
"max": 1500,
"conditions": "JESD22-C101",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input voltage CSPIN, VIN_CSNIN",
"symbol": "",
"kind": "recommended_operating",
"unit": "V",
"min": 4.5,
"typ": 12,
"max": 17,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input voltage V3P3",
"symbol": "",
"kind": "recommended_operating",
"unit": "V",
"min": 2.97,
"typ": 3.3,
"max": 3.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input voltage ACSPx, ADDR, TSEN, EN, VSP, RESET, SMB",
"symbol": "",
"kind": "recommended_operating",
"unit": "V",
"min": -0.1,
"typ": null,
"max": 3.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input voltage AGND, AVSN, BVSN",
"symbol": "",
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"min": -0.1,
"typ": null,
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"source": "datasheet"
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{
"name": "Output voltage VREF",
"symbol": "",
"kind": "recommended_operating",
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"min": -0.1,
"typ": null,
"max": 1.72,
"conditions": "",
"source_page": 6,
"source": "datasheet"
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{
"name": "Output voltage PWM, RDY, ALERT, FAULT, HOT",
"symbol": "",
"kind": "recommended_operating",
"unit": "V",
"min": -0.1,
"typ": null,
"max": 3.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
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{
"name": "Ambient temperature",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Junction-to-ambient thermal resistance",
"symbol": "RθJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 34.1,
"max": null,
"conditions": "RSB (WQFN) 40 pins",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Junction-to-case (top) thermal resistance",
"symbol": "RθJC(top)",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 16.6,
"max": null,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Junction-to-board thermal resistance",
"symbol": "RθJB",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 5.8,
"max": null,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Junction-to-case (bottom) thermal resistance",
"symbol": "RθJC(bot)",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 0.9,
"max": null,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "V3P3 supply current",
"symbol": "IV3P3",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 13,
"max": 18,
"conditions": "VDAC < VSP < VDAC + 100m V, ENABLE = 'HI'",
"source_page": 7,
"source": "datasheet"
},
{
"name": "V3P3 standby current",
"symbol": "IV3P3SBY",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 9,
"max": 13.5,
"conditions": "ENABLE = 'LO'",
"source_page": 7,
"source": "datasheet"
},
{
"name": "V3P3 normal range",
"symbol": "V3NORMAL",
"kind": "electrical",
"unit": "V",
"min": 2.97,
"typ": null,
"max": 3.5,
"conditions": "Normal operation",
"source_page": 7,
"source": "datasheet"
},
{
"name": "V3P3 UVLO 'OK' threshold",
"symbol": "V3UVLOH",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 2.85,
"max": 2.95,
"conditions": "Ramp up",
"source_page": 7,
"source": "datasheet"
},
{
"name": "V3P3 UVLO fault threshold",
"symbol": "V3UVLOL",
"kind": "electrical",
"unit": "V",
"min": 2.65,
"typ": null,
"max": 2.75,
"conditions": "Ramp down",
"source_page": 7,
"source": "datasheet"
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{
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