component
BQ25302RTER
Public Made by Adomby adom
Texas Instruments Battery Management ICs, WQFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"slug": "bq25302rter",
"title": "BQ25302RTER",
"brief": "Texas Instruments Battery Management ICs, WQFN-16-EP(3x3). 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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"component": {
"mpn": "BQ25302RTER",
"manufacturer": "Texas Instruments",
"package": "WQFN-16-EP(3x3)",
"pin_count": 17,
"category": "Power Supply Chip",
"subcategory": "Battery Management ICs",
"datasheet": "https://www.ti.com/cn/lit/gpn/bq25302",
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"distributor_check": {
"checked_at": "2026-10-22T21:46:28Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "VBUS",
"type": "power_in",
"description": "Charger input voltage (4.1 V to 6.2 V operating, 28 V abs max) with the reverse-blocking MOSFET between VBUS and PMID; place a 2.2 µF ceramic capacitor from VBUS to GND as close to the IC as possible."
},
{
"number": "2",
"name": "REGN",
"type": "power_out",
"description": "Low-side FET driver positive supply output; connect a 2.2 µF ceramic capacitor from REGN to GND close to the IC."
},
{
"number": "3",
"name": "STAT",
"type": "output",
"description": "Open-drain charge status output, connected to REGN via a current-limiting resistor and LED: LOW while charging, open when charge complete or disabled, blinks on fault."
},
{
"number": "4",
"name": "ICHG",
"type": "input",
"description": "Charge current program input; connect a 1% resistor to ground to set ICHG = 40,000 / RICHG, no capacitor allowed, and charging stops if the pin is open or shorted to ground."
},
{
"number": "5",
"name": "POL",
"type": "input",
"description": "This pin must be left floating."
},
{
"number": "6",
"name": "EN",
"type": "input",
"description": "Device disable input; the device is enabled with EN floating or pulled low and disabled when EN is pulled high."
},
{
"number": "7",
"name": "TS",
"type": "input",
"description": "Battery temperature protection voltage input for an NTC thermistor (103AT-2 recommended) with a resistor divider from REGN to TS to GND; charge suspends when out of range, and if unused use 10 kΩ from REGN to TS and 10 kΩ from TS to GND."
},
{
"number": "8",
"name": "NC",
"type": "unconnected",
"description": "No connection; keep this pin floating or grounded."
},
{
"number": "9",
"name": "VSET",
"type": "input",
"description": "Charge voltage setting input programmed by a pull-down resistor to GND: floating 4.1 V, short to GND 4.2 V, 51 kΩ 4.35 V, 10 kΩ 4.4 V, with maximum 50 pF capacitance allowed."
},
{
"number": "10",
"name": "BAT",
"type": "input",
"description": "Battery voltage sensing input connected to the positive battery terminal and inductor output node, with a 10 µF capacitor recommended."
},
{
"number": "11",
"name": "GND",
"type": "power_in",
"description": "Ground, connected directly to the thermal pad on the top layer, with a single-point connection between power and analog ground near the IC GND pins."
},
{
"number": "12",
"name": "GND",
"type": "power_in",
"description": "Ground, connected directly to the thermal pad on the top layer, with a single-point connection between power and analog ground near the IC GND pins."
},
{
"number": "13",
"name": "SW",
"type": "power_out",
"description": "Switching node connected to the output inductor, internally the HSFET source and LSFET drain, with a 0.047 µF bootstrap capacitor from SW to BTST."
},
{
"number": "14",
"name": "SW",
"type": "power_out",
"description": "Switching node connected to the output inductor, internally the HSFET source and LSFET drain, with a 0.047 µF bootstrap capacitor from SW to BTST."
},
{
"number": "15",
"name": "BTST",
"type": "passive",
"description": "High-side FET driver supply connected internally to the bootstrap diode cathode; connect a 0.047 µF bootstrap capacitor from SW to BTST."
},
{
"number": "16",
"name": "PMID",
"type": "passive",
"description": "Connection to the drain of the reverse-blocking MOSFET and the high-side MOSFET; place a 10 µF ceramic capacitor from PMID to GND as close to the IC as possible."
},
{
"number": "17",
"name": "Thermal Pad",
"type": "power_in",
"description": "Ground reference and thermal pad that conducts heat from the device, to be tied externally to a ground plane through vias under the pad."
}
],
"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 only I/O class P (power) for these pins; the KiCad ERC types chosen (power_out/passi; Datasheet classes are AI and AO; mapped to input and output (STAT is open drain)."
],
"pages_sent": 18,
"cost_usd": 0.1622,
"at": "2026-10-22T21:46:16"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/bq25302",
"pages": 38,
"sha256": "b57f7cefbc2b08bd",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 17,
"described": 17,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
},
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{
"file": "bq25302rter.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "3eb81ffac423a66cdcfead8efe56401da171edaf1f2257049aad7b2d3900f6c8",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "bq25302rter-etched.step",
"role": "eda",
"up": "Z",
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"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
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"sha256": "dad65a88ec39854b449f3e3ac9e461e1d13a005549651e987c4531ad99e7d0ac",
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]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "WQFN-16-EP(3x3)",
"Category": "Power Supply Chip",
"Pins": "17"
},
"appearance": {
"contacts": {
"quote": "• Place input capacitor as close as possible to PMID pin and GND pin and use shortest copper trace",
"page": 27,
"doc": "ds.pdf",
"material": "copper"
},
"version": 1,
"datasheet_sha256": "b57f7cefbc2b08bd7e08b0999e519ddd83ee5e8f88ae3490253e93bdd4feb53a"
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"characteristics": {
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"rows": [
{
"name": "VBUS voltage (converter not switching)",
"symbol": "VBUS",
"kind": "absolute_maximum",
"unit": "V",
"min": -2,
"typ": null,
"max": 28,
"conditions": "converter not switching",
"source_page": 6,
"source": "datasheet"
},
{
"name": "PMID voltage",
"symbol": "PMID",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 28,
"conditions": "converter not switching",
"source_page": 6,
"source": "datasheet"
},
{
"name": "SW voltage",
"symbol": "SW",
"kind": "absolute_maximum",
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"max": 20,
"conditions": "-3V for 10ns transient",
"source_page": 6,
"source": "datasheet"
},
{
"name": "BTST voltage",
"symbol": "BTST",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 25.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "STAT voltage",
"symbol": "STAT",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
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{
"name": "BAT voltage",
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"typ": null,
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{
"name": "BTST to SW voltage",
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{
"name": "ICHG pin voltage",
"symbol": "ICHG",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "REGN voltage",
"symbol": "REGN",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
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{
"name": "POL voltage",
"symbol": "POL",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "EN voltage",
"symbol": "/EN",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5.5,
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"source": "datasheet"
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{
"name": "TS voltage",
"symbol": "TS",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VSET voltage",
"symbol": "VSET",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 11,
"conditions": "11V DC, up to 13V for max 100us",
"source_page": 6,
"source": "datasheet"
},
{
"name": "STAT output sink current",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 6,
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{
"name": "REGN output sink current",
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"kind": "absolute_maximum",
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"min": null,
"typ": null,
"max": 20,
"conditions": "",
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"source": "datasheet"
},
{
"name": "Junction temperature",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Storage temperature",
"symbol": "Tstg",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "ESD HBM",
"symbol": "V(ESD)",
"kind": "absolute_maximum",
"unit": "V",
"min": -2000,
"typ": null,
"max": 2000,
"conditions": "HBM, all pins",
"source_page": 6,
"source": "datasheet"
},
{
"name": "ESD CDM",
"symbol": "V(ESD)",
"kind": "absolute_maximum",
"unit": "V",
"min": -250,
"typ": null,
"max": 250,
"conditions": "CDM, all pins",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input voltage",
"symbol": "VVBUS",
"kind": "recommended_operating",
"unit": "V",
"min": 4.1,
"typ": null,
"max": 6.2,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Battery voltage",
"symbol": "VBAT",
"kind": "recommended_operating",
"unit": "V",
"min": null,
"typ": null,
"max": 4.4,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input current",
"symbol": "IVBUS",
"kind": "recommended_operating",
"unit": "A",
"min": null,
"typ": null,
"max": 2,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Output current (SW)",
"symbol": "ISW",
"kind": "recommended_operating",
"unit": "A",
"min": null,
"typ": null,
"max": 2,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Ambient temperature",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 85,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Effective inductance",
"symbol": "L",
"kind": "recommended_operating",
"unit": "µH",
"min": 0.7,
"typ": 1,
"max": null,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Effective VBUS capacitance",
"symbol": "CVBUS",
"kind": "recommended_operating",
"unit": "µF",
"min": 1.1,
"typ": 2.2,
"max": null,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Effective PMID capacitance",
"symbol": "CPMID",
"kind": "recommended_operating",
"unit": "µF",
"min": 5,
"typ": 10,
"max": null,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Effective BAT capacitance",
"symbol": "CBAT",
"kind": "recommended_operating",
"unit": "µF",
"min": 5,
"typ": 10,
"max": null,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Junction-to-ambient thermal resistance",
"symbol": "RθJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 45.8,
"max": null,
"conditions": "JEDEC",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Junction-to-case (top) thermal resistance",
"symbol": "RθJC(top)",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 48.5,
"max": null,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Junction-to-board thermal resistance",
"symbol": "RθJB",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 19,
"max": null,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Junction-to-top characterization parameter",
"symbol": "ΨJT",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 1.3,
"max": null,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Junction-to-board characterization parameter",
"symbol": "ΨJB",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 19,
"max": null,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Junction-to-case (bottom) thermal resistance",
"symbol": "RθJC(bot)",
"kind": "thermal",
"unit": "°C/W",
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