component
BQ25730RSNR
Public Made by Adomby adom
Texas Instruments Battery Management ICs, QFN-32(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "bq25730rsnr",
"title": "BQ25730RSNR",
"brief": "Texas Instruments Battery Management ICs, QFN-32(4x4). 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 supply chip",
"bq25730rsnr",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "BQ25730RSNR",
"manufacturer": "Texas Instruments",
"package": "QFN-32(4x4)",
"pin_count": 33,
"category": "Power Supply Chip",
"subcategory": "Battery Management ICs",
"datasheet": "https://www.ti.com/cn/lit/gpn/bq25730",
"parts": {
"symbol": "bq25730rsnr.kicad_sym",
"footprint": "bq25730rsnr.kicad_mod",
"model_3d": "bq25730rsnr-hero.glb",
"model_3d_plain": "bq25730rsnr-etched.glb",
"model_3d_step": "bq25730rsnr-etched.step",
"model_3d_step_plain": "bq25730rsnr.step",
"lbr": "bq25730rsnr.lbr"
},
"distributor_links": {
"lcsc": "C5219071"
},
"distributor_check": {
"checked_at": "2026-10-22T21:12:40Z",
"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; an input low-pass filter of 1 Ω and 0.47 µF (minimum) is recommended."
},
{
"number": "2",
"name": "ACN",
"type": "input",
"description": "Input current sense amplifier negative input, leakage matched to ACP, requiring an RC low-pass filter between the sense resistor and the pin."
},
{
"number": "3",
"name": "ACP",
"type": "input",
"description": "Input current sense amplifier positive input, leakage matched to ACN, requiring an RC low-pass filter between the sense resistor and the pin."
},
{
"number": "4",
"name": "CHRG_OK",
"type": "output",
"description": "Open-drain active-high indicator of a good power source at the input, pulled up via 10 kΩ and high after 50 ms deglitch when VBUS is between 3.5 V and 25.8 V."
},
{
"number": "5",
"name": "OTG/VAP/FRS",
"type": "input",
"description": "Active-high input that enables OTG mode (OTG_VAP_MODE=1b and EN_OTG=1b) or FRS mode in forward operation (EN_FRS=1b)."
},
{
"number": "6",
"name": "ILIM_HIZ",
"type": "input",
"description": "Input current limit setting pin programmed by a resistor divider from VDDA with V(ILIM_HIZ) = 1 V + 40 × IDPM × Rac; below 0.4 V the device enters HIZ mode and above 0.8 V it exits."
},
{
"number": "7",
"name": "VDDA",
"type": "power_in",
"description": "Internal reference bias pin; connect a 10-Ω resistor from REGN to VDDA and a 1-µF ceramic capacitor from VDDA to power ground."
},
{
"number": "8",
"name": "IADPT",
"type": "output",
"description": "Adapter current monitor output, VIADPT = 20 or 40 × (VACP - VACN), also programs inductance via a resistor to ground (191 kΩ or 187 kΩ for 4.7 µH), clamped below 3.3 V with 100 pF or less decoupling."
},
{
"number": "9",
"name": "IBAT",
"type": "output",
"description": "Battery current monitor output, VIBAT = 8 or 16 × (VSRP - VSRN) for charge current, clamped below 3.3 V, with 100 pF or less decoupling and may float if unused."
},
{
"number": "10",
"name": "PSYS",
"type": "output",
"description": "Current-mode system power monitor proportional to total adapter and battery power, with a resistor to ground to set the voltage, clamped at 3.3 V and may float if unused."
},
{
"number": "11",
"name": "PROCHOT",
"type": "output",
"description": "Active-low open-drain output that pulses when an event in the PROCHOT profile (adapter input current, battery discharge current, system voltage) triggers, with pulse width set by PROCHOT_WIDTH bits."
},
{
"number": "12",
"name": "SDA",
"type": "bidirectional",
"description": "I2C open-drain data I/O, connected to the host data line with a 10-kΩ pullup resistor."
},
{
"number": "13",
"name": "SCL",
"type": "input",
"description": "I2C clock input from the host controller or smart battery, with a 10-kΩ pullup resistor."
},
{
"number": "14",
"name": "CMPIN",
"type": "input",
"description": "Independent comparator input compared with an internal reference, with a resistor to CMPOUT for hysteresis when CMP_POL=1b, and tied to ground if unused."
},
{
"number": "15",
"name": "CMPOUT",
"type": "output",
"description": "Open-drain independent comparator output requiring a pullup resistor to the supply rail, floated if the comparator is unused."
},
{
"number": "16",
"name": "COMP1",
"type": "passive",
"description": "Buck-boost converter compensation pin 1 connected to an RC network (see Section 8.3.12)."
},
{
"number": "17",
"name": "COMP2",
"type": "passive",
"description": "Buck-boost converter compensation pin 2 connected to an RC network (see Section 8.3.12)."
},
{
"number": "18",
"name": "CELL_BATPRESZ",
"type": "input",
"description": "Battery cell selection pin for 1- to 5-cell setting biased from VDDA through a resistor divider, which also sets SYSOVP thresholds, indicates battery removal when pulled low, and allows no external capacitor."
},
{
"number": "19",
"name": "SRN",
"type": "input",
"description": "Charge current sense amplifier negative input and battery voltage sensing, with a 0.1-µF filter capacitor across the sense resistor and 10-Ω resistor in series, leakage matched to SRP."
},
{
"number": "20",
"name": "SRP",
"type": "input",
"description": "Charge current sense amplifier positive input with a 0.1-µF filter capacitor across the sense resistor and 10-Ω resistor in series, leakage matched to SRN."
},
{
"number": "21",
"name": "BATDRV",
"type": "output",
"description": "P-channel BATFET gate driver output, shorted to VSYS to turn the BATFET off and driven 10 V below VSYS to turn it fully on."
},
{
"number": "22",
"name": "VSYS",
"type": "power_in",
"description": "Charger system voltage sensing, with maximum regulation limit set by ChargeVoltage register plus 150 mV and minimum limit set by the VSYS_MIN register."
},
{
"number": "23",
"name": "SW2",
"type": "passive",
"description": "Boost mode switching node, connected to the source of the boost half-bridge high-side n-channel MOSFET."
},
{
"number": "24",
"name": "HIDRV2",
"type": "output",
"description": "Boost mode high-side power MOSFET (Q4) driver, connected to the high-side n-channel MOSFET gate."
},
{
"number": "25",
"name": "BTST2",
"type": "passive",
"description": "Boost mode high-side MOSFET driver supply; connect a 0.047-µF capacitor between SW2 and BTST2."
},
{
"number": "26",
"name": "LODRV2",
"type": "output",
"description": "Boost mode low-side power MOSFET (Q3) driver, connected to the low-side n-channel MOSFET gate."
},
{
"number": "27",
"name": "PGND",
"type": "power_in",
"description": "Device power ground."
},
{
"number": "28",
"name": "REGN",
"type": "power_out",
"description": "6-V linear regulator output from VBUS or VSYS for power stage gate drive, active when VBUS is above VVBUS_CONVEN, with a 2.2- or 3.3-µF ceramic capacitor to power ground."
},
{
"number": "29",
"name": "LODRV1",
"type": "output",
"description": "Buck mode low-side power MOSFET (Q2) driver, connected to the low-side n-channel MOSFET gate."
},
{
"number": "30",
"name": "BTST1",
"type": "passive",
"description": "Buck mode high-side MOSFET driver supply; connect a 0.047-µF capacitor between SW1 and BTST1."
},
{
"number": "31",
"name": "HIDRV1",
"type": "output",
"description": "Buck mode high-side power MOSFET (Q1) driver, connected to the high-side n-channel MOSFET gate."
},
{
"number": "32",
"name": "SW1",
"type": "passive",
"description": "Buck mode switching node, connected to the source of the buck half-bridge high-side n-channel MOSFET."
},
{
"number": "33",
"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": {
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"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: The datasheet gives the exposed thermal pad no pin number, so 'PAD' is a placeholder. Its connection; The datasheet lists most pins only as PWR, I or O. I chose KiCad types from the descriptions. Check "
],
"pages_sent": 28,
"cost_usd": 0.3344,
"at": "2026-10-22T21:12:28"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/bq25730",
"pages": 111,
"sha256": "42ecebe67b94f6bf",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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"role": "plain",
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"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
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"checked": "2026-10-22",
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},
{
"file": "bq25730rsnr-etched.step",
"role": "eda",
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},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "QFN-32(4x4)",
"Category": "Power Supply Chip",
"Pins": "33"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "42ecebe67b94f6bfd06985a6af32cc9904046344beade09967e96563f41278d5",
"rows": [
{
"name": "Input voltage operating range",
"symbol": "VINPUT_OP",
"kind": "electrical",
"unit": "V",
"min": 3.5,
"typ": null,
"max": 26,
"conditions": "",
"source_page": 9,
"source": "datasheet"
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{
"name": "System voltage regulation range",
"symbol": "VSYSMAX_RNG",
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"unit": "V",
"min": 1.024,
"typ": null,
"max": 23.15,
"conditions": "measured on VSYS (charge disabled)",
"source_page": 9,
"source": "datasheet"
},
{
"name": "Minimum system voltage regulation range",
"symbol": "VSYS_MIN_RNG",
"kind": "electrical",
"unit": "V",
"min": 1,
"typ": null,
"max": 23,
"conditions": "measured on VSYS",
"source_page": 9,
"source": "datasheet"
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{
"name": "Battery voltage regulation range",
"symbol": "VBAT_RNG",
"kind": "electrical",
"unit": "V",
"min": 1.024,
"typ": null,
"max": 23,
"conditions": "",
"source_page": 10,
"source": "datasheet"
},
{
"name": "Battery voltage regulation accuracy 21 V",
"symbol": "VBAT_REG_ACC",
"kind": "tolerance",
"unit": "%",
"min": -0.5,
"typ": null,
"max": 0.5,
"conditions": "REG0x05/04() = 0x5208H, 0°C to 85°C",
"source_page": 10,
"source": "datasheet"
},
{
"name": "Battery voltage regulation accuracy 4.2 V",
"symbol": "VBAT_REG_ACC",
"kind": "tolerance",
"unit": "%",
"min": -1.1,
"typ": null,
"max": 1.45,
"conditions": "REG0x05/04() = 0x1068H, 0°C to 85°C",
"source_page": 10,
"source": "datasheet"
},
{
"name": "Charge current regulation accuracy 8192 mA",
"symbol": "ICHRG_REG_ACC",
"kind": "tolerance",
"unit": "%",
"min": -3,
"typ": null,
"max": 3,
"conditions": "REG0x03/02() = 0x1000H, 5-mΩ RSR, 0°C to 85°C",
"source_page": 10,
"source": "datasheet"
},
{
"name": "Charge current regulation differential voltage range",
"symbol": "VIREG_CHG_RNG",
"kind": "electrical",
"unit": "mV",
"min": 0,
"typ": null,
"max": 81.28,
"conditions": "VIREG_CHG = VSRP – VSRN",
"source_page": 10,
"source": "datasheet"
},
{
"name": "Input current regulation accuracy 7800 mA",
"symbol": "IIN_DPM_REG_ACC",
"kind": "electrical",
"unit": "mA",
"min": 7600,
"typ": 7800,
"max": 8000,
"conditions": "REG0x0F/0E() = 0x4E00H, 5-mΩ RAC, -40°C to 105°C",
"source_page": 11,
"source": "datasheet"
},
{
"name": "Input current regulation accuracy 800 mA",
"symbol": "IIN_DPM_REG_ACC",
"kind": "electrical",
"unit": "mA",
"min": 600,
"typ": 800,
"max": 1000,
"conditions": "REG0x0F/0E() = 0x0800H, 5-mΩ RAC, -40°C to 105°C",
"source_page": 11,
"source": "datasheet"
},
{
"name": "ACP, ACN leakage current mismatch",
"symbol": "ILEAK_ACP_ACN",
"kind": "electrical",
"unit": "µA",
"min": -16,
"typ": null,
"max": 10,
"conditions": "",
"source_page": 11,
"source": "datasheet"
},
{
"name": "ILIM_HIZ leakage current",
"symbol": "ILEAK_ILIM",
"kind": "electrical",
"unit": "µA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "",
"source_page": 11,
"source": "datasheet"
},
{
"name": "Input voltage regulation range",
"symbol": "VDPM_RNG",
"kind": "electrical",
"unit": "V",
"min": 3.2,
"typ": null,
"max": 19.52,
"conditions": "Voltage on VBUS",
"source_page": 11,
"source": "datasheet"
},
{
"name": "OTG voltage regulation range",
"symbol": "VOTG_REG_RNG",
"kind": "electrical",
"unit": "V",
"min": 3,
"typ": null,
"max": 24,
"conditions": "Voltage on VBUS, OOA disabled",
"source_page": 12,
"source": "datasheet"
},
{
"name": "REGN regulator voltage",
"symbol": "VREGN_REG",
"kind": "electrical",
"unit": "V",
"min": 5.7,
"typ": 6,
"max": 6.3,
"conditions": "VVBUS = 10 V, 0 mA – 60 mA",
"source_page": 12,
"source": "datasheet"
},
{
"name": "REGN voltage in dropout",
"symbol": "VDROPOUT",
"kind": "electrical",
"unit": "V",
"min": 3.8,
"typ": 4.3,
"max": 4.6,
"conditions": "VVBUS = 5 V, ILOAD = 20 mA",
"source_page": 12,
"source": "datasheet"
},
{
"name": "REGN current limit",
"symbol": "IREGN_LIM",
"kind": "electrical",
"unit": "mA",
"min": 50,
"typ": null,
"max": 65,
"conditions": "VVBUS = 10 V, force VREGN = 4 V",
"source_page": 12,
"source": "datasheet"
},
{
"name": "Battery quiescent current, low-power mode",
"symbol": "IBAT_BATFET_ON",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 22,
"max": 45,
"conditions": "VBAT = 18 V, REG0x01[7] = 1, REG0x31[6] = 0b, low-power mode, Disable PSYS",
"source_page": 12,
"source": "datasheet"
},
{
"name": "Battery quiescent current, performance mode",
"symbol": "IBAT_BATFET_ON",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 880,
"max": 1170,
"conditions": "VBAT = 18 V, REG0x01[7]= 0, REG0x31[5:4]= 11b, REGN on, Disable PSYS",
"source_page": 12,
"source": "datasheet"
},
{
"name": "ACP/ACN input common mode range",
"symbol": "VACP_ACN_OP",
"kind": "electrical",
"unit": "V",
"min": 3.8,
"typ": null,
"max": 26,
"conditions": "Voltage on ACP/ACN",
"source_page": 13,
"source": "datasheet"
},
{
"name": "IADPT output clamp voltage",
"symbol": "VIADPT_CLAMP",
"kind": "electrical",
"unit": "V",
"min": 3.1,
"typ": 3.2,
"max": 3.3,
"conditions": "",
"source_page": 13,
"source": "datasheet"
},
{
"name": "Input current monitor accuracy",
"symbol": "VIADPT_ACC",
"kind": "tolerance",
"unit": "%",
"min": -2,
"typ": null,
"max": 2,
"conditions": "V(ACP-ACN) = 40.96 mV",
"source_page": 13,
"source": "datasheet"
},
{
"name": "Battery common mode range",
"symbol": "VSRP_SRN_OP",
"kind": "electrical",
"unit": "V",
"min": 2.5,
"typ": null,
"max": 23.15,
"conditions": "Voltage on SRP/SRN",
"source_page": 13,
"source": "datasheet"
},
{
"name": "IBAT output clamp voltage",
"symbol": "VIBAT_CLAMP",
"kind": "electrical",
"unit": "V",
"min": 3.05,
"typ": 3.2,
"max": 3.3,
"conditions": "",
"source_page": 13,
"source": "datasheet"
},
{
"name": "Charge/discharge current monitor accuracy",
"symbol": "IIBAT_CHG_ACC",
"kind": "tolerance",
"unit": "%",
"min": -2,
"typ": null,
"max": 2,
"conditions": "V(SRN-SRP) = 40.96 mV",
"source_page": 13,
"source": "datasheet"
},
{
"name": "VSYS undervoltage rising threshold",
"symbol": "VSYS_UVLOZ",
"kind": "electrical",
"unit": "V",
"min": 2.3,
"typ": 2.5,
"max": 2.65,
"conditions": "VSYS rising",
"source_page": 14,
"source": "datasheet"
},
{
"name": "VSYS undervoltage falling threshold",
"symbol": "VSYS_UVLO",
"kind": "electrical",
"unit": "V",
"min": 2.2,
"typ": 2.4,
"max": 2.55,
"conditions": "VSYS falling REG3D[7:5]=000b",
"source_page": 14,
"source": "datasheet"
},
{
"name": "VBUS undervoltage rising threshold",
"symbol": "VVBUS_UVLOZ",
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