component
BQ27441
Public Made by Adomby adom
TI single-cell Li-ion battery fuel gauge, SON-12. Impedance Track, I2C state-of-charge, no sense resistor calibration. Datasheet-verified.
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bq27441: datasheet-first component page (KiCad sym+mod+step+lbr, hero, viewers)
1 file changed
+146−8
page.json+146−8@@ -1,8 +1,11 @@ {+ "schema_version": 1,+ "type": "component", "slug": "bq27441",+ "title": "BQ27441",+ "brief": "TI single-cell Li-ion battery fuel gauge, SON-12. Impedance Track, I2C state-of-charge, no sense resistor calibration. Datasheet-verified.", "version": "0.1.0",- "type": "component",- "description": "TI single-cell Li-ion battery fuel gauge, SON-12. Impedance Track, I2C state-of-charge, no sense resistor calibration. Datasheet-verified.",+ "license": "CC-BY-SA-4.0", "tags": [ "component", "power",@@ -12,6 +15,146 @@ "son-12", "texas-instruments" ],+ "component": {+ "mpn": "BQ27441",+ "manufacturer": "Texas Instruments",+ "package": "SON-12",+ "pin_count": 12,+ "category": "Power Management",+ "subcategory": "Battery fuel gauge",+ "datasheet": "https://www.ti.com/lit/ds/symlink/bq27441-g1.pdf",+ "parts": {+ "symbol": "bq27441.kicad_sym",+ "footprint": "bq27441.kicad_mod",+ "model_3d": "bq27441.glb",+ "model_3d_step": "bq27441.step",+ "lbr": "bq27441.lbr"+ },+ "distributor_links": {},+ "pins": [+ {+ "number": "1",+ "name": "SDA",+ "type": "bidirectional",+ "description": "Slave I2C serial data. Open-drain; requires an external ~10-k\u03a9 pull-up to VDD (typical). If external pull-ups can be disconnected during normal operation, add a 1-M\u03a9 pull-down to VSS to avoid floating inputs."+ },+ {+ "number": "2",+ "name": "SCL",+ "type": "bidirectional",+ "description": "Slave I2C serial clock from system master. Open-drain; requires an external ~10-k\u03a9 pull-up to VDD. Add a 1-M\u03a9 pull-down to VSS if external pull-ups can be disconnected."+ },+ {+ "number": "3",+ "name": "VSS",+ "type": "power_in",+ "description": "Device ground (0 V) reference pin."+ },+ {+ "number": "4",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection. May be left floating or tied to VSS."+ },+ {+ "number": "5",+ "name": "VDD",+ "type": "power_out",+ "description": "1.8-V internal LDO regulator output. Decouple with a 0.47-\u00b5F ceramic capacitor to VSS. Not intended to power other devices in the system."+ },+ {+ "number": "6",+ "name": "BAT",+ "type": "power_in",+ "description": "LDO regulator input and battery voltage measurement input (analog). Kelvin sense connect to the positive battery terminal (PACKP). Decouple with a 1-\u00b5F capacitor to VSS placed close to the gauge."+ },+ {+ "number": "7",+ "name": "SRN",+ "type": "input",+ "description": "Coulomb-counter differential input (negative). High-side connection expecting an external 10-m\u03a9, 1% sense resistor. Kelvin sense connect to the opposite side of the sense resistor from SRP (positive connection to system VSYS)."+ },+ {+ "number": "8",+ "name": "SRP",+ "type": "input",+ "description": "Coulomb-counter differential input (positive). Kelvin sense connect SRP to the positive battery-terminal (PACKP) side of the external 10-m\u03a9 sense resistor."+ },+ {+ "number": "9",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection. May be left floating or tied to VSS."+ },+ {+ "number": "10",+ "name": "BIN",+ "type": "input",+ "description": "Battery insertion detection digital input. With OpConfig [BI_PU_EN]=1 (default) a logic low indicates battery insertion. For removable packs, connect BIN to VSS through a pack thermistor (typ. 10-k\u03a9) with an internal-side 1.8-M\u03a9 pull-up to VDD; for embedded batteries use a 10-k\u03a9 pull-down to VSS. Must connect only to VDD and not an external rail; never short directly to VCC or VSS."+ },+ {+ "number": "11",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection. May be left floating or tied to VSS."+ },+ {+ "number": "12",+ "name": "GPOUT",+ "type": "output",+ "description": "Open-drain multipurpose output. Configurable via OpConfig [BATLOWEN]: when set, indicates BAT_LOW; when cleared (default), acts as SOC interrupt (SOC_INT) pulsed on events such as SOC changes. Requires an external 10-k\u03a9 pull-up; do not leave floating. Recommended to route to a host-MCU GPIO so the host can wake the gauge from shutdown."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/bq27441-g1.pdf",+ "pages": 28,+ "sha256": "8779b67adfe7683f",+ "source_tier": "mfr"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 12,+ "described": 12,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "metadata": {+ "specs": {+ "Type": "Single-cell Li-ion fuel gauge",+ "Algorithm": "Impedance Track",+ "Reports": "State of charge, remaining capacity, voltage, temperature",+ "Interface": "I2C",+ "Alert": "GPOUT (SOC / low-battery)",+ "Supply": "2.45-4.5 V (from battery)",+ "Package": "SON-12"+ }+ },+ "sections": [+ "hero",+ "viewers",+ "readme",+ "breadcrumbs",+ "info"+ ],+ "discovery_triggers": [+ "bq27441",+ "battery fuel gauge",+ "state of charge ic",+ "li-ion gas gauge"+ ],+ "discovery_pitch": "TI BQ27441 single-cell Li-ion fuel gauge (SON-12) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }, "dependencies": {}, "hero": { "type": "image",@@ -29,10 +172,5 @@ "docs/bq27441-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ],- "visibility": "public",- "author": {- "name": "Ray",- "email": "[email protected]"- }+ ] }