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BQ7721602PWR
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Texas Instruments Battery Management, TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+61@@ -0,0 +1,61 @@+# BQ7721602PWR++**Texas Instruments** · Battery Management · TSSOP-24++BQ7721602PWR from Texas Instruments, in a TSSOP-24. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | NC | unconnected | Not electrically connected internally; may be left floating. |+| 2 | VDD | power_in | Non-regulated IC supply input, recommended 5 V to 75 V with an 85 V absolute maximum (VDD to VSS); a series resistor limits current and a capacitor to ground filters noise. |+| 3 | V16 | input | Voltage sense input for the positive terminal of the 16th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 4 | V15 | input | Voltage sense input for the positive terminal of the 15th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 5 | V14 | input | Voltage sense input for the positive terminal of the 14th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 6 | V13 | input | Voltage sense input for the positive terminal of the 13th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 7 | V12 | input | Voltage sense input for the positive terminal of the 12th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 8 | V11 | input | Voltage sense input for the positive terminal of the 11th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 9 | V10 | input | Voltage sense input for the positive terminal of the 10th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 10 | V9 | input | Voltage sense input for the positive terminal of the 9th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 11 | V8 | input | Voltage sense input for the positive terminal of the 8th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 12 | V7 | input | Voltage sense input for the positive terminal of the 7th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 13 | V6 | input | Voltage sense input for the positive terminal of the 6th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 14 | V5 | input | Voltage sense input for the positive terminal of the 5th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 15 | NC | unconnected | Not electrically connected internally; may be left floating. |+| 16 | NC | unconnected | Not electrically connected internally; may be left floating. |+| 17 | V4 | input | Voltage sense input for the positive terminal of the 4th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 18 | V3 | input | Voltage sense input for the positive terminal of the 3rd cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 19 | V2 | input | Voltage sense input for the positive terminal of the 2nd cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter. |+| 20 | V1 | input | Voltage sense input for the positive terminal of the lowest cell in the pack; V1 to VSS recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V, and requires a series RC filter. |+| 21 | VSS | power_in | Electrically connected to the IC ground and the negative terminal of the lowest cell in the pack; should connect to the CELL- terminal per the layout guidelines. |+| 22 | COUT | output | Fault output for overvoltage, open-wire, undertemperature and overtemperature; for this variant it is configured active-high driving to 6 V, absolute maximum COUT to VSS -0.3 V to 85 V, and may be left floating when unused. |+| 23 | DOUT | output | Fault output for undervoltage, open-wire, undertemperature and overtemperature; for this variant it is configured active-high driving to 6 V, absolute maximum DOUT to VSS -0.3 V to 85 V, and may be left floating when unused. |+| 24 | TS | input | Temperature sensor input with a recommended range of 0 V to 1.5 V (absolute maximum -0.3 V to 1.5 V); if unused, connect to VSS through a 10 kΩ resistor. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-24 |+| Category | Power Management (PMIC) |+| Pins | 24 |++## CAD (KiCad official)++- Symbol: `BQ7721602PWR`+- Footprint: `Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm`+- 3D model: TSSOP-24 (KiCad packages3D, STEP)+- 3D model files: `bq7721602pwr-etched.step` / `bq7721602pwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq7721602pwr.step` / `bq7721602pwr.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/bq77216) (29 pp, sha256 `090af0809348e250`, retrieved 2026-10-08, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/bq7721602pwr-datasheet.pdf)
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Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "bq7721602pwr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "bq7721602pwr.kicad_sym",+ "bq7721602pwr.kicad_mod",+ "bq7721602pwr.glb",+ "bq7721602pwr.step",+ "bq7721602pwr.lbr",+ "docs/hero.png",+ "docs/bq7721602pwr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "bq7721602pwr-hero.glb",+ "bq7721602pwr-hero.overlay.json"+ ],+ "component": {+ "mpn": "BQ7721602PWR",+ "manufacturer": "Texas Instruments",+ "package": "TSSOP-24",+ "pin_count": 24,+ "category": "Power Management (PMIC)",+ "subcategory": "Battery Management",+ "datasheet": "https://www.ti.com/cn/lit/gpn/bq77216",+ "parts": {+ "symbol": "bq7721602pwr.kicad_sym",+ "footprint": "bq7721602pwr.kicad_mod",+ "model_3d": "bq7721602pwr-hero.glb",+ "model_3d_plain": "bq7721602pwr.glb",+ "model_3d_step": "bq7721602pwr-etched.step",+ "model_3d_step_plain": "bq7721602pwr.step",+ "lbr": "bq7721602pwr.lbr"+ },+ "distributor_links": {+ "lcsc": "C3682308",+ "digikey": "296-BQ7721602PWRTR-ND",+ "mouser": "595-BQ7721602PWR"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T18:53:14Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-BQ7721602PWRTR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-BQ7721602PWR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "NC",+ "type": "unconnected",+ "description": "Not electrically connected internally; may be left floating."+ },+ {+ "number": "2",+ "name": "VDD",+ "type": "power_in",+ "description": "Non-regulated IC supply input, recommended 5 V to 75 V with an 85 V absolute maximum (VDD to VSS); a series resistor limits current and a capacitor to ground filters noise."+ },+ {+ "number": "3",+ "name": "V16",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 16th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "4",+ "name": "V15",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 15th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "5",+ "name": "V14",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 14th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "6",+ "name": "V13",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 13th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "7",+ "name": "V12",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 12th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "8",+ "name": "V11",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 11th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "9",+ "name": "V10",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 10th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "10",+ "name": "V9",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 9th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "11",+ "name": "V8",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 8th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "12",+ "name": "V7",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 7th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "13",+ "name": "V6",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 6th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "14",+ "name": "V5",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 5th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "15",+ "name": "NC",+ "type": "unconnected",+ "description": "Not electrically connected internally; may be left floating."+ },+ {+ "number": "16",+ "name": "NC",+ "type": "unconnected",+ "description": "Not electrically connected internally; may be left floating."+ },+ {+ "number": "17",+ "name": "V4",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 4th cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "18",+ "name": "V3",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 3rd cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "19",+ "name": "V2",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the 2nd cell from the bottom of the pack; Vn to Vn-1 recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V to VSS, and requires a series RC filter."+ },+ {+ "number": "20",+ "name": "V1",+ "type": "input",+ "description": "Voltage sense input for the positive terminal of the lowest cell in the pack; V1 to VSS recommended 0 V to 5 V, absolute maximum -0.3 V to 85 V, and requires a series RC filter."+ },+ {+ "number": "21",+ "name": "VSS",+ "type": "power_in",+ "description": "Electrically connected to the IC ground and the negative terminal of the lowest cell in the pack; should connect to the CELL- terminal per the layout guidelines."+ },+ {+ "number": "22",+ "name": "COUT",+ "type": "output",+ "description": "Fault output for overvoltage, open-wire, undertemperature and overtemperature; for this variant it is configured active-high driving to 6 V, absolute maximum COUT to VSS -0.3 V to 85 V, and may be left floating when unused."+ },+ {+ "number": "23",+ "name": "DOUT",+ "type": "output",+ "description": "Fault output for undervoltage, open-wire, undertemperature and overtemperature; for this variant it is configured active-high driving to 6 V, absolute maximum DOUT to VSS -0.3 V to 85 V, and may be left floating when unused."+ },+ {+ "number": "24",+ "name": "TS",+ "type": "input",+ "description": "Temperature sensor input with a recommended range of 0 V to 1.5 V (absolute maximum -0.3 V to 1.5 V); if unused, connect to VSS through a 10 kΩ resistor."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-5-5",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Package confirmed: BQ7721602 is listed as 24-pin TSSOP (PW) with 2000-piece tape and reel for BQ7721; The datasheet supplied is the Chinese translation (TI notes the translation is not guaranteed accura; Output type for COUT and DOUT is taken from the BQ7721602 row of the comparison table (page 4): acti"+ ],+ "pages_sent": 29,+ "cost_usd": 0.1368,+ "at": "2026-10-08T18:52:35"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/bq77216",+ "pages": 29,+ "sha256": "090af0809348e250",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 24,+ "described": 24,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "bq7721602pwr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.4,+ 7.8,+ 0.97+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "706322f42d9793ebf28d5b80100a68bfa8769998a00b78acadf7af937fc1454f",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "bq7721602pwr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.4,+ 7.8,+ 0.97+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "674d1f50e13c8fc6d8b340257b55a20daa658d3e0bf9b2d5810bde6a0d1c61db",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}