component
BQ7721602PWR
Public Made by Adomby adom
Texas Instruments Battery Management, TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBQ7721602PWR
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bq7721602pwr.step/bq7721602pwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (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, primaryclaude-haiku-5-5(text), consensusclaude-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).