# BQ7721606PWR

**Texas Instruments** · Battery Management · TSSOP-24

BQ7721606PWR from Texas Instruments, in a TSSOP-24. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | No electrical connection; can be left floating. |
| 2 | VDD | power_in | Power supply input; operating range 5V to 75V. |
| 3 | V16 | input | Cell 16 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 4 | V15 | input | Cell 15 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 5 | V14 | input | Cell 14 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 6 | V13 | input | Cell 13 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 7 | V12 | input | Cell 12 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 8 | V11 | input | Cell 11 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 9 | V10 | input | Cell 10 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 10 | V9 | input | Cell 9 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 11 | V8 | input | Cell 8 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 12 | V7 | input | Cell 7 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 13 | V6 | input | Cell 6 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 14 | V5 | input | Cell 5 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 15 | NC | unconnected | No electrical connection; can be left floating. |
| 16 | NC | unconnected | No electrical connection; can be left floating. |
| 17 | V4 | input | Cell 4 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 18 | V3 | input | Cell 3 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 19 | V2 | input | Cell 2 positive voltage detection input from battery pack bottom (0V to 5V per cell). |
| 20 | V1 | input | Cell 1 positive voltage detection input from battery pack bottom (0V to 5V relative to VSS). |
| 21 | VSS | power_in | Ground connection to IC and battery pack lowest cell negative terminal. |
| 22 | COUT | output | Output drive for overvoltage, open circuit, undertemperature and overtemperature faults with high-level active 6V drive capability. |
| 23 | DOUT | output | Output drive for undervoltage, open circuit, undertemperature and overtemperature faults with high-level active 6V drive capability. |
| 24 | TS | input | Temperature sensor input (0V to 1.5V range); connect via 10kΩ resistor to VSS when unused. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-24 |
| Category | Power Management (PMIC) |
| Pins | 24 |

## CAD (KiCad official)

- Symbol: `BQ7721606PWR`
- Footprint: `Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm`
- 3D model: TSSOP-24 (KiCad packages3D, STEP)
- 3D model files: `bq7721606pwr-etched.step` / `bq7721606pwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq7721606pwr.step` / `bq7721606pwr.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 2026-09-23, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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/bq7721606pwr-datasheet.pdf)