# BQ29732DSER

**Texas Instruments** · Battery Management · WSON-6(1.5x1.5)

BQ29732DSER from Texas Instruments, in a WSON-6(1.5x1.5). 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 | No Connection (electrically open). |
| 2 | COUT | output | Gate Drive Output for Charge FET; driven from BAT supply and transitions from high to low upon fault detection to turn OFF the CHG FET. |
| 3 | DOUT | output | Gate Drive Output for Discharge FET; driven from BAT supply and transitions from high to low upon fault detection to turn OFF the DSG FET. |
| 4 | VSS | power_in | Cell Negative ground reference for internal circuits performing cell voltage measurements and overcurrent protection. |
| 5 | BAT | power_in | Supply Input connected to positive battery terminal; requires 0.1µF input capacitor to ground for noise filtering. |
| 6 | V- | power_in | Voltage Sense Node for measuring fault detection conditions; forms differential measurement with VSS and 2.2kΩ resistor to Pack- terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-6(1.5x1.5) |
| Category | Power Management (PMIC) |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `BQ29732DSER`
- Footprint: `Package_SON:WSON-6_1.5x1.5mm_P0.5mm`
- 3D model: WSON-6(1.5x1.5) (KiCad packages3D, STEP)
- 3D model files: `bq29732dser-etched.step` / `bq29732dser-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq29732dser.step` / `bq29732dser.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/bq2970) (35 pp, sha256 `d01a24783b0ea8a1`, retrieved 2026-10-05, 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-4-5-20251001` (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/bq29732dser-datasheet.pdf)