# BQ294704DSGT

**Texas Instruments** · Battery Management · WSON-8-EP(2x2)

BQ294704DSGT from Texas Instruments, in a WSON-8-EP(2x2). 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 | VDD | power_in | Power supply input (3V to 20V operating range); connect with series resistor (100Ω typical) and 0.1µF decoupling capacitor to VSS. |
| 2 | V4 | input | Analog input for fourth battery cell voltage measurement from battery pack bottom (0-5V range); add 1kΩ series resistor and 0.1µF capacitor to VSS for noise filtering. |
| 3 | V3 | input | Analog input for third battery cell voltage measurement from battery pack bottom (0-5V range); add 1kΩ series resistor and 0.1µF capacitor to VSS for noise filtering. |
| 4 | V2 | input | Analog input for second battery cell voltage measurement from battery pack bottom (0-5V range); add 1kΩ series resistor and 0.1µF capacitor to VSS for noise filtering. |
| 5 | V1 | input | Analog input for lowest battery cell voltage measurement (0-5V range); add 1kΩ series resistor and 0.1µF capacitor to VSS for noise filtering. |
| 6 | VSS | power_in | Ground connection to IC and negative terminal of lowest battery cell; input leakage current <100nA when all cells remain below overvoltage protection threshold. |
| 7 | CD | output | External delay timer capacitor connection; upon overvoltage detection IC charges capacitor and then discharges at fixed current to VSS over 1-2 seconds nominal (0.1µF capacitor); includes timeout detection for capacitor open or short circuit faults. |
| 8 | OUT | output | CMOS active-high overvoltage fault signal output; sources minimum VDD-0.3V (4.5mA) during overvoltage condition and sinks 250-400mV (up to 14mA) during normal operation for driving external NMOS FET gate. |
| 9 | PowerPAD | power_in | Exposed thermal pad for heat dissipation and mechanical performance; TI recommends connecting to VSS. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-8-EP(2x2) |
| Category | Power Management (PMIC) |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `BQ294704DSGT`
- Footprint: `Package_SON:WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm`
- 3D model: WSON-8-EP(2x2) (KiCad packages3D, STEP)
- 3D model files: `bq294704dsgt-etched.step` / `bq294704dsgt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq294704dsgt.step` / `bq294704dsgt.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/bq2947) (30 pp, sha256 `0bb66de94396f561`, 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/bq294704dsgt-datasheet.pdf)