# BQ294502DRVR

**Texas Instruments** · Battery Management · WSON-6-EP(2x2)

BQ294502DRVR from Texas Instruments, in a WSON-6-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 | V3 | input | Sense input for positive voltage of the third (topmost) cell; accepts 0-5 V differential input with external RC filter (RIN, CIN) as required in Section 9.2.1. |
| 2 | V2 | input | Sense input for positive voltage of the second (middle) cell; accepts 0-5 V differential input with external RC filter (RIN, CIN) as required in Section 9.2.1. |
| 3 | VSS | power_in | Ground; electrically connected to IC ground and negative terminal of the lowest cell in the battery stack. |
| 4 | V1 | input | Sense input for positive voltage of the first (lowest) cell; accepts 0-5 V differential input with external RC filter (RIN, CIN) as required in Section 9.2.1. |
| 5 | VDD | power_in | Power supply input; operates from 3 to 25 V recommended with quiescent current of 1 µA typical (Section 7.5). |
| 6 | OUT | output | N-channel FET gate driver output; transitions high after 4 s fixed delay when any cell voltage exceeds 4.35 V protection threshold, transitions low when all cell voltages fall below threshold minus 300 mV hysteresis (Section 8.3.2). |
| 7 | PWRPAD | power_in | Thermal pad internally connected to VSS; must be soldered to circuit board VSS ground plane for proper thermal management and mechanical performance (Section 11.1). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-6-EP(2x2) |
| Category | Power Management (PMIC) |
| Pins | 7 |

## CAD (KiCad official)

- Symbol: `BQ294502DRVR`
- Footprint: `Package_SON:WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm`
- 3D model: WSON-6-EP(2x2) (KiCad packages3D, STEP)
- 3D model files: `bq294502drvr-etched.step` / `bq294502drvr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq294502drvr.step` / `bq294502drvr.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/bq294522) (25 pp, sha256 `9a3e52a97d8e79bb`, retrieved 2026-09-27, 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-4-6` (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/bq294502drvr-datasheet.pdf)