# BQ29419PWR

**Texas Instruments** · Battery Management · TSSOP-8

BQ29419PWR from Texas Instruments, in a TSSOP-8. 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 | VC1 | input | Sense voltage input for the most positive cell; recommended VC1 input range is 0 V to 25 V, with an absolute maximum of -0.3 V to 28 V. |
| 2 | VC2 | input | Sense voltage input for the second most positive cell; recommended VC2 input range is 0 V to 25 V, with an absolute maximum of -0.3 V to 28 V. |
| 3 | VC3 | input | Sense voltage input for the third most positive cell; recommended VC3 input range is 0 V to 25 V, with an absolute maximum of -0.3 V to 28 V. |
| 4 | GND | power_in | Ground pin; all device voltages are specified with respect to this ground, except the cell-to-cell differential voltages. |
| 5 | VC4 | input | Sense voltage input for the least positive cell; the VC4-to-GND input is limited to 0 V to 5 V in recommended operation, with an absolute maximum of -0.3 V to 28 V. |
| 6 | CD | passive | External capacitor connection that sets the programmable overvoltage delay; the CD pin must reach 1.2 V to activate OUT, has an absolute maximum of -0.3 V to 28 V, and is clamped to GND when no overvoltage is present. |
| 7 | VDD | power_in | Power supply input with a recommended range of 4 V to 25 V and an absolute maximum of -0.3 V to 28 V. |
| 8 | OUT | output | Overvoltage protection output that transitions high when the CD pin reaches 1.2 V to activate the external NCH FET that blows the battery fuse; absolute maximum is -0.3 V to 28 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `BQ29419PWR`
- Footprint: `Package_SO:TSSOP-8_3x3mm_P0.65mm`
- 3D model: TSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `bq29419pwr-etched.step` / `bq29419pwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq29419pwr.step` / `bq29419pwr.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/lit/ds/symlink/bq29419.pdf) (21 pp, sha256 `ba3496ab8d0bc500`, retrieved 2026-10-08, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (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/bq29419pwr-datasheet.pdf)