# Texas Instruments LM251772RHAR

Four-switch buck-boost DC/DC controller with I2C interface, 40-pin VQFN (RHA) 6 x 6 mm.

| | |
|---|---|
| Manufacturer | Texas Instruments |
| MPN | LM251772RHAR |
| Category | ic (Buck-boost controller) |
| Package | VQFN-40 (RHA), 6 x 6 x 1.0 mm, 0.5 mm pitch, exposed pad |
| Mouser | [595-LM251772RHAR](https://www.mouser.com/ProductDetail/Texas-Instruments/LM251772RHAR) |
| Datasheet | [lm251772.pdf](https://www.ti.com/lit/ds/symlink/lm251772.pdf) |

## Files

- `lm251772rhar.kicad_mod` footprint (KiCad)
- `lm251772rhar.kicad_sym` symbol (KiCad)
- `lm251772rhar.step` 3D model (STEP, Z-up, seated on z = 0, centred on the footprint origin)
- `lm251772rhar.lbr` Fusion / EAGLE library part (adom-lbr 2.47.7 from the files above with this page's metadata; no embedded 3D, bind the STEP)

## Provenance

- `lm251772rhar.kicad_mod` and `lm251772rhar.kicad_sym`: converted from the EAGLE package `QFN50P600X600X100-41N` (device `(default)`) in `LM251772RHAR.lbr` by a direct EAGLE-to-KiCad translation (pad positions, sizes, rotations and paste/mask settings copied exactly; Y axis flipped to KiCad convention). Source .lbr sha256/16 c6fde427e248c667.
- Conversion note: pin-1 dot on EAGLE layer 25 (tNames) mapped to F.SilkS
- Conversion note: added F.CrtYd rectangle -3.88..3.88 x -3.88..3.88 mm (pads + fab outline + 0.25 mm); the EAGLE package had none
- `lm251772rhar.step`: the 3D model bound to this part in the same Fusion library, byte-identical copy (original sha256/16 cf3840041b4e1804).
- Origin: From the owner's Fusion library A2retro Fusion Designs/LEDster/772PWR/library (the owner's own part). The LM251772RHAR part was originally a SamacSys download (SamacSys terms apply to its geometry).

## License

Adom-authored content CC-BY-4.0; third-party files keep their upstream terms (see `LICENSE`).