# TPS2551DBVR

**Texas Instruments** · Power Distribution Switches · SOT-23-6

TPS2551DBVR from Texas Instruments, in a SOT-23-6. 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 | IN | power_in | Input voltage for the power switch; connect a 0.1 μF or greater ceramic capacitor from IN to GND as close to the IC as possible. |
| 2 | GND | power_in | Ground connection, which the datasheet says should be connected externally to the PowerPAD (the DBV package has no PowerPAD pad). |
| 3 | EN | input | Enable input for the TPS2551 (active high); logic high turns on the power switch. |
| 4 | FAULT | output | Active-low open-drain output, asserted during overcurrent, overtemperature, or reverse-voltage conditions. |
| 5 | ILIM | input | External resistor sets the current-limit threshold; recommended 14.3 kΩ ≤ RILIM ≤ 80.6 kΩ. |
| 6 | OUT | output | Power-switch output. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `TPS2551DBVR`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `tps2551dbvr-etched.step` / `tps2551dbvr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps2551dbvr.step` / `tps2551dbvr.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/tps2551.pdf) (35 pp, sha256 `3e5b44a754899833`, retrieved 2026-10-12, 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/tps2551dbvr-datasheet.pdf)