# TPS61251DSGT

**Texas Instruments** · Power Management Specialized - PMIC · WSON-8-EP(2x2)

TPS61251DSGT 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 | GND | power_in | Ground. |
| 2 | VOUT | power_out | Boost converter output. |
| 3 | FB | input | Voltage feedback pin. |
| 4 | ILIM | input | Adjustable average input current limit that can be connected to VIN for maximum limit or to GND for minimum limit. |
| 5 | PG | output | Output power good signal with open-drain output; logic 1 indicates good condition, logic 0 indicates failure. |
| 6 | EN | input | Enable input; logic 1 enables device, logic 0 disables device. |
| 7 | SW | output | Connection for inductor. |
| 8 | VIN | power_in | Supply voltage for power stage with recommended input range of 2.3 V to 6.0 V. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `TPS61251DSGT`
- Footprint: `Package_SON:WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm`
- 3D model: WSON-8-EP(2x2) (KiCad packages3D, STEP)
- 3D model files: `tps61251dsgt-etched.step` / `tps61251dsgt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps61251dsgt.step` / `tps61251dsgt.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/tps61251) (30 pp, sha256 `7651ff027e28d3fc`, retrieved 2026-10-06, 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/tps61251dsgt-datasheet.pdf)