# TX4204

**XDS** · DC-DC Converters · SOT-23-3

TX4204 from XDS, in a SOT-23-3. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground reference for the device. Connect to system ground. |
| 2 | SW | power_out | Switching node. Connect to the boost inductor (typ. 22uH) between VIN and this pin. Internal power switch drives this node; max SW current 0.3A. |
| 3 | VOUT | power_out | Regulated boost output voltage (nominal 3.3V, ±2.5%). Connect to output filter capacitor (typ. 100uF). Absolute maximum 5V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | XDS |
| Package | SOT-23-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `TX4204TXX`
- `TX4204LXX`
- `TX4204CXX`

## CAD (KiCad official)

- Symbol: `TX4204`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `tx4204-etched.step` / `tx4204-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tx4204.step` / `tx4204.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [XDS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756360748207480832) (9 pp, sha256 `8f1d2a99970205c3`, retrieved 2026-08-17, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tx4204-datasheet.pdf)