# ETA3448S2F

**etasolution** · DC-DC Converters · SOT23-5

ETA3448S2F from etasolution, in a SOT23-5. 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 | EN | input | Enable input, high voltage level enables the device; for automatic start-up connect EN to VIN with a pull-up resistor (rising threshold 1.2V min, falling 0.4V max). |
| 2 | GND | power_in | Ground. |
| 3 | SW | passive | Switching node inductor connection; connect an inductor between SW and the regulator output. |
| 4 | VIN | power_in | Supply voltage input, 2.5V to 5.5V operating range, bypass with a 22µF ceramic capacitor to GND. |
| 5 | FB | input | Feedback input; connect an external resistor divider from the output to FB and GND to set VOUT (0.6V reference). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | etasolution |
| Package | SOT23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `ETA3448S2F`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT23-5 (KiCad packages3D, STEP)
- 3D model files: `eta3448s2f-etched.step` / `eta3448s2f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `eta3448s2f.step` / `eta3448s2f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [etasolution datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590904229177335808) (7 pp, sha256 `73f77b3b1d4b56f8`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (vision), consensus `claude-opus-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/eta3448s2f-datasheet.pdf)