# ETA8103S2G

**etasolution** · DC-DC Converters · SOT-23-6

ETA8103S2G from etasolution, 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 | BST | passive | Bootstrap pin; connect a 10nF capacitor from this pin to SW to supply the high-side gate drive. |
| 2 | GND | power_in | Ground reference for the device. |
| 3 | FB | input | Feedback input; connect an external resistor divider from the output to FB and GND to set VOUT, with VREF of 0.6V typical and FB absolute maximum of -0.3V to 6V. |
| 4 | EN | input | Enable pin; drive high to enable the part and low or floating to disable it, with VIN,EN absolute maximum of -0.3V to 19V. |
| 5 | VIN | power_in | Supply voltage with a recommended input range of 4V to 18V; bypass with a 10µF ceramic capacitor to GND. |
| 6 | SW | passive | Inductor connection; connect an inductor between SW and the regulator output, with SW voltage rated -0.3V (-5V for under 10ns) to 19V (23V for under 10ns). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `ETA8103S2G`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `eta8103s2g-etched.step` / `eta8103s2g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `eta8103s2g.step` / `eta8103s2g.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/8590916643898150912) (8 pp, sha256 `c0b84a2631e574d9`, retrieved 2026-10-09, tier: lcsc)
- **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/eta8103s2g-datasheet.pdf)