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ETA3409S2F
Public Made by Adomby adom
etasolution DC-DC Converters, SOT23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ETA3409S2F
etasolution · DC-DC Converters · SOT23-5
ETA3409S2F 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; EN input low voltage is 0.4V max and high voltage is 1.5V min, with EN input current of 1µA max. |
| 2 | GND | power_in | Ground pin, connected to the input and output capacitor returns and the feedback divider. |
| 3 | SW | output | Switching node connected to the inductor, with internal NMOS/PMOS switches, PMOS current limit of 4A typ and SW leakage of 10µA max. |
| 4 | IN | power_in | Input supply pin operating from 2.4V to 7.3V with UVLO rising threshold of 2.4V typ, absolute maximum 9V. |
| 5 | FB | input | Feedback input regulated to 0.6V typ (0.588V to 0.612V) via the R1/R2 divider, with FB input current of 1µA max. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | etasolution |
| Package | SOT23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
ETA3409S2F - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT23-5 (KiCad packages3D, STEP)
- 3D model files:
eta3409s2f-etched.step/eta3409s2f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);eta3409s2f.step/eta3409s2f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: etasolution datasheet (7 pp, sha256
e1efa18cbd1fce87, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).
# ETA3409S2F
**etasolution** · DC-DC Converters · SOT23-5
ETA3409S2F 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; EN input low voltage is 0.4V max and high voltage is 1.5V min, with EN input current of 1µA max. |
| 2 | GND | power_in | Ground pin, connected to the input and output capacitor returns and the feedback divider. |
| 3 | SW | output | Switching node connected to the inductor, with internal NMOS/PMOS switches, PMOS current limit of 4A typ and SW leakage of 10µA max. |
| 4 | IN | power_in | Input supply pin operating from 2.4V to 7.3V with UVLO rising threshold of 2.4V typ, absolute maximum 9V. |
| 5 | FB | input | Feedback input regulated to 0.6V typ (0.588V to 0.612V) via the R1/R2 divider, with FB input current of 1µA max. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | etasolution |
| Package | SOT23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
## CAD (KiCad official)
- Symbol: `ETA3409S2F`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT23-5 (KiCad packages3D, STEP)
- 3D model files: `eta3409s2f-etched.step` / `eta3409s2f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `eta3409s2f.step` / `eta3409s2f.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/8590904807224270848) (7 pp, sha256 `e1efa18cbd1fce87`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+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/eta3409s2f-datasheet.pdf)