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ETA3427S2F
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ETA(钰泰) DC-DC Converters, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ETA3427S2F
ETA(钰泰) · DC-DC Converters · SOT-23-5
ETA3427S2F from ETA(钰泰), in a SOT-23-5. 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 pin: pull high to enable the regulator and pull low to disable it; the EN input low maximum is 0.4V and the input high minimum is 1.5V. |
| 2 | GND | power_in | Ground pin for the regulator, which is the return for the input supply and the output. |
| 3 | SW | output | Inductor connection: connect a 2.2uH inductor between SW and the regulator output. |
| 4 | VIN | power_in | Supply voltage input, operating from 2.6V to 7V; bypass with a 10uF ceramic capacitor to GND. |
| 5 | FB | input | Feedback voltage pin: connect an external resistor divider from the output to FB and GND to set the output voltage, with a 0.788V typical FB voltage. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ETA(钰泰) |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage Range | 2.6 | 7 | V | 2 | |||
| FB Voltage | 0.778 | 0.788 | 0.798 | V | 2 | ||
| Switching Frequency | 1.05 | 1.4 | 1.75 | MHz | 2 | ||
| Input Supply Current | 2 | 3 | μA | No Switching | 2 | ||
| VIN, SW, OUT, EN Voltage | -0.3 | 7.5 | V | 2 | |||
| Operating Temperature Range | -40 | 85 | °C | 2 | |||
| Storage Temperature Range | -55 | 150 | °C | 2 | |||
| ESD HBM (Human Body Model) | 3 | KV | HBM | 2 | |||
| Thermal Resistance θJC (SOT23-5) | θJC | 90 | °C/W | 2 |
CAD (KiCad official)
- Symbol:
ETA3427S2F - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
eta3427s2f-etched.step/eta3427s2f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);eta3427s2f.step/eta3427s2f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ETA(钰泰) datasheet (7 pp, sha256
eda411679e127e43, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).
# ETA3427S2F
**ETA(钰泰)** · DC-DC Converters · SOT-23-5
ETA3427S2F from ETA(钰泰), in a SOT-23-5. 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 pin: pull high to enable the regulator and pull low to disable it; the EN input low maximum is 0.4V and the input high minimum is 1.5V. |
| 2 | GND | power_in | Ground pin for the regulator, which is the return for the input supply and the output. |
| 3 | SW | output | Inductor connection: connect a 2.2uH inductor between SW and the regulator output. |
| 4 | VIN | power_in | Supply voltage input, operating from 2.6V to 7V; bypass with a 10uF ceramic capacitor to GND. |
| 5 | FB | input | Feedback voltage pin: connect an external resistor divider from the output to FB and GND to set the output voltage, with a 0.788V typical FB voltage. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ETA(钰泰) |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage Range | | 2.6 | | 7 | V | | 2 |
| FB Voltage | | 0.778 | 0.788 | 0.798 | V | | 2 |
| Switching Frequency | | 1.05 | 1.4 | 1.75 | MHz | | 2 |
| Input Supply Current | | | 2 | 3 | μA | No Switching | 2 |
| VIN, SW, OUT, EN Voltage | | -0.3 | | 7.5 | V | | 2 |
| Operating Temperature Range | | -40 | | 85 | °C | | 2 |
| Storage Temperature Range | | -55 | | 150 | °C | | 2 |
| ESD HBM (Human Body Model) | | | | 3 | KV | HBM | 2 |
| Thermal Resistance θJC (SOT23-5) | θJC | | 90 | | °C/W | | 2 |
## CAD (KiCad official)
- Symbol: `ETA3427S2F`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `eta3427s2f-etched.step` / `eta3427s2f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `eta3427s2f.step` / `eta3427s2f.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [ETA(钰泰) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604748211579990016) (7 pp, sha256 `eda411679e127e43`, retrieved 2026-10-17, 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/eta3427s2f-datasheet.pdf)