# ETA6021S2F

**etasolution** · Power Distribution Switches · SOT23-5

ETA6021S2F 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 | IN | power_in | Power input with an operating range of 2.5 V to 5.5 V; bypass with a 4.7 µF capacitor to GND as close to the device as possible. |
| 2 | GND | power_in | Ground reference pin for the device. |
| 3 | EN | input | Enable pin that controls the switch; the datasheet gives an EN logic high threshold of 1 V and a logic low threshold of 0.66 V at VIN = 5.5 V. |
| 4 | ILIM | passive | Current limit threshold setting pin; connect a precision resistor from this pin to GND to program the current limit from 75 mA to 1.7 A. |
| 5 | OUT | power_out | Current-limited switch output that must not exceed VIN + 0.3 V to GND; bypass with a capacitor greater than 120 µF if used for USB. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | etasolution |
| Package | SOT23-5 |
| 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 |  | 2.5 |  | 5.5 | V |  | 2 |
| Input Shutdown Current |  |  | 0.5 | 1.5 | µA |  | 2 |
| Reverse Leakage Current |  |  | 0.5 | 2 | µA | VOUT=5.5V, Vin=0V, VEN=High | 2 |
| Power Switch On Resistance (-40°C≤TJ≤120°C) |  |  |  | 145 | mΩ | ISW=500mA, -40°C≤TJ≤120°C | 2 |
| IN to GND voltage |  | -0.3 |  | 6 | V |  | 2 |
| OUT, ILIM, EN to GND voltage (maximum printed as VIN+0.3V, not numeric) |  | -0.3 |  |  | V |  | 2 |
| Maximum Power Dissipation |  |  |  | 1 | W |  | 2 |
| Operating Temperature Range |  | -40 |  | 85 | °C |  | 2 |
| Storage Temperature Range |  | -55 |  | 150 | °C |  | 2 |
| EN Input Logic High threshold |  |  | 1 |  | V | VIN=5.5V | 2 |
| EN Input Logic Low threshold |  |  | 0.66 |  | V |  | 2 |
| Input UVLO Rising |  |  | 2.35 |  | V | Hysteresis=25mV | 2 |
| Input Supply Current |  |  | 120 |  | µA | RILIM=20K | 2 |
| Power Switch On Resistance |  |  | 95 |  | mΩ | ISW=500mA | 2 |
| Current limit Threshold |  |  | 1.705 |  | A | RILIM=15K | 2 |
| Current limit Threshold |  |  | 1.295 |  | A | RILIM=20K | 2 |
| Current limit Threshold |  |  | 0.525 |  | A | RILIM=49.9K | 2 |
| Response time to Short-circuit |  |  | 1 |  | µS |  | 2 |
| Reverse-voltage Threshold (VOUT-VIN) |  |  | 150 |  | mV |  | 2 |
| Thermal Shutdown |  |  | 160 |  | °C |  | 2 |
| Thermal Shutdown In Current Limit |  |  | 135 |  | °C |  | 2 |
| Thermal Shutdown Hysteresis |  |  | 15 |  | °C |  | 2 |

## CAD (KiCad official)

- Symbol: `ETA6021S2F`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT23-5 (KiCad packages3D, STEP)
- 3D model files: `eta6021s2f-etched.step` / `eta6021s2f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `eta6021s2f.step` / `eta6021s2f.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/8603009772467998720) (8 pp, sha256 `27df1d0bf471c334`, 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/eta6021s2f-datasheet.pdf)