# ETA2822E8A

**etasolution** · DC-DC Converters · SOP-8-EP

ETA2822E8A from etasolution, in a SOP-8-EP. 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 | SW | output | Inductor connection: connect an inductor between SW and the regulator output, with SW voltage limited to -0.3V to VIN+0.3V per the absolute maximum ratings. |
| 2 | ROSC | passive | Frequency setting: connect a resistor from this pin to GND to set the switching frequency, which the datasheet states can be programmed from 100 kHz to 2 MHz. |
| 3 | RCOMP | passive | Cable resistance compensation adjust: connect a resistor from this pin to GND to compensate for the voltage drop due to cord resistance. |
| 4 | FB | input | Feedback input: connect an external resistor divider from the output to FB and GND to set VOUT, with FB voltage of 0.776 V to 0.824 V (0.800 V typical). |
| 5 | ILIM | passive | Current limit setting: connect a resistor from this pin to GND to set the output current limit value. |
| 6 | BST | passive | Bootstrap pin: connect a 100nF capacitor from this pin to SW, with BST voltage limited to -0.3V to SW+6V per the absolute maximum ratings. |
| 7 | VIN | power_in | Supply voltage: bypass with a 10µF ceramic capacitor to GND; the input operating range is 4V to 36V, with a 42V standoff voltage. |
| 8 | EN | input | Enable pin: drive high to enable the part and low to disable it, with EN voltage limited to -0.3V to VIN+0.3V per the absolute maximum ratings. |
| 9 | GND | power_in | Ground connection on the exposed pad of the ESOP-8 package, which the datasheet lists as pin 9. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | etasolution |
| Package | SOP-8-EP |
| Category | Power Management (PMIC) |
| Pins | 9 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| FB Voltage |  | 0.776 | 0.8 | 0.824 | V |  | 2 |
| FB Input Current |  | -1 | 0 | 1 | μA |  | 2 |
| Input Voltage Range |  | 4 |  | 36 | V |  | 2 |
| Input Supply Current |  |  | 0.85 | 1 | mA | VFB=0.85V. no switching | 2 |
| EN Input Current |  |  | 0.1 | 5 | μA | VIN=12V, VEN=5V | 2 |
| EN Logic High Voltage |  | 0.91 | 1.05 | 1.29 | V | Rising | 2 |
| EN Logic Low Voltage |  | 0.81 | 0.96 | 0.99 | V | Falling | 2 |
| IN Voltage |  | -0.3 |  | 42 | V |  | 2 |
| SW, EN Voltage |  | -0.3 |  |  | V | Maximum printed as VIN+0.3V (expression, not numeric) | 2 |
| BST Voltage |  | -0.3 |  |  | V | Maximum printed as SW+6V (expression, not numeric) | 2 |
| Other Pins Voltage |  | -0.3 |  | 6 | V |  | 2 |
| Operating Temperature Range |  | -40 |  | 85 | °C |  | 2 |
| Storage Temperature Range |  | -55 |  | 150 | °C |  | 2 |
| ESD HBM (Human Body Mode) |  |  |  | 2 | KV | Human Body Model | 2 |
| ESD MM (Machine Mode) |  |  |  | 200 | V | Machine Model | 2 |
| Input Standoff Voltage |  |  | 42 |  | V |  | 2 |
| Input UVLO Rising |  |  | 3.8 |  | V | Rising. Hysteresis=150mV | 2 |
| Input OVP Rising |  |  | 37.5 |  | V | Rising. Hysteresis=1.5V | 2 |
| Input Shutdown Current |  |  | 6 |  | μA |  | 2 |
| Switching Frequency |  |  | 500 |  | KHz | ROSC=200KΩ | 2 |
| FoldBack Frequency |  |  | 125 |  | KHz | VFB=0, ROSC=200KΩ | 2 |
| Maximum Duty Cycle |  |  | 90 |  | % | fOSC < 600KHz | 2 |
| High side Switch On Resistance |  |  | 100 |  | mΩ | ISW=200mA | 2 |
| High side Switch Current Limit |  |  | 4 |  | A | RILIM=250KΩ | 2 |
| SW Leakage Current |  |  | 10 |  | μA | VIN=12V,VSW=0, EN= GND | 2 |
| Soft-Start Time |  |  | 200 |  | μs | IOUT=0A, fOSC =300kHz | 2 |
| Short Circuit Hiccup time ON |  |  | 0.5 |  | ms |  | 2 |
| Short Circuit Hiccup time OFF |  |  | 100 |  | ms |  | 2 |
| Thermal Shutdown |  |  | 150 |  | °C | Rising, Hysteresis=30°C | 2 |
| Thermal Resistance θJA (ESOP8) | θJA |  | 50 |  | °C/W | ESOP8 package | 2 |

## CAD (KiCad official)

- Symbol: `ETA2822E8A`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm`
- 3D model: SOP-8-EP (KiCad packages3D, STEP)
- 3D model files: `eta2822e8a-etched.step` / `eta2822e8a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `eta2822e8a.step` / `eta2822e8a.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/8590919056222601216) (7 pp, sha256 `a17115f312f9598d`, retrieved 2026-10-16, 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/eta2822e8a-datasheet.pdf)