# ETA7017CSE

**etasolution** · Power Distribution Switches · WLCSP0.87x0.87-4

ETA7017CSE from etasolution, in a WLCSP0.87x0.87-4. 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 |
|---|---|---|---|
| A1 | OUT | power_out | Switch output; connect a 1uF ceramic capacitor from OUT to GND as close as possible to the IC. |
| B1 | GND | power_in | IC ground. |
| A2 | IN | power_in | Switch input (operating range 1.4V to 5.5V); connect a 1uF ceramic capacitor from IN to GND as close as possible to the IC. |
| B2 | EN | input | Enable input; logic high turns on the power switch, and the part has an internal 10 Mohm EN pull-down resistor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | etasolution |
| Package | WLCSP0.87x0.87-4 |
| Category | Power Management (PMIC) |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `ETA7017CSE`
- Footprint: `Package_CSP:WLCSP-4_0.89x0.89mm_Layout2x2_P0.5mm`
- 3D model: WLCSP0.87x0.87-4, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.35 mm nominal DSBGA height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `eta7017cse-etched.step` / `eta7017cse-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `eta7017cse.step` / `eta7017cse.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/8590905768617603072) (6 pp, sha256 `9f27a031b03f82fb`, 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/eta7017cse-datasheet.pdf)