# LW5912N11E

**Lewa Micro** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DFN1x1-4L

LW5912N11E from Lewa Micro, in a DFN1x1-4L. 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 | VOUT | power_out | Regulated output voltage pin; connect a low-ESR ceramic capacitor of at least 1µF from OUT to GND, with an internal pulldown discharging OUT when VEN < VEN(LOW). Output is selectable from 0.8V to 5.0V, and VOUT is limited to VIN+0.3V (absolute maximum). |
| 2 | GND | power_in | Ground pin; the device thermal pad is electrically connected to this GND node and should be tied to the GND plane for thermal performance. |
| 3 | EN | input | Enable pin: drive above VEN(HI) (1.5V) to turn the regulator on and below VEN(LO) (0.6V) to shut it down; EN must not be left floating and the recommended EN voltage range is 0 to 7.0V. |
| 4 | VIN | power_in | Input supply pin with a recommended operating range of 1.6V to 7.0V (absolute maximum -0.3V to 9.0V); use the recommended or larger ceramic input capacitor from IN to ground, placed as close to the device as possible. |
| 5 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Lewa Micro |
| Package | DFN1x1-4L |
| Category | Power Management (PMIC) |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `LW5912N11E`
- Footprint: `Package_DFN_QFN:UDFN-4-1EP_1x1mm_P0.65mm_EP0.48x0.48mm`
- 3D model: DFN1x1-4L (KiCad packages3D, STEP)
- 3D model files: `lw5912n11e-etched.step` / `lw5912n11e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lw5912n11e.step` / `lw5912n11e.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Lewa Micro datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758137664019415040) (25 pp, sha256 `53294d4f1daeb984`, 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/lw5912n11e-datasheet.pdf)