# LW5212N11E

**Lewa Micro** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DFN-4L(1x1)

LW5212N11E from Lewa Micro, in a DFN-4L(1x1). 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; the recommended VOUT pin voltage range is 0.8V to 5.0V, and this LW5212N11E is the 1.2V option, with output current rated 0 to 500mA. |
| 2 | GND | power_in | Ground reference pin, listed on the datasheet as '2,E-PAD' so the exposed pad is also GND; the layout guidance is to connect separate VIN and VOUT ground planes only at this GND pin. |
| 3 | EN | input | Chip enable input; the datasheet gives VENH min 1.5V and VENL max 0.5V, with the EN pin voltage recommended range 0 to 6.0V. |
| 4 | VIN | power_in | Power supply input with recommended range 1.5V to 6.0V and absolute maximum rating -0.3V to 7.0V. |
| 5 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Lewa Micro |
| Package | DFN-4L(1x1) |
| Category | Power Management (PMIC) |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `LW5212N11E`
- Footprint: `Package_DFN_QFN:UDFN-4-1EP_1x1mm_P0.65mm_EP0.48x0.48mm`
- 3D model: DFN-4L(1x1) (KiCad packages3D, STEP)
- 3D model files: `lw5212n11e-etched.step` / `lw5212n11e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lw5212n11e.step` / `lw5212n11e.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/8756664195351879680) (18 pp, sha256 `d70e59e081543d55`, 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/lw5212n11e-datasheet.pdf)