# MG6228D4-18

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

MG6228D4-18 from Megain, 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 | Output voltage pin; the regulator delivers up to 500 mA (maximum output current) with output voltage options from 1.8 V to 5 V. |
| 2 | GND | power_in | Ground terminal. |
| 3 | EN | input | Active-high enable pin: VEN of at least 0.8 V (VENHI) enables the output and VEN of at most 0.2 V (VENLO) disables it, with absolute maximum VEN of -0.3 V to +6.5 V. |
| 4 | VIN | power_in | Input voltage pin; recommended VIN is 2.5 V to 6 V, with absolute maximum VIN of -0.3 V to +6.5 V. |
| 5 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `MG6228D4-18`
- Footprint: `Package_DFN_QFN:UDFN-4-1EP_1x1mm_P0.65mm_EP0.48x0.48mm`
- 3D model: DFN-4L(1x1) (KiCad packages3D, STEP)
- 3D model files: `mg6228d4-18-etched.step` / `mg6228d4-18-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mg6228d4-18.step` / `mg6228d4-18.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Megain datasheet](docs/mg6228d4-18-datasheet.pdf) (9 pp, sha256 `c1e78e55e0bf9aa9`, retrieved 2026-10-09, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/mg6228d4-18-datasheet.pdf)