# SK6018D4-30

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

SK6018D4-30 from Suntek, 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 | output | Regulated LDO output, with output range 1.2V to 3.6V in 0.1V steps and output current up to 300mA at VIN-VOUT=0.5V (absolute maximum output current 350mA). |
| 2 | GND | power_in | Ground reference pin for the regulator; the datasheet also lists the thermal pad as GND. |
| 3 | EN | input | Active-high enable that must not be left floating; VENH is at least 1.2V and VENL is at most 0.4V, with an input current of 1.0µA maximum. |
| 4 | VIN | power_in | Power input with a recommended supply range of 2.5V to 6.5V and an absolute maximum input voltage of -0.3V to 8V. |
| 5 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

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

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | -0.3 |  | 8 | V |  | 2 |
| Output Current | IOUT |  |  | 350 | mA |  | 2 |
| Power Dissipation DFN1x1_4L | PDMAX |  |  | 0.6 | W |  | 2 |
| Thermal Resistance DFN1x1_4L | RθJA |  |  | 250 | ℃/W |  | 2 |
| Junction Temperature | TJ | -40 |  | 125 | ℃ |  | 2 |
| Ambient Temperature | TA | -40 |  | 85 | ℃ |  | 2 |
| Storage Temperature | TSTG | -55 |  | 150 | ℃ |  | 2 |
| Package Lead Soldering Temperature | TSOLDER |  |  | 260 | ℃ | 10s | 2 |
| Supply Voltage | VIN | 2.5 |  | 6.5 | V |  | 3 |
| Operating Temperature | TOPT | -40 |  | 85 | ℃ |  | 3 |

## CAD (KiCad official)

- Symbol: `SK6018D4-30`
- Footprint: `Package_DFN_QFN:UDFN-4-1EP_1x1mm_P0.65mm_EP0.48x0.48mm`
- 3D model: DFN1x1-4L (KiCad packages3D, STEP)
- 3D model files: `sk6018d4-30-etched.step` / `sk6018d4-30-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sk6018d4-30.step` / `sk6018d4-30.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Suntek datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603047616385474560) (8 pp, sha256 `0e2f8e7b8ef173a8`, 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/sk6018d4-30-datasheet.pdf)