SK6619

Suntek · DC-DC Converters · SOT-23-5

SK6619 from Suntek, in a SOT-23-5. 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	EN	input	Chip enable pin: drive EN above 1.2V to turn the part on and below 0.6V to turn it off, and do not leave it floating.
2	GND	power_in	Ground pin for the regulator.
3	SW	output	Power switch output connected to the inductor and to the drains of the internal P-ch and N-ch MOSFET switches; absolute maximum SW voltage is -5V to 9V (AC, less than 10ns, while switching).
4	IN	power_in	Power supply input over a 2.7V to 6V range, which must be closely decoupled to GND with a 10µF or greater ceramic capacitor.
5	FB	input	Output voltage feedback pin connected to an internal resistive divider that is compared to the 0.6V internal reference (feedback voltage 0.585V to 0.615V).

Key specifications

Parameter	Value
Manufacturer	Suntek
Package	SOT-23-5
Category	Power Management (PMIC)
Pins	5

CAD (KiCad official)

Symbol: SK6619
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)
3D model files: sk6619-etched.step / sk6619-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sk6619.step / sk6619.glb are the bare package body.

Provenance

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

Datasheet: Suntek datasheet (12 pp, sha256 bb9c300d34d45a56, 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

# SK6619

**Suntek** · DC-DC Converters · SOT-23-5

SK6619 from Suntek, in a SOT-23-5. 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 | EN | input | Chip enable pin: drive EN above 1.2V to turn the part on and below 0.6V to turn it off, and do not leave it floating. |
| 2 | GND | power_in | Ground pin for the regulator. |
| 3 | SW | output | Power switch output connected to the inductor and to the drains of the internal P-ch and N-ch MOSFET switches; absolute maximum SW voltage is -5V to 9V (AC, less than 10ns, while switching). |
| 4 | IN | power_in | Power supply input over a 2.7V to 6V range, which must be closely decoupled to GND with a 10µF or greater ceramic capacitor. |
| 5 | FB | input | Output voltage feedback pin connected to an internal resistive divider that is compared to the 0.6V internal reference (feedback voltage 0.585V to 0.615V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Suntek |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `SK6619`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `sk6619-etched.step` / `sk6619-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sk6619.step` / `sk6619.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/8590227694114795521) (12 pp, sha256 `bb9c300d34d45a56`, 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/sk6619-datasheet.pdf)