# DK112

**Shenzhen DongKe Semicon** · AC-DC Controllers And Regulators · DIP-8

DK112 from Shenzhen DongKe Semicon, in a DIP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Gnd | power_in | Ground pin for power return path. |
| 2 | Gnd | power_in | Ground pin for power return path. |
| 3 | Fb | input | Feedback control pin with voltage range 1.6V to 3.6V; requires external filter capacitor of 10nF to 100nF. |
| 4 | Vcc | power_in | Power supply pin with operating voltage range 4V to 6V and absolute maximum rating 9V. |
| 5 | Collector | output | Collector output pin connected to high-voltage switch transistor collector and transformer with maximum voltage rating 780V. |
| 6 | Collector | output | Collector output pin connected to high-voltage switch transistor collector and transformer with maximum voltage rating 780V. |
| 7 | Collector | output | Collector output pin connected to high-voltage switch transistor collector and transformer with maximum voltage rating 780V. |
| 8 | Collector | output | Collector output pin connected to high-voltage switch transistor collector and transformer with maximum voltage rating 780V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen DongKe Semicon |
| Package | DIP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `DK112`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files: `dk112-etched.step` / `dk112-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dk112.step` / `dk112.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen DongKe Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588887503646969856) (14 pp, sha256 `b87797a2f217787e`, retrieved 2026-09-22, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/dk112-datasheet.pdf)