# LKP5222S

**LKWIC** · Voltage Reference · SOP-8

LKP5222S from LKWIC, in a SOP-8. 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 | 10V | output | 10.0V reference output terminal (datasheet lists 10.000V as one of the selectable outputs, with a temperature coefficient of 30ppm/°C max). |
| 2 | 5V | input | 5V select terminal used to choose the reference output voltage (2.500V, 5.000V, 7.500V or 10.000V); the datasheet does not state the select logic levels. |
| 3 | 2.5V | input | 2.5V select terminal used to choose the reference output voltage (2.500V, 5.000V, 7.500V or 10.000V); the datasheet does not state the select logic levels. |
| 4 | COMMON | power_in | Common terminal, specified in the datasheet as low level (公共端, 低电平). |
| 5 | STROBE | input | Control terminal that enables and shuts down the reference output in one step (one-key output shutdown). |
| 6 | VBG | output | Bandgap reference output terminal (能隙基准输出端). |
| 7 | CAP | passive | Noise-reduction terminal; an external 0.01μF to 0.1μF capacitor is connected here to improve the circuit characteristics. |
| 8 | V+ | power_in | Supply input terminal; the input voltage range is 4.5V to 30V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LKWIC |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## 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 range |  | 4.5 |  | 30 | V |  | 4 |
| Voltage output accuracy |  | -0.1 |  | 0.1 | % |  | 4 |
| Temperature coefficient |  |  |  | 30 | ppm/℃ |  | 4 |
| Quiescent current (low static power) |  |  |  | 0.8 | mA |  | 4 |
| Maximum output current | IMAX |  |  | 5 | mA |  | 4 |

## CAD (KiCad official)

- Symbol: `LKP5222S`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `lkp5222s-etched.step` / `lkp5222s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lkp5222s.step` / `lkp5222s.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LKWIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590918848311222272) (7 pp, sha256 `9ed4e71854303976`, retrieved 2026-10-20, 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/lkp5222s-datasheet.pdf)