# LKA1200ST

**LKWIC** · Comparators · SOT-23-5

LKA1200ST from LKWIC, 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 | VOUT | output | Comparator output terminal, which is push-pull and needs no external pull-up resistor according to the datasheet. |
| 2 | V- | power_in | Ground terminal (negative supply, V-) of the comparator, which sets the lower end of the supply range. |
| 3 | INP | input | Non-inverting comparator input, with a rail-to-rail common-mode input range extending to (V- - 200mV) to (V+ + 200mV). |
| 4 | INN | input | Inverting comparator input, with a rail-to-rail common-mode input range extending to (V- - 200mV) to (V+ + 200mV). |
| 5 | V+ | power_in | Positive supply terminal, operating from 2.7V to 5V single-supply as stated in the datasheet. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LKWIC |
| Package | SOT-23-5 |
| Category | Operational Amplifier/Comparator |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage |  | 2.7 |  | 5 | V |  | 4 |
| Propagation delay |  |  |  | 45 | ns | 电源电压 5V，电源电流 65μA | 4 |

## CAD (KiCad official)

- Symbol: `LKA1200ST`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `lka1200st-etched.step` / `lka1200st-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lka1200st.step` / `lka1200st.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LKWIC datasheet](docs/lka1200st-datasheet.pdf) (7 pp, sha256 `b580d77afa5fa5c5`, retrieved 2026-10-27, 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/lka1200st-datasheet.pdf)