# WS72552M-8

**WILLSEMI Will Semicon** · Operational Amplifier · MSOP-8

WS72552M-8 from WILLSEMI Will Semicon, in a MSOP-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 | OUTA | output | Output of amplifier A. |
| 2 | -INA | input | Inverting input of amplifier A. |
| 3 | +INA | input | Non-inverting input of amplifier A; input voltage must stay between GND-0.2 V and Vs+0.2 V per the absolute maximum ratings. |
| 4 | V- | power_in | Negative supply rail, which is GND in single-supply operation from 2.5 V to 5 V. |
| 5 | +INB | input | Non-inverting input of amplifier B; input voltage must stay between GND-0.2 V and Vs+0.2 V per the absolute maximum ratings. |
| 6 | -INB | input | Inverting input of amplifier B. |
| 7 | OUTB | output | Output of amplifier B. |
| 8 | V+ | power_in | Positive supply; the part is guaranteed for 2.5 V to 5 V single-supply operation and the absolute maximum supply voltage is 6 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | WILLSEMI Will Semicon |
| Package | MSOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `WS72552M-8`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `ws72552m-8-etched.step` / `ws72552m-8-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ws72552m-8.step` / `ws72552m-8.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [WILLSEMI Will Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588917789042626560) (18 pp, sha256 `627c731db97a1142`, retrieved 2026-10-10, 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/ws72552m-8-datasheet.pdf)