# WS2811S

**Worldsemi** · LED Drivers · SOP-8

WS2811S from Worldsemi, 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 | OUTR | output | Red channel constant-current PWM LED driver output, with a withstand voltage of 7 V. |
| 2 | OUTG | output | Green channel constant-current PWM LED driver output, with a withstand voltage of 7 V. |
| 3 | OUTB | output | Blue channel constant-current PWM LED driver output, with a withstand voltage of 7 V. |
| 4 | GND | power_in | Signal ground and power ground for the device. |
| 5 | DO | output | Serial data cascade output that retransmits the reshaped DIN data to the next cascaded device. |
| 6 | DIN | input | Serial data input; logic high requires at least 0.7 VDD and logic low must be at most 0.3 VDD. |
| 7 | NC | unconnected | Empty pin; leave floating (not connected). |
| 8 | VDD | power_in | Logic supply; maximum ratings are 3.5 V to 5.5 V, and electrical characteristics are specified for 4.5 V to 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Worldsemi |
| Package | SOP-8 |
| Category | LED Drivers |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `WS2811S`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `ws2811s-etched.step` / `ws2811s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ws2811s.step` / `ws2811s.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Worldsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603349097982009344) (6 pp, sha256 `966ec0264416561e`, retrieved 2026-10-19, 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/ws2811s-datasheet.pdf)