WS2811C

@@ -0,0 +1,43 @@+# WS2811C++**Worldsemi** · LED Drivers · SOP-8++WS2811C from Worldsemi, in a SOP-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 | OUTR | output | Constant-current PWM sink output for the RED LED channel. Low-side open-drain type driver rated up to 20 V withstand, typical IOL = 32 mA (30-36 mA). |+| 2 | OUTG | output | Constant-current PWM sink output for the GREEN LED channel. Low-side open-drain type driver rated up to 20 V withstand, typical IOL = 32 mA (30-36 mA). |+| 3 | OUTB | output | Constant-current PWM sink output for the BLUE LED channel. Low-side open-drain type driver rated up to 20 V withstand, typical IOL = 32 mA (30-36 mA). |+| 4 | GND | power_in | Common ground reference for data and power (VSS = 0 V). |+| 5 | DO | output | Reshaped single-wire cascade data output to the next driver's DIN. Drives >=10 mA at Vo=0.4 V; transmission delay <=300 ns (CL=15 pF, RL=10 kOhm). |+| 6 | DIN | input | Single-wire NZR control-data input from the upstream controller or previous cascade IC. Logic thresholds VIH >= 0.7*VDD, VIL <= 0.3*VDD, hysteresis ~0.35 V; withstand voltage 9.5 V. |+| 7 | NC | unconnected | No internal connection. Leave floating or tie to a copper pour as convenient; no functional purpose. |+| 8 | VDD | power_in | IC power supply, +3.5 V to +5.5 V operating (typ 5 V). When the LED rail is 12 V or 24 V a series dropper resistor is used with the internal Zener regulator to hold VDD in range. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Worldsemi |+| Package | SOP-8 |+| Category | LED-drv |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `WS2811C`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Worldsemi datasheet](docs/ws2811c-datasheet.pdf) (7 pp, sha256 `f35504c08de5d983`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/ws2811c-datasheet.pdf)

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