component
WS2811
Public Made by Adomby adom
Worldsemi LED Drivers, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownWS2811
Worldsemi · LED Drivers · SOP-8
WS2811 from Worldsemi, in a SOP-8. Pinout and pin descriptions extracted from the datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUTR | output | RED channel constant-current PWM sink output. 20V max port voltage, typical sink current 16 mA (14-18 mA range) at DC=5V with DIN=FFh. Drives LED cathode(s) with series ballast resistor Rd sized to supply voltage. |
| 2 | OUTG | output | GREEN channel constant-current PWM sink output. 20V max port voltage, typical sink current 16 mA. Delayed turn-on relative to other channels to reduce supply ripple at frame refresh. |
| 3 | OUTB | output | BLUE channel constant-current PWM sink output. 20V max port voltage, typical sink current 16 mA. 256-level PWM at 4 kHz scan frequency. |
| 4 | GND | power_in | Ground reference for both signal and power. VSS = 0V. |
| 5 | DO | output | Cascade data output. Reshaped/retimed forward of remaining bits after this IC consumes its first 24 bits. Drives next stage's DIN. Low-level output current >=10 mA at Vo=0.4V; propagation delay tPLZ <=300 ns (CL=15pF, RL=10kΩ). Withstands transient 24V short without damage. |
| 6 | DIN | input | Single-wire serial data input (NRZ, 800 kbps). VIH >= 0.55*VDD, VIL <= 0.3*VDD, hysteresis ~0.35V. First 24 bits (R7..R0, G7..G0, B7..B0, MSB first) are latched by this IC; remaining bits are forwarded through DO. RESET frame is low >=280 µs. Port withstands 9.5V and transient 24V short. |
| 7 | NC | unconnected | No internal connection. Leave floating or tie to any potential per PCB layout convenience. |
| 8 | VDD | power_in | Logic supply for the IC. Operating range +3.5 to +5.7 V (absolute max), typical 4.5-5.5V. Quiescent current ~0.3 mA. On-chip shunt regulator allows operation from supplies up to 24V via an external series dropping resistor (Rd = 150Ω @5V, 4.7kΩ @12V, 10kΩ @24V) with a 1 µF decoupling capacitor to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Worldsemi |
| Package | SOP-8 |
| Category | LED-drv |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
WS2811 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
ws2811-etched.step/ws2811-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ws2811.step/ws2811.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Worldsemi datasheet (8 pp, sha256
18c5e95266753d5c, 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).