component
WS2801S
Public Made by Adomby adom
Worldsemi LED Drivers, SOP-14. Datasheet-verified pinout, 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
markdownWS2801S
Worldsemi · LED Drivers · SOP-14
WS2801S from Worldsemi, in a SOP-14. 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 | CKI | input | Data clock input for the serial gray-scale interface. Maximum input clock frequency 25 MHz. VIH >= 0.8VDD, VIL <= 0.2VDD; input current ±1 uA max. |
| 2 | SDI | input | Serial gray-scale data input; clocked into the shift register on the rising edge of CKI. Input current ±1 uA max. |
| 3 | POL | input | Output polarity control. When POL is pulled to VCC the ROUT/GOUT/BOUT drive polarity is reversed; when floating or pulled high the polarity is not reversed. Internal pull-high ~30 kΩ; input current ±20 uA max. |
| 4 | RFB | passive | Red-channel current-set / feedback pin. An external resistor from RFB to GND sets the constant output current of the R channel (VXFB ≈ 0.6 V typical, IOUT = VXFB/RFB, e.g. 20 Ω → ~30 mA). |
| 5 | GFB | passive | Green-channel current-set / feedback pin. External resistor from GFB to GND sets the constant output current of the G channel (VXFB ≈ 0.6 V, same equation as RFB). |
| 6 | BFB | passive | Blue-channel current-set / feedback pin. External resistor from BFB to GND sets the constant output current of the B channel (VXFB ≈ 0.6 V, same equation as RFB). |
| 7 | GND | power_in | Device ground / 0 V reference for logic and output current sinks. |
| 8 | BOUT | output | Blue-channel constant-current LED output (open-drain sink). Rated 5-30 mA in constant-current mode (up to 50 mA in constant-voltage mode); absolute max VOUT 6 V. |
| 9 | GOUT | output | Green-channel constant-current LED output (open-drain sink). Rated 5-30 mA in constant-current mode (up to 50 mA in constant-voltage mode); absolute max VOUT 6 V. |
| 10 | ROUT | output | Red-channel constant-current LED output (open-drain sink). Rated 5-30 mA in constant-current mode (up to 50 mA in constant-voltage mode); absolute max VOUT 6 V. |
| 11 | NC | unconnected | No internal connection. Leave floating or tie to any convenient net. |
| 12 | SDO | output | Buffered serial gray-scale data output; feeds SDI of the next cascaded WS2801 in a chain. |
| 13 | CKO | output | Buffered clock output; feeds CKI of the next cascaded WS2801. CKI-to-CKO propagation delay ~8 ns @ VCC=5 V. |
| 14 | VCC | power_in | Positive supply input, 3.3-5.5 V (absolute max 6 V). A decoupling capacitor from VCC to GND is recommended to enhance noise immunity. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Worldsemi |
| Package | SOP-14 |
| Category | LED-drv |
| Pins | 14 |
Ordering variants
Same part, different packaging or reel option.
WS2801SS
CAD (KiCad official)
- Symbol:
WS2801S - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOP-14 (KiCad packages3D, STEP)
- 3D model files:
ws2801s-etched.step/ws2801s-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ws2801s.step/ws2801s.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Worldsemi datasheet (16 pp, sha256
9fd34332654e2bab, 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).