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)

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).

Datasheet PDF