WS2811 SOIC-8 LED driver IC; drives one common-anode RGB LED or three individual LEDs at ~18mA constant current per channel (NPN outputs — incompatible with common-cathode). Chainable via single data line using a timing-sensitive protocol requiring a real-time microcontroller.
Pin 1, red-channel constant-current PWM output. WS2811 datasheet lists OUTR as output of Red PWM control.
Pin 2, green-channel constant-current PWM output. WS2811 datasheet lists OUTG as output of Green PWM control.
Pin 3, blue-channel constant-current PWM output. WS2811 datasheet lists OUTB as output of Blue PWM control.
Pin 4, ground reference.
Pin 5, reshaped cascade data output to the next WS2811 device.
Pin 6, single-line control data input from the controller.
Pin 7, speed-mode select. Datasheet states low-speed mode when connected to VDD, high-speed mode when left vacant.
Pin 8, power supply voltage for the WS2811 logic/core.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| OUTR | 1 | output | Pin 1, red-channel constant-current PWM output. WS2811 datasheet lists OUTR as output of Red PWM control. | Output voltage rating up to 12 V per WS2811 datasheet absolute maximum ratings. |
| OUTG | 2 | output | Pin 2, green-channel constant-current PWM output. WS2811 datasheet lists OUTG as output of Green PWM control. | Output voltage rating up to 12 V per WS2811 datasheet absolute maximum ratings. |
| OUTB | 3 | output | Pin 3, blue-channel constant-current PWM output. WS2811 datasheet lists OUTB as output of Blue PWM control. | Output voltage rating up to 12 V per WS2811 datasheet absolute maximum ratings. |
| GND | 4 | ground | Pin 4, ground reference. | VSS / 0 V reference. |
| DOUT | 5 | signal | Pin 5, reshaped cascade data output to the next WS2811 device. | Logic output referenced to VDD; datasheet input voltage maximum is VDD + 0.5 V. |
| DIN | 6 | signal | Pin 6, single-line control data input from the controller. | Logic input referenced to VDD; datasheet input voltage maximum is VDD + 0.5 V. |
| SET | 7 | configuration | Pin 7, speed-mode select. Datasheet states low-speed mode when connected to VDD, high-speed mode when left vacant. | Connect to VDD for low-speed mode, or leave vacant for high-speed mode, per datasheet. |
| VDD | 8 | power | Pin 8, power supply voltage for the WS2811 logic/core. | Electrical characteristics specify VDD 4.5 V to 5.5 V; absolute maximum table lists power supply voltage +6.0 to +7.0 V. |
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