Overview
- release year
- 2011
- other links
- WS2811 Pixel Protocol Overview | Advatek Lighting
- price
- $0.042$0.028$0.021
Data & Protocol
Color & Brightness
- channel bits
- 8
- aggregate bits
- 24
- pwm frequency
- 2.0kHz
- pwm frequency notes
- 400Hz was old spec. Newer WS2811 chips have 2kHz PWM like WS2812B post-2018
Electrical
- output voltage
- 12V
- output voltage notes
- Vds max - can drive LEDs at various voltages up to 12V via constant current
- supply voltage
- 5V
- supply voltage notes
- VCC range 4.5-5.5V
- gpio
- min
- 3.0V
- max
- 5V
- notes
- 0.6*VDD at 5V supply
- max current
- 19mA
- max current notes
- Constant current driver, actual current set by external resistor
- current programmable
- Yes
- current range
- 3-60mA typical depending on Rext
- quiescent current
- 0.7mA
Datasheet
Physical
- package size
- SOIC8/DIP8
- pin count
- 8
Related Products
- Related
- Variants
Used by Drive Libraries
Notes
Addressable in groups (usually of 3 LEDs), common on 3 wire pixels, pucks, floods
Technical Notes
- Standalone IC, not integrated with LEDs like WS2812
- Commonly used for 12V pixels with 3 LEDs in series
- External resistor sets output current
- PWM updated from 400Hz to 2kHz in newer silicon revisions
- Widely cloned - many compatible ICs available