WS2812B
Intelligent control LED light sourceThe WS2812B is a intelligent control led light source from Worldsemi. View the full WS2812B datasheet below including key specifications, absolute maximum ratings.
Official WS2812B datasheet (PDF) — the source this page was extracted from.
WS2812B Key Specifications
| Parameter | Value |
|---|---|
| T0H | 0.4 μs ±150 ns |
| T0L | 0.85 μs ±150 ns |
| T1H | 0.8 μs ±150 ns |
| T1L | 0.45 μs ±150 ns |
| Data Rate | 800 kbps |
| Pin Count | 4 |
| Reset Time | >50 μs low |
| Color Depth | 256 levels per channel (24-bit, 16777216 colors) |
| Input Current | ±1 μA max |
| Input Voltage | -0.5V to VDD+0.5V |
| Red Wavelength | 620-625 nm |
| Scan Frequency | ≥400 Hz |
| Blue Wavelength | 465-467 nm |
| Cascade Capacity | ≥1024 pixels at 30 fps |
| Green Wavelength | 522-525 nm |
| Input Capacitance | 15 pF max |
| Bit Period (TH+TL) | 1.25 μs ±600 ns |
| Transmission Delay | 300 ns max |
| Storage Temperature | -40°C to +105°C |
| Supply Voltage (VDD) | 3.5V to 5.3V (absolute max); 4.5V to 5.5V (electrical characteristics conditions) |
| Input Low Level (VIL) | 0.3*VDD max |
| Operating Temperature | -25°C to +80°C |
| Input High Level (VIH) | 0.7*VDD min |
| Red Luminous Intensity | 390-420 mcd |
| Blue Luminous Intensity | 180-200 mcd |
| Communication Interface | Single-wire NZR (DIN/DOUT) |
| LED Forward Voltage (R) | 2.0-2.2 V |
| Green Luminous Intensity | 660-720 mcd |
| Input Hysteresis Voltage | 0.35V typ |
| LED Forward Voltage (G/B) | 3.0-3.4 V |
WS2812B Overview
Part: WS2812B
Type: Intelligent Control LED Integrated Light Source
Description: The WS2812B is an intelligent control LED light source integrating the control circuit and RGB chip in a 5050 package, offering 16.7 million colors with 256 brightness levels per color, a data transfer speed of 800Kbps, and a scan frequency of not less than 400Hz/s.
Operating Conditions:
- Supply voltage: 4.5–5.5 V
- Operating temperature: -20 to +70 °C
- Data transfer speed: 800Kbps
- Scan frequency: Not less than 400Hz/s
Absolute Maximum Ratings:
- Max supply voltage: +5.3 V
- Max junction/storage temperature: +105 °C
Key Specs:
- Input current (I_I): ±1 μA (max, V_I = V_DD/V_SS)
- Input voltage high level (V_IH): 0.7V_DD (min)
- Input voltage low level (V_IL): 0.3V_DD (max)
- Hysteresis voltage (V_H): 0.35 V (typ)
- Transmission delay time (t_PLZ): 300 ns (max, CL=15pF, DIN→DOUT, RL=10KΩ)
- Input capacity (C_I): 15 pF (max)
- Color depth: 256 brightness levels per primary color, 16,777,216 colors
- Data transfer time (TH+TL): 1.25μs ±600ns
Features:
- Intelligent reverse connect protection
- Control circuit and RGB chip integrated in a 5050 package
- Built-in signal reshaping circuit
- Built-in electric reset circuit and power lost reset circuit
- Cascading port transmission signal by single line
- Send data at speeds of 800Kbps
Applications:
- Full-color module, Full color soft lights a lamp strip
- LED decorative lighting
- Indoor/outdoor LED video irregular screen
Package:
- 5050 (4-pin)
WS2812B Features
- Intelligent reverse connect protection, the power supply reverse connection does not damage the IC.
- The control circuit and the LED share the only power source.
- Control circuit and RGB chip are integrated in a package of 5050 components, form a complete control of pixel point.
- Built-in signal reshaping circuit, after wave reshaping to the next driver, ensure wave-form distortion not accumulate.
- Built-in electric reset circuit and power lost reset circuit.
- Each pixel of the three primary color can achieve 256 brightness display, completed 16777216 color full color display, and scan frequency not less than 400Hz/s.
- Cascading port transmission signal by single line.
- Any two point the distance more than 5m transmission signal without any increase circuit.
- When the refresh rate is 30fps, cascade number are not less than1024 points.
- Send data at speeds of 800Kbps.
- The color of the light were highly consistent, cost-effective..
WS2812B Applications
- Full-color module, Full color soft lights a lamp strip.
- LED decorative lighting, Indoor/outdoor LED video irregular screen.
WS2812B Pin Configuration
| NO. | Symbol | Function description |
|---|---|---|
| 1 | VDD | Power supply LED |
| 2 | DOUT | Control data signal output |
| 3 | VSS | Ground |
| 4 | DIN | Control data signal input |
WS2812B Absolute Maximum Ratings
| Prameter | Symbol | Ratings | Unit |
|---|---|---|---|
| Power supply voltage | V DD | +3.5~+5.3 | V |
| Input voltage | V I | -0.5 ~ VDD+0.5 | V |
| Operation junction temperature | Topt | -25 ~ +80 | °C |
| Storage temperature range | Tstg | -40~+105 | °C |
Electrical Characteristics ( TA=-20 ~ +70 °C , VDD=4.5 ~ 5.5V,VSS=0V,unless otherwise specified )
Intelligent control LED integrated light source
Intelligent control LED integrated light source
| Prameter | Smybol | conditions | Min | Tpy | Max | Unit |
|---|---|---|---|---|---|---|
| Input current | I I | V I =V DD /V SS | -- | -- | ±1 | μA |
| Input voltage level | V IH | D IN , SET | 0.7V DD | -- | -- | V |
| Input voltage level | V IL | D IN , SET | -- | -- | 0.3V DD | V |
| Hysteresis voltage | V H | D IN , SET | -- | 0.35 | -- | V |
Switching characteristics ( TA=-20 ~ +70 °C , VDD=4.5 ~ 5.5V,VSS=0V,unless otherwise specified )
| Prameter | Symbol | Condition | Min | Tpy | Max | Unit |
|---|---|---|---|---|---|---|
| Transmission delay time | t PLZ | CL=15pF,DIN→ DOUT,RL=10KΩ | -- | -- | 300 | ns |
| Fall time | t THZ | CL=300pF,OUTR/OU TG/OUTB | -- | -- | 120 | μs |
| Input capcity | C I | -- | -- | -- | 15 | pF |
WS2812B Typical Application
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