WS2812B
Intelligent control LED
integrated light source
Features and Benefits

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 notaccumulate.
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..

Applications
Full-color module, Full color soft lights a lamp strip.
LED decorative lighting, Indoor/outdoor LED video irregular screen.

General description
WS2812B is a intelligent control LED light source that the control circuit and RGB chip are integrated ina package of 5050 components. It internal include intelligent digital port data latch and signal reshaping ampli
fication drive circuit. Also include a precision internal oscillator and a 12V voltage programmable constant curr
e-nt control part, effectively ensuring the pixel point light color height consistent.
The data transfer protocol use single NZR communication mode. After the pixel power-on reset, the DINport receive data from controller, the first pixel collect initial 24bit data then sent to the internal data latch,the other data which reshaping by the internal signal reshaping amplification circuit sent to the next cascade
pixel through the DO port. After transmission for each pixel，the signal to reduce 24bit. pixel adopt auto resha-ping transmit technology, making the pixel cascade number is not limited the signal transmission, only dependon the speed of signal transmission.
LED with low driving voltage, environmental protection and energy saving, high brightness, scattering angl
e is large, good consistency, low power, long life and other advantages. The control chip integrated in LED
above becoming more simple circuit, small volume, convenient installation.

WS2812B
Intelligent control LED
integrated light source
Mechanical Dimensions

PIN configuration

PIN function
NO.

SymbolFunction description

1VDD

Power supply LED

2

DOUT

Control data signal output

3VSS

Ground4

DIN

Control data signal input

Absolute Maximum Ratings
PrameterSymbolRatings

Unit

Power supply voltage

VDD+3.5~+5.3

VInput voltage

VI-0.5～VDD+0.5

VOperation junction
temperatureTopt-25～+80℃

Storage temperature range

Tstg-40~+105℃

Electrical Characteristics（TA=-20～+70℃，VDD=4.5～5.5V,VSS=0V,unless otherwise specified）

WS2812B
Intelligent control LED
integrated light source
PrameterSmybolconditions

Min

Tpy

Max

Unit

Input current

II

VI=VDD/VSS

——

——

±1µA

VIH

DIN，SET

0.7VDD

——

——

V

VIL

DIN，SET————

0.3 VDDV

VH

DIN，SET

——

0.35

——

V

Input voltage level
Hysteresis voltage

Switching characteristics（TA=-20～+70℃，VDD=4.5～5.5V,VSS=0V,unless otherwise specified）Prameter

SymbolCondition

Min

Tpy

Max

Unit

Transmission delaytimetPLZ

CL=15pF,DIN→
DOUT,RL=10KΩ

——

——

300ns

Fall time

tTHZ

CL=300pF,OUTR/OU
TG/OUTB

——

——

120µs

Input capcity

CI

——

——

——

15pF

RGB IC characteristic parameter
Emitting color

Model

Wavelength(nm)Luminous intensity(mcd)

Voltage(V)Red

13CBAUP

620-625390-420

2.0-2.2

Green

13CGAUP522-525660-720

3.0-3.4

Blue

10R1MUX

465-467

180-200

3.0-3.4

Data transfer time( TH+TL=1.25µs±600ns)
T0H

0 code ,high voltage time0.4us±150nsT1H

1 code ,high voltage time

0.8us

±150ns

T0L

0 code , low voltage time

0.85us±150ns

T1L

1 code ,low voltage time

0.45us±150nsRES

low voltage time

Above 50µs

Sequence chart:WS2812B
Intelligent control LED
integrated light source
T0L

0 codeT0H
T1L

1 codeT1H
TresetRET code

Cascade method:D1

DIN DOD2

PIX1

DIN DO

PIX2

D3

D4
DIN DO

PIX3

Data transmission method：

reset code>=50usData refresh cycle 1
D1

D2

D3

D4

first 2 4 b itseco n d
th ird 2 4 b it
2 4 b itseco n d
2 4 b itth ird 2 4 b itth ird 2 4 b it

resetcode

Data refresh cycle 2
first 2 4 b itseco n d
2 4 b itth ird 2 4 b itseco n d
2 4 b itth ird 2 4 b itth ird 2 4 b it

WS2812B
Intelligent control LED
integrated light source

Note: The data of D1 is send by MCU,and D2, D3, D4 through pixel internal reshaping amplification totransmit.
Composition of 24bit data:
G7G6G5G4G3G2G1G0R7R6R5R4R3R2R1R0

Note: Follow the order of GRB to sent data and the high bit sent at first.
Typical application circuit:
U15V
1C1104

2VDD

DIN

DOUT

VSS4 DIN
3WS2812B

U25V
1C2104

2VDD

DIN

DOUT

VSS

43

WS2812B

U15V
1C1104

DOUT2VDD

DIN

DOUT

VSS

WS2812B

43B7B6B5B4B3B2B1B0