2015年7月28日星期二

SK6812WWA LED

SK6812WWA LED

1. Product Overview :


SK6812WWA is a smart LED control circuit and light emitting circuit in one controlled LED source,
which has the shape of a 5050 LED chip. Each lighting element is a pixel, and the intensities of the
pixels are contained within the intelligent digital interface input. The output is driven by patented PWM
technology, which effectively guarantees high consistency of the color of the pixels. The control
circuit consists of a signal shaping amplification circuit, a built-in constant current circuit, and a high
precision RC oscillator.
The data protocol being used is unipolar NRZ communication mode. The 24-bit data is transmitted
from the controller to DIN of the first element, and if it is accepted it is extracted pixel to pixel. After an
internal data latch, the remaining data is passed through the internal amplification circuit and sent out
on the DO port to the remaining pixels. The pixel is reset after the end of DIN. Using automatic
shaping forwarding technology makes the number of cascaded pixels without signal transmission only
limited by signal transmission speed.
The LED has a low driving voltage (which allows for environmental protection and energy saving),
high brightness, scattering angle, good consistency, low power, and long life. The control circuit is
integrated in the LED above.
2. Main Application Field:
● Full color LED string light, LED full color module, LED super hard and soft lights, LED guardrail tube,
LED appearance / scene lighting
● LED point light, LED pixel screen, LED shaped screen, a variety of electronic products, electrical
equipment etc..
3. Description:
● Top SMD internal integrated high quality external control line serial cascade constant current IC;
● control circuit and the chip in SMD 5050 components, to form a complete control of pixel, color
mixing uniformity and consistency;
●built-in data shaping circuit, a pixel signal is received after wave shaping and output waveform
distortion will not guarantee a line;
●The built-in power on reset and reset circuit, the power does not work;
●gray level adjusting circuit (256 level gray scale adjustable);
● red drive special treatment, color balance;
● line data transmission;
● plastic forward strengthening technology, the transmission distance between two points over 10M;
●Using a typical data transmission frequency of 800 Kbps, when the refresh rate of 30 frames per sec


More details:














2015年7月25日星期六

sk6812wwa led strip

sk6812wwa led strip


 SK6812WWA is adapted sk6812 built-in IC for three white colors dimming leds,color chips is amber color with 1800K,warm white color chips and white color cct,with digital control ic to mix different white color,theoretically speaking the mixture white color is from 1800k to 6500k,
The controller system is the same as ws2812b,apa104 and sk6812 IC,

Amber color,warm white color and white color package in one smd




DC5V SK6812WWA DIGITAL WHITE COLOR LED Strip

60led 18w per meter.




It not only have amber color,warm white and white color,but also can mix lot of white color






Digital control to achieve different color,and indivial control

each led can mix any white color.






Waterproof rate:
IP20 non waterproof:3M sticker on the back, easy installation.
IP65 waterproof: Silcone gel or epoxy on the surface,3M sticker on the back.
IP67 waterproof: Silicone tube, equipped with card buckle and screw.
IP68 waterproof: Silicone gel or epoxy inside silicone tube,equipped with card buckle and screw.
It can be 30/60/72/144 for more choice.

2015年7月22日星期三

5050 ww+w smd le with double white color chips

5050 ww+w smd le with double white color chips

      5050 WW+W is a type of 5050 smd led which has two white color chips inside one smd,it is CCT dimmable smd led,each led chip with Max current is 20mA,so one smd led is 40mA ,for it is the two led chips packaged closer to each other so the better mixture color effect.







2015年7月21日星期二

ws2812 led smd chip black face

 ws2812 smd led black face leds

WS2812B is popular last two years,and most of us are using the white face ws2812b smd leds,
but sometimes we need some more choice for the black finish smd led,here are the new choice for you,it is the best chioce to match the black pcb for ws2812b led strips.



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 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..  
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 in a package of 5050 components. It internal include intelligent digital port data latch and signal reshaping amplification drive circuit. Also include a precision internal oscillator and a 12V voltage programmable constant curre-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 DIN  port 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 depend on the speed of signal transmission.
    LED with low driving voltage, environmental protection and energy saving, high brightness, scattering angle 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.

Mechanical Dimensions


PIN configuration 


PIN function
NO.
Symbol
Function description 
1
VDD
Power supply LED
2
DOUT
Control data signal output
3
VSS
Ground
4
DIN
Control data signal input

Absolute Maximum Ratings
Prameter
Symbol
Ratings
Unit
Power supply voltage
VDD
+3.5~+5.3
V
Input voltage
VI
-0.5~VDD+0.5
V
Operation junction temperature
Topt
-25~+80
Storage temperature range
Tstg
-55~+150
Electrical CharacteristicsTA=-20~+70℃,VDD=4.5~5.5V,VSS=0V,unless otherwise specified
Prameter
Smybol
conditions
Min
Tpy
Max
Unit
Input current
II
VI=VDD/VSS
——
——
±1
µA
Input voltage level
VIH
DIN,SET
0.7VDD
——
——
V
VIL
DIN,SET
——
——
0.3 VDD
V
Hysteresis voltage
VH
DIN,SET
——
0.35
——
V
Switching characteristicsTA=-20~+70℃,VDD=4.5~5.5V,VSS=0V,unless otherwise specified
Prameter
Symbol
Condition
Min
Tpy
Max
Unit
Operation frequency
Fosc2
——
——
800
——
KHz
Transmission delay time
tPLZ
CL=15pF,DIN→
DOUT,RL=10KΩ
——
——
300
ns
Fall time
tTHZ
CL=300pF,OUTR/OUTG/OUTB
——
——
120
µs
Data transmission rate
FMAX
Duty ratio50%
400
——
——
Kbps
Input capcity
CI
——
——
——
15
pF


LED characteristic parameter
Emitting color
Model
Wavelength(nm)
Luminous intensity(mcd)
Voltage(V)
Red
13CBAUP
620-625
390-420
2.0-2.2
Green
13CGAUP
522-525
660-720
3.0-3.4
Blue
10R1MUX
465-467
180-200
3.0-3.4
Data transfer timeTH+TL=1.25µs±600ns)
T0H
0 code ,high voltage time
0.4us
±150ns
T1H
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
±150ns
RES
low voltage time
Above 50µs







Data transmission method


Note: The data of D1 is send by MCU,and D2, D3, D4 through pixel internal reshaping amplification to transmit.
Composition of 24bit data:
G7
G6
G5
G4
G3
G2
G1
G0
R7
R6
R5
R4
R3
R2
R1
R0
B7
B6
B5
B4
B3
B2
B1
B0
Note: Follow the order of GRB to sent data and the high bit sent at first.

Typical application circuit: