Data Sheet

ManualsBrandsSeeedStudio ManualsLightingDigital RGB LED Flexi-Strip 30 LED - 1 Meter

WS2812B

IntelligentcontrolLED

integratedlightsource

http://www.world-semi.com

FeaturesandBenefits

lIntelligentreverseconnectprotection,thepowersupplyreverseconnectiondoesnotdamagetheIC.

lThecontrolcircuitandtheLEDsharetheonlypowersource.

lControlcircuitandRGBchipareintegratedinapackageof5050components,formacompletecontrolofpixel

point.

lBuilt-insignalreshapingcircuit,afterwavereshapingtothenextdriver,ensurewave-formdistortionnot

accumulate.

lBuilt-inelectricresetcircuitandpowerlostresetcircuit.

lEachpixelofthethreeprimarycolorcanachieve256brightnessdisplay,completed16777216colorfullcolor

display,andscanfrequencynotlessthan400Hz/s.

lCascadingporttransmissionsignalbysingleline.

lAnytwopointthedistancemorethan5mtransmissionsignalwithoutanyincreasecircuit.

lWhentherefreshrateis30fps,cascadenumberarenotlessthan1024points.

lSenddataatspeedsof800Kbps.

lThecolorofthelightwerehighlyconsistent,cost-effective..

Applications

lFull-colormodule,Fullcolorsoftlightsalampstrip.

lLEDdecorativelighting,Indoor/outdoorLEDvideoirregularscreen.

Generaldescription

WS2812BisaintelligentcontrolLEDlightsourcethatthecontrolcircuitandRGBchipareintegratedin

apackageof5050components.Itinternalincludeintelligentdigitalportdatalatchandsignalreshapingampli

ficationdrivecircuit.Alsoincludeaprecisioninternaloscillatoranda12Vvoltageprogrammableconstantcurr

e-ntcontrolpart,effectivelyensuringthepixelpointlightcolorheightconsistent.

ThedatatransferprotocolusesingleNZRcommunicationmode.Afterthepixelpower-onreset,theDIN

portreceivedatafromcontroller,thefirstpixelcollectinitial24bitdatathensenttotheinternaldatalatch,

theotherdatawhichreshapingbytheinternalsignalreshapingamplificationcircuitsenttothenextcascade

pixelthroughtheDOport.Aftertransmissionforeachpixel，thesignaltoreduce24bit.pixeladoptautoresha

-pingtransmittechnology,makingthepixelcascadenumberisnotlimitedthesignaltransmission,onlydepend

onthespeedofsignaltransmission.

LEDwithlowdrivingvoltage,environmentalprotectionandenergysaving,highbrightness,scatteringangl

eislarge,goodconsistency,lowpower,longlifeandotheradvantages.ThecontrolchipintegratedinLED

abovebecomingmoresimplecircuit,smallvolume,convenientinstallation.

Summary of content (6 pages)

PAGE 1
WS2812B Intelligent control LED integrated light source Features and Benefits l Intelligent reverse connect protection, the power supply reverse connection does not damage the IC. l The control circuit and the LED share the only power source. l Control circuit and RGB chip are integrated in a package of 5050 components, form a complete control of pixel point. l Built-in signal reshaping circuit, after wave reshaping to the next driver, ensure wave-form distortion not accumulate.
PAGE 2
WS2812B Intelligent control LED integrated light source Mechanical Dimensions PIN configuration PIN function NO. Symbol Function description 1 VDD 2 DOUT 3 VSS Ground 4 DIN Control data signal input Power supply LED Control data signal output Absolute Maximum Ratings Prameter Symbol Ratings Unit Power supply voltage VDD +3.5~+5.3 V Input voltage VI -0.5～VDD+0.
PAGE 3
WS2812B Intelligent control LED integrated light source Prameter Smybol conditions Min Tpy Max Unit Input current II VI=VDD /VSS —— —— ±1 µA VIH DIN ，SET 0.7VDD —— —— V VIL DIN ，SET —— —— 0.3 VDD V VH DIN ，SET —— 0.35 —— V Input voltage level Hysteresis voltage Switching characteristics（TA=-20～+70℃，VDD=4.5～5.
PAGE 4
WS2812B Intelligent control LED integrated light source LED characteristic parameter Emitting color Model Wavelength(nm) Luminous intensity(mcd) Voltage(V) Red 13CBAUP 620-630 550-700 1.8-2.2 Green 13CGAUP 515-530 1100-1400 3.0-3.2 Blue 10R1MUX 465-475 200-400 3.0-3.4 Data transfer time( TH+TL=1.25µs±150ns) T0H 0 code ,high voltage time 0.35us ±150ns T1H 1 code ,high voltage time 0.9us ±150ns T0L 0 code , low voltage time 0.9us ±150ns T1L 1 code ,low voltage time 0.
PAGE 5
WS2812B Intelligent control LED integrated light source Data transmission method： reset code >=50us Data refresh cycle 1 first 2 4 b it D1 Data refresh cycle 2 seco n d 2 4 b it th ird 2 4 b it seco n d 2 4 b it D2 reset code first 2 4 b it th ird 2 4 b it seco n d 2 4 b it th ird 2 4 b it seco n d 2 4 b it th ird 2 4 b it th ird 2 4 b it D3 th ird 2 4 b it D4 Note: The data of D1 is send by MCU,and D2, D3, D4 through pixel internal reshaping amplification to transmit.
PAGE 6
WS2812B Intelligent control LED integrated light source Typical application circuit: U1 5V 1 C1 104 2 VDD DIN DOUT VSS 4 DIN 3 WS2812B U2 5V 1 C2 104 2 VDD DIN DOUT VSS 4 3 WS2812B U1 5V 1 C1 104 DOUT2 VDD DIN DOUT VSS WS2812B http://www.world-semi.