Diodes Inc. ikufuna kuti chowongolera chatsopanocho chikhale choyenera kugwiritsa ntchito pomwe ma voliyumu osasunthika kapena magetsi osasunthika amafunikira kuyendetsa zowonetsera ndi nyali zakumbuyo.Kumbali ya LCD, izi zitha kuphatikiza kugwiritsa ntchito ngati dalaivala wowunikira kumbuyo kwa ma TV a LCD, zowunikira za LCD, ndi zowonetsera zowonekera.Kumbali ya LED, izi zitha kutanthauza kugwiritsa ntchito ngati dalaivala wa LED pazowunikira zamalonda.
Chipangizochi chimakhala ndi ma voltages olowera kuyambira 9V mpaka 40V.Izi zimalola kuti zigwirizane mosavuta ndi ma voltages osiyanasiyana omwe amapezeka, monga 12V, 24V, ndi 36V, popanda kukonzanso kwina kapena kutaya mphamvu.
Dimming level imayang'aniridwa ndi kulowetsa kwa digito PWM (pulse wide modulation), yomwe imasinthidwa kukhala voteji ya analogi kuti ilamulire dimming kwenikweni.AL3353 imatha kuthandizira ma sign a PWM okhala ndi ma frequency kuyambira 5kHz mpaka 50kHz.
Kuphatikiza apo, AL3353 imasunga mzere pakutentha ndi kusintha kwamachitidwe.Izi zimatheka pogwiritsa ntchito njira yolipirira ya Diodes' dynamic linearity compensation, yomwe imagwiritsa ntchito chigawo chodula chochotsa.
AL3353 ili ndi dalaivala wa PWM wolimbikitsira yemwe amagwiritsa ntchito kuwongolera kwamakono komanso magwiridwe antchito okhazikika kuti aziwongolera ma LED apano.Mphamvu yamagetsi ya LED imadutsa chopinga chakunja chamakono.Mpweya wodutsa pazitsulo zomverera umafaniziridwa ndi mlingo wa 400mV.Kusiyanitsa pakati pa ma voltages awiriwa kumagwiritsidwa ntchito kuwongolera kuchuluka kwa mphamvu yosinthira mphamvu, ndikulola kuwongolera komwe kukuyenda kudzera mu LED.
AL3353 itha kugwiritsidwanso ntchito pamikhalidwe yomwe imafuna kuwongolera kwamagetsi, m'malo mowongolera zomwe zikuchitika.Imatero popanga miyeso ndi netiweki yotsutsa mayankho yolumikizidwa ndi cholumikizira cha chipangizocho.
Kuti adziteteze komanso ma LED omwe amawawongolera, AL3353 imaphatikizapo zinthu zina zofunika zachitetezo.Izi zikuphatikizapo:
AL3353 imatha kulowa m'malo mwazinthu zambiri ndipo imatha kuchepetsa mtengo wa BOM, komanso kuchepetsa malo a board ndi kukula kwake kochepa:
Poganizira zofunikira za gawoli, ndizosadabwitsa kuti pali ena omwe alowa nawo gawoli.Ndipo, pomwe AL3353 imapereka kutulutsa kumodzi, opanga ena amapereka magawo okhala ndi zotulutsa zinayi.Nawa ochepa:
Nthawi yotumiza: May-29-2019