{"id":225770,"date":"2012-12-03T23:00:00","date_gmt":"2012-12-03T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/pilote-de-led-45v-23a\/"},"modified":"2012-12-03T23:00:00","modified_gmt":"2012-12-03T23:00:00","slug":"pilote-de-led-45v-23a","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/pilote-de-led-45v-23a\/","title":{"rendered":"Pilote de LED, 45V, 2,3A"},"content":{"rendered":"

Le LT3518 peut piloter jusqu’à huit LED blanches de 300 mA avec une tension d’entrée nominale de 12V, ce qui le rend idéal pour les applications comme le rétro-éclairage des écrans dans l’automobile. Le LT3518 utilise une détection de courant de sortie, côté chaud de la LED, ce qui permet des configurations en modes abaisseur, abaisseur-élévateur et élévateur. Il peut fournir des rendements pouvant atteindre 90% en mode élévateur, dans un petit boîtier QFN 4mm x 4mm. Le LT3518 possède un réglage de la luminosité True Color PWM, permettant de générer une couleur de LED constante, avec un rapport de gradation de luminosité de 3000 à 1. Pour des demandes moindre quant au réglage de luminosité, on peut utiliser la broche de contrôle CTRL pour un rapport de gradation de luminosité de 10 à 1. Son architecture à fréquence fixe et à mode courant assure un fonctionnement stable sur une large gamme d’alimentations et de tensions de sortie. Une broche destinée au réglage de la fréquence permet à l’utilisateur de programmer la fréquence, entre 250kHz et 2,5MHz, afin d’optimiser le rendement tout en diminuant la taille des composants extérieurs. <\/p>\n

www.linear.com\/product\/LT3518<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Linear Technology annonce la version de classe H du LT3518. Le LT3518 est un convertisseur DC\/DC, 45V, \u00e0 d\u00e9tection de courant c\u00f4t\u00e9 chaud, con\u00e7u pour fonctionner en tant que pilote de LED, de forte intensit\u00e9, \u00e0 courant constant. Sa gamme de tensions d’entr\u00e9e, de 3V \u00e0 30V, avec protection contre les transitoires jusqu’\u00e0 40V, rend le LT3518 id\u00e9al pour une grande vari\u00e9t\u00e9 d’applications incluant l’automobile, l’\u00e9clairage industriel et architectural.<\/p>\n","protected":false},"author":22,"featured_media":225771,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-225770","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"Pilote de LED, 45V, 2,3A ...<\/title>\n<meta name=\"description\" content=\"Linear Technology annonce la version de classe H du LT3518. 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