{"id":221955,"date":"2011-06-30T22:00:00","date_gmt":"2011-06-30T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/driver-de-led-de-retro-eclairage-pour-ecrans-de-tailles-moyennes-a-grandes\/"},"modified":"2011-06-30T22:00:00","modified_gmt":"2011-06-30T22:00:00","slug":"driver-de-led-de-retro-eclairage-pour-ecrans-de-tailles-moyennes-a-grandes","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/driver-de-led-de-retro-eclairage-pour-ecrans-de-tailles-moyennes-a-grandes\/","title":{"rendered":"Driver de LED de r\u00e9tro-\u00e9clairage pour \u00e9crans de tailles moyennes \u00e0 grandes"},"content":{"rendered":"<p>Le convertisseur boost fonctionne &agrave; fr&eacute;quence constante (programmable) en mode de contr&ocirc;le du courant. Le courant maximum g&eacute;n&eacute;r&eacute; pour les LEDs peut &ecirc;tre d&eacute;fini par une r&eacute;sistance externe et un dimming par PWM permet de contr&ocirc;ler le courant dans les LEDs. Le A8516 incorpore des protections contre les surtensions, contre les courts-circuits et les circuits ouverts des branches de LEDs. Une fonction de limitation du courant &agrave; deux niveaux permet des d&eacute;marrages doux et une protection contre les surcharges.<br \/>\nLe A8516 est propos&eacute; dans un bo&icirc;tier TSSOP 24 broches (LP) ou dans un bo&icirc;tier SOICW 24 broches avec des broches reli&eacute;es en interne pour am&eacute;liorer la dissipation thermique. Ces deux bo&icirc;tiers ont une semelle permettant d&rsquo;am&eacute;liorer la dissipation thermique. Ils sont sans plomb avec un &eacute;tamage du leadframe 100% &eacute;tain mat.<br \/>\n<a target=\"_blank\" href=\"\/0%20archives%20PR%20d'origine%20codifi\u00e9s%20ECI\/redir.aspx?C=992ecd4dbc5746e9b90b98241c5e5211&amp;URL=http%3a%2f%2fwww.allegromicro.com%2fen%2fProducts%2fPart_Numbers%2f8516%2f8516.pdf\" rel=\"noopener\">www.allegromicro.com\/en\/Products\/Part_Numbers\/8516\/8516.pdf<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Allegro Microsystems Europe introduit un driver de LEDs blanches\/RGB pour le r\u00e9tro-\u00e9clairage des \u00e9crans LCD et de t\u00e9l\u00e9vision. Le A8516 est un driver de LEDs multi-applications \u00e9conomique qui permet aux concepteurs de r\u00e9duire le nombre de composants et le co\u00fbt global du syst\u00e8me. Ce composant int\u00e8gre un contr\u00f4leur boost pour piloter un MOSFET externe et six g\u00e9n\u00e9rateurs de courant interne capables de fournir chacun 80mA. Les sorties peuvent \u00eatre reli\u00e9es pour fournir plus de courant.<\/p>\n","protected":false},"author":22,"featured_media":221956,"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-221955","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Driver de LED de r\u00e9tro-\u00e9clairage pour \u00e9crans de tailles moye...<\/title>\n<meta name=\"description\" content=\"Allegro Microsystems Europe introduit un driver de LEDs blanches\/RGB pour le r\u00e9tro-\u00e9clairage des \u00e9crans LCD et de t\u00e9l\u00e9vision. Le A8516 est un driver de...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/221955\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Driver de LED de r\u00e9tro-\u00e9clairage pour \u00e9crans de tailles moyennes \u00e0 grandes\" \/>\n<meta property=\"og:description\" content=\"Allegro Microsystems Europe introduit un driver de LEDs blanches\/RGB pour le r\u00e9tro-\u00e9clairage des \u00e9crans LCD et de t\u00e9l\u00e9vision. Le A8516 est un driver de LEDs multi-applications \u00e9conomique qui permet aux concepteurs de r\u00e9duire le nombre de composants et le co\u00fbt global du syst\u00e8me. Ce composant int\u00e8gre un contr\u00f4leur boost pour piloter un MOSFET externe et six g\u00e9n\u00e9rateurs de courant interne capables de fournir chacun 80mA. 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