{"id":226676,"date":"2013-03-25T23:00:00","date_gmt":"2013-03-25T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/pompe-de-charges-en-mode-abaisseur-elevateur-forte-tension-faible-niveau-de-bruit\/"},"modified":"2013-03-25T23:00:00","modified_gmt":"2013-03-25T23:00:00","slug":"pompe-de-charges-en-mode-abaisseur-elevateur-forte-tension-faible-niveau-de-bruit","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/pompe-de-charges-en-mode-abaisseur-elevateur-forte-tension-faible-niveau-de-bruit\/","title":{"rendered":"Pompe de charges en mode abaisseur-\u00e9l\u00e9vateur, forte tension, faible niveau de bruit"},"content":{"rendered":"<p>La faible consommation de fonctionnement de 18 &micro;A sans charge et 4 &micro;A &agrave; l&rsquo;arr&ecirc;t ainsi que le petit nombre de composants externes, r&eacute;duit &agrave; trois petits condensateurs &agrave; di&eacute;lectrique c&eacute;ramique et sans inductance, rendent ce circuit bien adapt&eacute; aux applications de l&rsquo;automobile, industrielles &agrave; espace minime, de faible puissance, comme les alimentations d&rsquo;&eacute;metteur-r&eacute;cepteur ECU\/CAN pour l&rsquo;automobile, les alimentations de gestion domestique, pour l&rsquo;industrie et la conversion efficace de faible puissance de 12 V en 5 V.<br \/>\nL&rsquo;architecture unique &agrave; fr&eacute;quence constante de ce circuit, avec des vitesses de commutations r&eacute;duites, g&eacute;n&egrave;re des niveaux de bruits de conduction et de rayonnement moindres que ceux des r&eacute;gulateurs &agrave; d&eacute;coupage conventionnels. Le composant poss&egrave;de une broche pour s&eacute;lectionner le fonctionnement en Burst Mode qui autorise l&rsquo;utilisateur &agrave; choisir une ondulation de sortie plus faible pour un meilleur rendement et un courant de repos plus faible. Les autres caract&eacute;ristiques du circuit int&eacute;gr&eacute; incluent un petit nombre de composants externes, la stabilit&eacute; avec des condensateurs &agrave; di&eacute;lectrique c&eacute;ramique, un circuit de d&eacute;marrage progressif pour emp&ecirc;cher les courants d&rsquo;appel excessifs au moment de la mise sous tension, une protection contre les courts-circuits et une protection thermique.<br \/>\nCe composant est encapsul&eacute; en bo&icirc;tiers DFN 12 broches de 3 x 4 mm, &agrave; faible profil de 0,75 mm, et MSOP 12 broches, tous deux &eacute;quip&eacute;s d&rsquo;une semelle thermique. Les classes E et I fonctionnent sur la gamme de temp&eacute;ratures de jonction de -40 &deg;C &agrave; +125 &deg;C, la classe H de -40 &deg;C &agrave; +150 &deg;C.<\/p>\n<\/p>\n<p><a title=\"www.linear.com\/product\/LTC3245\" target=\"_blank\" href=\"http:\/\/www.linear.com\/product\/ltc3245\" rel=\"noopener\">www.linear.com\/product\/LTC3245<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>D\u2019un usage multiple, la pompe de charges en mode abaisseur-\u00e9l\u00e9vateur, 250 mA et forte tension LTC3245 de Linear Technology utilise une conversion fractionnaire pour maintenir la r\u00e9gulation sur la large gamme de la tension d\u2019entr\u00e9e de 2,7 V \u00e0 38 V et g\u00e9n\u00e9rer une tension de sortie r\u00e9gul\u00e9e de 3,3 V, 5 V ou r\u00e9glable de 2,5 V \u00e0 5 V. Les circuits internes s\u00e9lectionnent imm\u00e9diatement le rapport de conversion 1:2, 1:1 ou 2:1 pour optimiser le rendement, en fonction des variations de la tension d\u2019entr\u00e9e et de la charge. <\/p>\n","protected":false},"author":22,"featured_media":226677,"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-226676","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Pompe de charges en mode abaisseur-\u00e9l\u00e9vateur, forte tension, ...<\/title>\n<meta name=\"description\" content=\"D\u2019un usage multiple, la pompe de charges en mode abaisseur-\u00e9l\u00e9vateur, 250 mA et forte tension LTC3245 de Linear Technology utilise une conversion...\" \/>\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\/226676\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pompe de charges en mode abaisseur-\u00e9l\u00e9vateur, forte tension, faible niveau de bruit\" \/>\n<meta property=\"og:description\" content=\"D\u2019un usage multiple, la pompe de charges en mode abaisseur-\u00e9l\u00e9vateur, 250 mA et forte tension LTC3245 de Linear Technology utilise une conversion fractionnaire pour maintenir la r\u00e9gulation sur la large gamme de la tension d\u2019entr\u00e9e de 2,7 V \u00e0 38 V et g\u00e9n\u00e9rer une tension de sortie r\u00e9gul\u00e9e de 3,3 V, 5 V ou r\u00e9glable de 2,5 V \u00e0 5 V. 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