{"id":223055,"date":"2011-11-28T23:00:00","date_gmt":"2011-11-28T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/regulateur-dc-dc-36v-4a-abaisseur-synchrone\/"},"modified":"2011-11-28T23:00:00","modified_gmt":"2011-11-28T23:00:00","slug":"regulateur-dc-dc-36v-4a-abaisseur-synchrone","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/regulateur-dc-dc-36v-4a-abaisseur-synchrone\/","title":{"rendered":"R\u00e9gulateur DC\/DC, 36V, 4A, abaisseur, synchrone"},"content":{"rendered":"<p>Le LT3690 fonctionne &agrave; partir d&rsquo;une gamme de tensions d&rsquo;entr&eacute;e, de 3,9V &agrave; 36V, et poss&egrave;de une protection contre les surtensions de 60V, ce qui le rend id&eacute;al dans les conditions de rupture de charge et de d&eacute;marrage &agrave; froid que l&rsquo;on rencontre dans les applications de l&rsquo;automobile. Le fonctionnement en Burst Mode du LT3690 n&eacute;cessite un&nbsp; courant de repos de seulement 70&micro;A, id&eacute;al dans les syst&egrave;mes comme ceux de l&rsquo;automobile et des t&eacute;l&eacute;communications qui requi&egrave;rent un fonctionnement ininterrompu et une autonomie des batteries optimum. La fr&eacute;quence de commutation est programmable par l&rsquo;utilisateur, de 170kHz &agrave; 1,5MHz, permettant au concepteur d&rsquo;optimiser le rendement tout en &eacute;vitant les bandes de fr&eacute;quences critiques, sensibles au bruit. La combinaison du bo&icirc;tier QFN-26, 4mm x 6mm, et de la fr&eacute;quence de commutation &eacute;lev&eacute;e autorise des condensateurs et des inductances externes de petite taille, ce qui conduit &agrave; un produit d&#8217;empreinte compacte, de bon rendement thermique. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br \/>\nLa version de classe H fonctionne avec une temp&eacute;rature de jonction de -40&deg;C &agrave; 150&deg;C et est garantie et test&eacute;e sur cette gamme de temp&eacute;ratures. De m&ecirc;me, la version de classe MP fonctionne avec une temp&eacute;rature de jonction de -55&deg;C &agrave; 150&deg;C, avec tests et garantie sur cette gamme de temp&eacute;ratures. Les sp&eacute;cifications &eacute;lectriques pour les classes H et MP sont identiques &agrave; celles des classes E et I. Elles sont id&eacute;ales pour les applications de l&rsquo;automobile, industrielle et militaire, qui sont soumises &agrave; de fortes temp&eacute;ratures.<br \/>\nLe LT3690HUFE et le LT3690MPUFE sont tous les deux disponibles en bo&icirc;tiers QFN de 26 broches, 4mm x 6mm.<\/p>\n<p><a href=\"http:\/\/www.linear.com\/3690\">www.linear.com\/3690<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linear Technology annonce les versions haute temp\u00e9rature (classe \u00a0\u00bb H \u00ab\u00a0) et grande fiabilit\u00e9 (classe \u00a0\u00bb MP \u00ab\u00a0) du LT3690. Ce r\u00e9gulateur \u00e0 d\u00e9coupage, abaisseur, synchrone, \u00e0 tension d&rsquo;entr\u00e9e de 36V, peut fournir en sortie un courant continu de 4A, avec des rendements pouvant atteindre 93%.<\/p>\n","protected":false},"author":22,"featured_media":223056,"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-223055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>R\u00e9gulateur DC\/DC, 36V, 4A, abaisseur, synchrone ...<\/title>\n<meta name=\"description\" content=\"Linear Technology annonce les versions haute temp\u00e9rature (classe &quot; H &quot;) et grande fiabilit\u00e9 (classe &quot; MP &quot;) du LT3690. 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