{"id":221036,"date":"2011-02-17T23:00:00","date_gmt":"2011-02-17T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/regulateur-abaisseur-tres-faible-consommation-entree-36-v-deux-sorties-800-ma\/"},"modified":"2011-02-17T23:00:00","modified_gmt":"2011-02-17T23:00:00","slug":"regulateur-abaisseur-tres-faible-consommation-entree-36-v-deux-sorties-800-ma","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/regulateur-abaisseur-tres-faible-consommation-entree-36-v-deux-sorties-800-ma\/","title":{"rendered":"R\u00e9gulateur, abaisseur, tr\u00e8s faible consommation, entr\u00e9e 36 V, deux sorties 800 mA"},"content":{"rendered":"<p>Le fonctionnement en Burst Mode du LT3688 pr&eacute;sente un&nbsp; courant de repos de seulement 115 &micro;A, qui convient aux syst&egrave;mes de l&rsquo;automobile et des t&eacute;l&eacute;communications requ&eacute;rant un fonctionnement ininterrompu et une autonomie des batteries optimum. La fr&eacute;quence de commutation est programmable par l&rsquo;utilisateur, de 350 kHz &agrave; 2,2&nbsp;MHz, permettant au concepteur d&rsquo;optimiser le rendement tout en &eacute;vitant les bandes de fr&eacute;quences critiques, sensibles au bruit. Le bo&icirc;tier QFN-24 (ou TSSOP-24, &agrave; performances thermiques renforc&eacute;es), 4 mm x 4 mm, et la fr&eacute;quence de commutation &eacute;lev&eacute;e du LT3688 autorisent des condensateurs et des inductances externes de petite taille, ce qui conduit &agrave; un produit d&#8217;empreinte tr&egrave;s compacte et de bon rendement thermique. Les fonctions de superviseur du microprocesseur int&eacute;gr&eacute; autorisent des applications de grande fiabilit&eacute; comme les unit&eacute;s de contr&ocirc;le &eacute;lectronique pour l&rsquo;automobile. Les dur&eacute;es de r&eacute;initialisation et de temps morts du chien de garde sont r&eacute;glables s&eacute;par&eacute;ment par des condensateurs externes. Les caract&eacute;ristiques de grande pr&eacute;cision et l&rsquo;immunit&eacute; aux impulsions sporadiques assurent une r&eacute;initialisation fiable d&rsquo;un syst&egrave;me, sans erreur de d&eacute;clenchement. La broche \/RST,&nbsp;&agrave; collecteur ouvert, pr&eacute;sente l&rsquo;&eacute;tat bas&nbsp;lorsque la tension de sortie tombe au-dessous de 10% de la valeur programm&eacute;e. La minuterie du chien de garde g&egrave;re les &eacute;carts entre les fronts descendants trop proches ou trop &eacute;loign&eacute;s. <\/p>\n<p><a href=\"\/\/www.linear.com\/3688\">www.linear.com\/3688<\/a> .<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linear Technology annonce\u00a0 le LT3688, un r\u00e9gulateur \u00e0 d\u00e9coupage, abaisseur, sortie double 800 mA, 36 V en entr\u00e9e, avec deux minuteries de r\u00e9initialisation \u00e0 la mise en marche et une minuterie de chien de garde. La gamme de tension d&rsquo;entr\u00e9e, de 3,8 V \u00e0 36 V, \u00a0rend ce circuit id\u00e9al dans les conditions de rupture de charge et de d\u00e9marrage \u00e0 froid que l&rsquo;on rencontre commun\u00e9ment dans les applications de l&rsquo;automobile. Ses deux commutateurs internes de 1,2 A peuvent fournir un courant continu de sortie jusqu&rsquo;\u00e0 800 mA sur chaque canal, sous des tensions aussi basses que 0,8 V.<\/p>\n","protected":false},"author":22,"featured_media":221037,"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-221036","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>R\u00e9gulateur, abaisseur, tr\u00e8s faible consommation, entr\u00e9e 36 V...<\/title>\n<meta name=\"description\" content=\"Linear Technology annonce\u00a0 le LT3688, un r\u00e9gulateur \u00e0 d\u00e9coupage, abaisseur, sortie double 800 mA, 36 V en entr\u00e9e, avec deux minuteries 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\/221036\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R\u00e9gulateur, abaisseur, tr\u00e8s faible consommation, entr\u00e9e 36 V, deux sorties 800 mA\" \/>\n<meta property=\"og:description\" content=\"Linear Technology annonce\u00a0 le LT3688, un r\u00e9gulateur \u00e0 d\u00e9coupage, abaisseur, sortie double 800 mA, 36 V en entr\u00e9e, avec deux minuteries de r\u00e9initialisation \u00e0 la mise en marche et une minuterie de chien de garde. La gamme de tension d&#039;entr\u00e9e, de 3,8 V \u00e0 36 V, \u00a0rend ce circuit id\u00e9al dans les conditions de rupture de charge et de d\u00e9marrage \u00e0 froid que l&#039;on rencontre commun\u00e9ment dans les applications de l&#039;automobile. 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