{"id":227154,"date":"2013-05-23T22:00:00","date_gmt":"2013-05-23T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/circuit-dalimentation-buck-a-faible-consommation\/"},"modified":"2013-05-23T22:00:00","modified_gmt":"2013-05-23T22:00:00","slug":"circuit-dalimentation-buck-a-faible-consommation","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/circuit-dalimentation-buck-a-faible-consommation\/","title":{"rendered":"Circuit d\u2019alimentation buck \u00e0 faible consommation"},"content":{"rendered":"

Conçu pour fournir une tension d’alimentation compatible avec la prochaine génération de systèmes audio et multimédia de l’automobile, ce composant AEC Q100 intègre tous les circuits de protection et de commande requis par un régulateur fort courant de précision. Sa caractéristique clef est l’utilisation d’une modulation à impulsion de fréquence PFM pour réduire sa consommation lorsqu’il fournit une tension de maintien à faible charge. Ainsi, il consomme moins de 50 µA pour délivrer un courant de 40 µA et une tension de 3.3 V à partir d’une tension d’entrée de 12 V. De plus, la consommation se réduit à moins de 5 µA en mode veille.
\nGrâce à la synchronisation de la fréquence de commutation à une horloge externe, ce régulateur est compatible avec une large gamme de fréquences et de composants externes. En outre, il fournit un signal "power on reset" NPOR validé par la tension de sortie. Ses nombreuses protections comprennent une limitation de courant cycle à cycle, un mode "hiccup" de protection contre les courts circuits, une protection de la diode asynchrone contre les circuits ouverts et les courts circuits, une protection de la broche "boot" contre les tensions de circuits ouverts et de courts circuits, une protection contre les sous tensions d’entrée, une protection de la sortie contre les surtensions et une protection thermique.
\nCe composant est proposé en boîtier bas profile TSSOP 16 broches, suffixe LP avec une semelle dissipatrice pour améliorer le refroidissement.<\/p>\n

www.allegromicro.com\/en\/Products\/Regulators-And-Lighting\/Single-Output-Regulators\/A8580.aspx<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Qualifi\u00e9 AEC Q100, le circuit A8580 d\u2019Allegro Microsystems est un r\u00e9gulateur buck d\u2019un haut degr\u00e9 de flexibilit\u00e9 qui offre une tension d\u2019entr\u00e9e de 4 \u00e0 40 V, une fr\u00e9quence de commutation de 250 kHz \u00e0 2.4 MHz et un courant de sortie allant jusqu\u2019\u00e0 2.5 A avec une pr\u00e9cision de tension de \u00b11.0%.<\/p>\n","protected":false},"author":22,"featured_media":227155,"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-227154","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"Circuit d\u2019alimentation buck \u00e0 faible consommation ...<\/title>\n<meta name=\"description\" content=\"Qualifi\u00e9 AEC Q100, le circuit A8580 d\u2019Allegro 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