{"id":884561,"date":"2025-11-19T11:25:53","date_gmt":"2025-11-19T11:25:53","guid":{"rendered":"https:\/\/www.electronicsweekly.com\/?p=884561"},"modified":"2025-11-19T11:25:54","modified_gmt":"2025-11-19T11:25:54","slug":"automotive-low-drop-regulator","status":"publish","type":"post","link":"https:\/\/www.electronicsweekly.com\/news\/products\/power-supplies\/automotive-low-drop-regulator-2025-11\/","title":{"rendered":"Automotive low drop regulator"},"content":{"rendered":"<p><a rel=\"image\" href=\"https:\/\/static.electronicsweekly.com\/wp-content\/uploads\/2025\/11\/19111548\/Diodes-AP7369-low-drop-regulator-block-diagram.webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-884568\" src=\"https:\/\/static.electronicsweekly.com\/wp-content\/uploads\/2025\/11\/19111548\/Diodes-AP7369-low-drop-regulator-block-diagram-300x192.webp\" alt=\"Diodes AP7369 automotive low drop regulator block diagram\" width=\"300\" height=\"192\" srcset=\"https:\/\/static.electronicsweekly.com\/wp-content\/uploads\/2025\/11\/19111548\/Diodes-AP7369-low-drop-regulator-block-diagram-300x192.webp 300w, https:\/\/static.electronicsweekly.com\/wp-content\/uploads\/2025\/11\/19111548\/Diodes-AP7369-low-drop-regulator-block-diagram-1024x655.webp 1024w, https:\/\/static.electronicsweekly.com\/wp-content\/uploads\/2025\/11\/19111548\/Diodes-AP7369-low-drop-regulator-block-diagram-768x491.webp 768w, https:\/\/static.electronicsweekly.com\/wp-content\/uploads\/2025\/11\/19111548\/Diodes-AP7369-low-drop-regulator-block-diagram.webp 1032w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>AP7369Q is a series of 45V input low-drop-out linear regulators from Diodes that can provide up to 150mA to a load.<\/p><div class=\"elect-content\" style=\"margin-left: auto; margin-right: auto; text-align: center; \" id=\"elect-603798594\"><div id=\"x02\">\r\n<script type=\"text\/javascript\"> if ($(window).width() <= 768) { googletag.display('x02'); } <\/script>\r\n<\/div>\r\n<\/div>\n<p>Quiescent current can be as low as 2.1\u00b5A and, depending on variant, the output is fixed at 2.5V, 3.3V or 5V.<\/p>\n<p>&#8220;The device provides a very fast response against line voltage transient and load current transient, and ensures no overshoot voltage occurs during start-up and short-circuit recovery,&#8221; according to the company.<\/p><div class=\"elect-post-content-2\" style=\"margin-left: auto; margin-right: auto; text-align: center; \" id=\"elect-752015673\"><div id=\"DFP-EW-InRead1-Mobile\">\r\n<script type=\"text\/javascript\"> if ($(window).width() <= 768) { googletag.display('DFP-EW-InRead1-Mobile'); } <\/script>\r\n<\/div>\r\n<\/div><div class=\"elect-test\" style=\"margin-left: auto; margin-right: auto; text-align: center; \" id=\"elect-33983752\"><div id=\"DFP-EW-InRead1\">\r\n<script type=\"text\/javascript\"> if ($(window).width() > 768) { googletag.display('DFP-EW-InRead1'); } <\/script>\r\n<\/div>\r\n<BR>\r\n<\/div>\n<p>The part is AEC-Q100 Grade 1 complaint for automotive use, operates across -40 to +125\u00b0C ambient and supports PPAP documentation.<\/p>\n<p>One possible &#8220;application is [in] an ultra-wideband sensor in a digital key<br \/>\nsystem which operates even when the vehicle is turned off&#8221;, said Diodes.<\/p>\n<p>Typical dropout voltage is 35mV with a 10mA load and 350mV at 100mA.<\/p>\n<p>Power supply rejection ratio is up to 85dB at 1kHz.<\/p>\n<p>The stability of LDO regulators is sensitive to the output capacitor value. With this device, an X7R or X5R ceramic capacitor between 2.2 and 100\u00b5F is recommended, but it can be as low as 1\u03bcF. The input requires a 1\u03bcF ceramic capacitor, but this one can be arbitrarily high.<\/p>\n<p>Packaging is 2.8 x 3mm five pin SOT25 or 6.5 x 7mm three pin SOT223. Junction-to-board thermal resistance is ~90 or 52\u00b0C\/W respectively.<\/p>\n<p>Over-temperature protection is provided, as is short-circuit protection.<\/p>\n<p>Line and load transient graphs are in <a rel=\"image\" href=\"https:\/\/www.diodes.com\/datasheet\/download\/AP7369Q.pdf\" rel=\"nofollow\" target=\"_blank\">AP7369Q data sheet on this Diodes web page<\/a><\/p>\n<p>Recently, <a rel=\"image\" href=\"https:\/\/www.electronicsweekly.com\/news\/business\/ablic-launches-automotive-linear-regulator-2025-09\/\">Ablic claimed to have the lowest quiescent current automotive LDO<\/a>, but only by 100nA compared to the one above.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>AP7369Q is a series of 45V input low-drop-out linear regulators from Diodes that can provide up to 150mA to a load. Quiescent current can be as low as 2.1\u00b5A and, &#8230;<\/p>\n","protected":false},"author":2,"featured_media":884568,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12668,12692,12677],"tags":[12909,13638,13703],"class_list":["post-884561","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analogue-linear-mixed-signal-ics","category-automotive-electronics","category-power-supplies","tag-automotive","tag-ldo","tag-voltage-regulator"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Automotive low drop regulator | Electronics Weekly<\/title>\n<meta name=\"description\" content=\"AP7369Q is a series of 45V input low-drop-out linear regulators from Diodes that can provide up to 150mA to a load. 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