{"id":68,"date":"2019-11-17T22:21:12","date_gmt":"2019-11-17T21:21:12","guid":{"rendered":"http:\/\/home.bolukan.nl\/blog\/?p=68"},"modified":"2020-12-29T20:46:12","modified_gmt":"2020-12-29T19:46:12","slug":"ldo-ht7333-on-esp12f-adapter-plate","status":"publish","type":"post","link":"https:\/\/www.bolukan.nl\/?p=68","title":{"rendered":"LDO HT7333 on ESP12F adapter plate"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">On the back of the ESP8266 adapter plate a Low-dropout (LDO) regulator can be added to adapt a higher voltage to the needed 3.3V. If you add a LDO, the zero ohm resistor on the front side (middle resistor) needs to be removed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I use a HT7333 which is more efficient than an AMS1117. Take notice the AMS1117 has a different pin configuration and cannot be used as replacement. The ESP8266 adapter plate is fitted with SOT-223 solder pads, but with some extra solder the smaller HT7333 SOT-89 fits nicely.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The HT7333 delivers a maximum of 250mA and its quiescent current is 3,5\u03bcA. The dropout voltage is less than 0,1V. This is less relevant as I use it to get down from 5V to 3.3V, but the HT7333 is very usable in combination with a LiPo batttery. With a less than 100mA typical use for an ESP8266, the 0,15 Watt heat production (1,7V x &lt;0,1A) is not a problem.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-4 wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img fetchpriority=\"high\" decoding=\"async\" width=\"269\" height=\"256\" src=\"https:\/\/www.bolukan.nl\/wp-content\/uploads\/2019\/11\/ESP8266-adapter-plate-explained_512-e1574027536507.jpg\" alt=\"ESP8266 adapter plate - explained\" data-id=\"70\" data-full-url=\"https:\/\/www.bolukan.nl\/wp-content\/uploads\/2019\/11\/ESP8266-adapter-plate-explained_512-e1574027536507.jpg\" data-link=\"https:\/\/www.bolukan.nl\/?attachment_id=70\" class=\"wp-image-70\"\/><figcaption class=\"blocks-gallery-item__caption\">Adapter plate<br>(backside added to image)<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" width=\"256\" height=\"256\" src=\"https:\/\/www.bolukan.nl\/wp-content\/uploads\/2019\/11\/IMG_1781-e1574027549723.jpg\" alt=\"LDO HT7333 SOT-89\" data-id=\"67\" data-full-url=\"https:\/\/www.bolukan.nl\/wp-content\/uploads\/2019\/11\/IMG_1781-e1574027549723.jpg\" data-link=\"https:\/\/www.bolukan.nl\/?attachment_id=67\" class=\"wp-image-67\"\/><figcaption class=\"blocks-gallery-item__caption\">Soldered pin<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" width=\"256\" height=\"256\" src=\"https:\/\/www.bolukan.nl\/wp-content\/uploads\/2019\/11\/IMG_1780-e1574027556820.jpg\" alt=\"LDO HT7333 SOT-89\" data-id=\"66\" data-full-url=\"https:\/\/www.bolukan.nl\/wp-content\/uploads\/2019\/11\/IMG_1780-e1574027556820.jpg\" data-link=\"https:\/\/www.bolukan.nl\/?attachment_id=66\" class=\"wp-image-66\"\/><figcaption class=\"blocks-gallery-item__caption\">Soldered pins<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"256\" height=\"256\" src=\"https:\/\/www.bolukan.nl\/wp-content\/uploads\/2019\/11\/IMG_1778-e1574027561821.jpg\" alt=\"LDO HT7333 SOT-89\" data-id=\"65\" data-full-url=\"https:\/\/www.bolukan.nl\/wp-content\/uploads\/2019\/11\/IMG_1778-e1574027561821.jpg\" data-link=\"https:\/\/www.bolukan.nl\/?attachment_id=65\" class=\"wp-image-65\"\/><figcaption class=\"blocks-gallery-item__caption\">HT7333 SOT89<\/figcaption><\/figure><\/li><\/ul><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>On the back of the ESP8266 adapter plate a Low-dropout (LDO) regulator can be added to adapt a higher voltage to the needed 3.3V. If you add a LDO, the zero ohm resistor on the front side (middle resistor) needs to be removed. I use a HT7333 which is more efficient than an AMS1117. Take [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[7,9,8,10],"class_list":["post-68","post","type-post","status-publish","format-standard","hentry","category-esp8266","tag-esp8266","tag-ht7333","tag-ldo","tag-pcb"],"_links":{"self":[{"href":"https:\/\/www.bolukan.nl\/index.php?rest_route=\/wp\/v2\/posts\/68","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bolukan.nl\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bolukan.nl\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bolukan.nl\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bolukan.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=68"}],"version-history":[{"count":11,"href":"https:\/\/www.bolukan.nl\/index.php?rest_route=\/wp\/v2\/posts\/68\/revisions"}],"predecessor-version":[{"id":157,"href":"https:\/\/www.bolukan.nl\/index.php?rest_route=\/wp\/v2\/posts\/68\/revisions\/157"}],"wp:attachment":[{"href":"https:\/\/www.bolukan.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=68"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bolukan.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=68"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bolukan.nl\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=68"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}