{"id":1003,"date":"2020-09-13T22:54:01","date_gmt":"2020-09-13T22:54:01","guid":{"rendered":"http:\/\/www.tech-g.com\/?p=1003"},"modified":"2026-04-01T23:04:12","modified_gmt":"2026-04-01T23:04:12","slug":"the-cheapest-3-3v-power-supply-using-the-ld33cv-ld1117v33","status":"publish","type":"post","link":"https:\/\/www.voodoo.business\/blog\/2020\/09\/13\/the-cheapest-3-3v-power-supply-using-the-ld33cv-ld1117v33\/","title":{"rendered":"The cheapest 3.3V power supply using the LD33CV (LD1117V33)"},"content":{"rendered":"\n<p>To create a tiny power supply to turn a 5V power source into 3.3V for powering the ESP8266 or ESP32, or maybe an Arduino pro mini (3.3V version), all you need to do is to couple the LD33CV-LD1117V33 with a pair of capacitors, in my case I am using the 25V\/100 uf capacitor<\/p>\n\n\n\n<p>All you need to do is the following<\/p>\n\n\n\n<p>connect one capacitor to the pins 1 (Vin) and 3 (GND), and the other to the pins 2(Vout) and 3 (GND), and you are done.<\/p>\n\n\n\n<div class=\"wp-block-group is-layout-grid wp-container-core-group-is-layout-9649a0d9 wp-block-group-is-layout-grid\"><\/div>\n\n\n\n<p>At this stage, the ones between 1 and 3 will receive the input 5V power, While the ones closer to each other (2 and 3) will have the 3v3 output voltage that you can connect directly to your Arduino or ESP micro controller<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"661\" height=\"1024\" data-id=\"1008\" src=\"https:\/\/www.qworqs.com\/blog\/wp-content\/uploads\/2020\/09\/SOLDERED-661x1024.jpg\" alt=\"\" class=\"wp-image-1008\" srcset=\"https:\/\/www.voodoo.business\/blog\/wp-content\/uploads\/2020\/09\/SOLDERED-661x1024.jpg 661w, https:\/\/www.voodoo.business\/blog\/wp-content\/uploads\/2020\/09\/SOLDERED-194x300.jpg 194w, https:\/\/www.voodoo.business\/blog\/wp-content\/uploads\/2020\/09\/SOLDERED-768x1190.jpg 768w, https:\/\/www.voodoo.business\/blog\/wp-content\/uploads\/2020\/09\/SOLDERED-991x1536.jpg 991w, https:\/\/www.voodoo.business\/blog\/wp-content\/uploads\/2020\/09\/SOLDERED.jpg 1200w\" sizes=\"auto, (max-width: 661px) 100vw, 661px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"556\" height=\"1024\" data-id=\"1006\" src=\"https:\/\/www.qworqs.com\/blog\/wp-content\/uploads\/2020\/09\/LD33CV-556x1024.jpg\" alt=\"\" class=\"wp-image-1006\" srcset=\"https:\/\/www.voodoo.business\/blog\/wp-content\/uploads\/2020\/09\/LD33CV-556x1024.jpg 556w, https:\/\/www.voodoo.business\/blog\/wp-content\/uploads\/2020\/09\/LD33CV-163x300.jpg 163w, https:\/\/www.voodoo.business\/blog\/wp-content\/uploads\/2020\/09\/LD33CV.jpg 684w\" sizes=\"auto, (max-width: 556px) 100vw, 556px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.qworqs.com\/blog\/wp-content\/uploads\/2020\/09\/LD33CV-datasheet-pinout.gif\" alt=\"\"\/><\/figure>\n<\/figure>\n\n\n\n<p>The LD1117V33 you see above (LD33CV) comes in a TO-220 package, and uses an NPN pass transistor for efficiency to provide up to 800ma of power (Cooling may be needed to achieve maximum)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To create a tiny power supply to turn a 5V power source into 3.3V for powering the ESP8266 or ESP32, or maybe an Arduino pro mini (3.3V version), all you need to do is to couple the LD33CV-LD1117V33 with a pair of capacitors, in my case I am using the 25V\/100 uf capacitor All you [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[89],"tags":[101,99,100,97,96,98],"class_list":["post-1003","post","type-post","status-publish","format-standard","hentry","category-diy-electronics","tag-arduino-pro-mini","tag-esp32","tag-esp8266","tag-ld1117v33","tag-ld33cv","tag-power"],"_links":{"self":[{"href":"https:\/\/www.voodoo.business\/blog\/wp-json\/wp\/v2\/posts\/1003","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.voodoo.business\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.voodoo.business\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.voodoo.business\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.voodoo.business\/blog\/wp-json\/wp\/v2\/comments?post=1003"}],"version-history":[{"count":6,"href":"https:\/\/www.voodoo.business\/blog\/wp-json\/wp\/v2\/posts\/1003\/revisions"}],"predecessor-version":[{"id":6217,"href":"https:\/\/www.voodoo.business\/blog\/wp-json\/wp\/v2\/posts\/1003\/revisions\/6217"}],"wp:attachment":[{"href":"https:\/\/www.voodoo.business\/blog\/wp-json\/wp\/v2\/media?parent=1003"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.voodoo.business\/blog\/wp-json\/wp\/v2\/categories?post=1003"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.voodoo.business\/blog\/wp-json\/wp\/v2\/tags?post=1003"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}