{"id":5163,"date":"2026-06-09T09:04:51","date_gmt":"2026-06-09T09:04:51","guid":{"rendered":"https:\/\/materialparts.com\/mic29300-3-3wu-tr\/"},"modified":"2026-06-09T09:04:51","modified_gmt":"2026-06-09T09:04:51","slug":"mic29300-3-3wu-tr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/mic29300-3-3wu-tr\/","title":{"rendered":"MIC29300-3.3WU-TR"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The MIC29300-3.3WU-TR from Microchip is a 3A fixed 3.3V low-dropout voltage regulator with ultra-low ground current, designed for battery-powered and automotive applications.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629<\/td>\nMicrochip Technology<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n3.3V fixed<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n3A<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n600 mV max @ 3A<\/td>\n<\/tr>\n
Ground Current<\/td>\n240 \u00b5A typical @ 3A<\/td>\n<\/tr>\n
Line Regulation<\/td>\n0.06% typical<\/td>\n<\/tr>\n
Load Regulation<\/td>\n0.2% typical<\/td>\n<\/tr>\n
Ripple Rejection<\/td>\n70 dB @ 120Hz<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\nUp to 26V<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-223-3<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +125 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 3A output current<\/li>\n
  • Ultra-low ground current: 240\u00b5A<\/li>\n
  • 600mV max dropout at 3A<\/li>\n
  • Fixed 3.3V output<\/li>\n
  • Battery-friendly low quiescent current<\/li>\n
  • Reverse-battery protection<\/li>\n
  • Current limiting and thermal shutdown<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Battery-powered equipment<\/li>\n
    • Automotive electronics<\/li>\n
    • Portable instruments<\/li>\n
    • Efficient linear post-regulation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MIC29300-3.3WU-TR from Microchip is a 3A fixed 3.3V low-dropout voltage regulator with ultra-low ground current, designed for battery-powered and automotive applications. Key Specifications Manufacturer Microchip Technology Output Voltage 3.3V fixed Output Current 3A Dropout Voltage 600 mV max @ 3A Ground Current 240 \u00b5A typical @ 3A Line Regulation 0.06% typical Load […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,32],"tags":[],"chip_brand":[134],"class_list":["post-5163","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-microchip"],"acf":{"brief_explanation":"3A LDO, 3.3V fixed, 600mV dropout, SOT-223, ultra-low Iq","date_code":"","package_case":"SOT-223-3 (6.5 x 3.5 x 1.6 mm)","in_stock":2152,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/mic2930.pdf","price":"$1.50 @ 1ku","product_introduction":"The MIC29300-3.3WU-TR from Microchip is a 3A fixed 3.3V LDO regulator with ultra-low 240\u00b5A ground current at full load, making it exceptionally battery-friendly. The 600mV max dropout at 3A and wide input range up to 26V suit automotive and industrial applications. The SOT-223 package provides compact surface-mount installation with adequate thermal dissipation. Built-in protections include reverse-battery, current limiting, and thermal shutdown.","working_principle":"The MIC29300 uses a PNP pass transistor architecture that achieves low dropout voltage and ultra-low ground current. Unlike NPN-based LDOs where ground current equals output current, the PNP design draws only base drive current plus bias, resulting in constant ground current regardless of load. The error amplifier regulates output by controlling base drive to the pass transistor.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>GND\/EN<\/td>Ground \/ Enable<\/td><\/tr>
      2<\/td>VOUT<\/td>3.3V regulated output<\/td><\/tr>
      3<\/td>VIN<\/td>Input supply (up to 26V)<\/td><\/tr>
      4<\/td>GND (Tab)<\/td>Ground \/ thermal<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive 12V\/24V to 3.3V regulation<\/li>
      • Battery-powered 3.3V systems<\/li>
      • Post-regulation for switching supplies<\/li>
      • Efficient linear regulation<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Notes<\/th><\/tr>
        Microchip<\/td>MIC29300-5.0WU-TR<\/td>5V version<\/td><\/tr>
        Microchip<\/td>MIC29300-ADJWU-TR<\/td>Adjustable version<\/td><\/tr>
        TI<\/td>LM3940IT-3.3\/NOPB<\/td>Similar 3.3V LDO<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5163","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=5163"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5163\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=5163"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=5163"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=5163"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=5163"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}