{"id":10132,"date":"2026-07-08T08:56:30","date_gmt":"2026-07-08T08:56:30","guid":{"rendered":"https:\/\/materialparts.com\/lm5143rhjr\/"},"modified":"2026-07-08T08:56:30","modified_gmt":"2026-07-08T08:56:30","slug":"lm5143rhjr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/lm5143rhjr\/","title":{"rendered":"LM5143RHJR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The Texas Instruments LM5143RHJR is a Sync buck controller, 4.5-65V, 2.2MHz, VQFN-32. It drives external N-channel MOSFETs for high-efficiency synchronous buck conversion in telecom, industrial, and automotive power systems.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n
\u8f93\u5165\u7535\u538b<\/td>\n4.5-65V<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n2.2MHz<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nVQFN-32<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • External MOSFET drive for design flexibility<\/li>\n
  • Current mode control<\/li>\n
  • Adjustable switching frequency<\/li>\n
  • Power good and enable functions<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Telecom base station power<\/li>\n
    • Industrial 24V\/48V systems<\/li>\n
    • Automotive infotainment power<\/li>\n
    • Server and storage power supplies<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Texas Instruments LM5143RHJR is a Sync buck controller, 4.5-65V, 2.2MHz, VQFN-32. It drives external N-channel MOSFETs for high-efficiency synchronous buck conversion in telecom, industrial, and automotive power systems. Key Specifications Input Voltage 4.5-65V Switching Frequency 2.2MHz Package VQFN-32 Features External MOSFET drive for design flexibility Current mode control Adjustable switching frequency Power […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[31,13],"tags":[1414],"chip_brand":[138],"class_list":["post-10132","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","tag-lm5143rhjr","chip_brand-ti"],"acf":{"brief_explanation":"Sync buck controller, 4.5-65V, 2.2MHz, VQFN-32","date_code":"","package_case":"VQFN-32","in_stock":1900,"datasheet":"https:\/\/www.ti.com\/product\/LM5143","price":"$4.50 @ 1ku","product_introduction":"The LM5143RHJR from Texas Instruments is a synchronous buck controller operating from 4.5-65V input with 2.2MHz switching frequency in a VQFN-32 package. It drives external N-channel MOSFETs for high-efficiency power conversion in telecom, industrial, and automotive applications.","working_principle":"The controller uses peak current mode control. An error amplifier compares the output voltage feedback with an internal reference. The error signal controls the peak inductor current through a PWM comparator. The high-side gate driver turns on the external high-side MOSFET, and the low-side driver controls the synchronous MOSFET. Adaptive dead-time control prevents shoot-through current.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      VIN<\/td>Input voltage sense<\/td>Analog input<\/td><\/tr>
      SW<\/td>Switch node<\/td>Power<\/td><\/tr>
      BOOT<\/td>Bootstrap capacitor<\/td>Supply<\/td><\/tr>
      HG<\/td>High-side gate drive<\/td>Output<\/td><\/tr>
      LG<\/td>Low-side gate drive<\/td>Output<\/td><\/tr>
      FB<\/td>Output voltage feedback<\/td>Analog input<\/td><\/tr>
      COMP<\/td>Error amplifier output<\/td>Analog<\/td><\/tr>
      SS<\/td>Soft-start<\/td>Analog<\/td><\/tr><\/table>","application_scenarios":"
      • 48V telecom to point-of-load conversion<\/li>
      • Industrial 24V bus to 5V\/3.3V regulation<\/li>
      • Automotive 12V battery to logic power<\/li>
      • Server VRM multi-phase controller<\/li><\/ul>","alternative_models":"
        Model<\/th>Brand<\/th>Vin<\/th>Notes<\/th><\/tr>
        ISL6520CBZ<\/td>Renesas<\/td>5-12V<\/td>Single output<\/td><\/tr>
        NCP51111DR2G<\/td>onsemi<\/td>4.5-65V<\/td>Automotive grade<\/td><\/tr>
        BD9G341AEFJ-E2<\/td>ROHM<\/td>7-36V<\/td>Integrated driver<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/10132","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=10132"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/10132\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=10132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=10132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=10132"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}