{"id":8970,"date":"2026-07-01T06:14:02","date_gmt":"2026-07-01T06:14:02","guid":{"rendered":"https:\/\/materialparts.com\/lm5117pmhx\/"},"modified":"2026-07-03T08:01:37","modified_gmt":"2026-07-03T08:01:37","slug":"lm5117pmhx","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/lm5117pmhx\/","title":{"rendered":"LM5117PMHX"},"content":{"rendered":"

Productos<\/h2>\n

The LM5117PMHX is a TI 65V synchronous buck DC-DC controller, functionally identical to LM5117PMHX\/NOPB. Packaged in 20-HTSSOP, -40C to +125C.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n
Vin<\/td>\n5.5V to 65V<\/td>\n<\/tr>\n
Topology<\/td>\nBuck (step-down)<\/td>\n<\/tr>\n
Fsw<\/td>\n200kHz \/ 480kHz<\/td>\n<\/tr>\n
Salida<\/td>\nTransistor Driver<\/td>\n<\/tr>\n
Synch Rect<\/td>\nYes<\/td>\n<\/tr>\n
Paquete<\/td>\n20-HTSSOP<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 5.5V to 65V wide input range<\/li>\n
  • Synchronous buck controller<\/li>\n
  • 200kHz or 480kHz switching<\/li>\n
  • Synchronous rectification<\/li>\n
  • Soft start and frequency control<\/li>\n
  • Current mode control<\/li>\n
  • -40C to +125C operation<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • 48V telecom POL<\/li>\n
    • 12V\/24V industrial bus<\/li>\n
    • Automotive front-end supply<\/li>\n
    • LED driver pre-regulator<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM5117PMHX is a TI 65V synchronous buck DC-DC controller, functionally identical to LM5117PMHX\/NOPB. Packaged in 20-HTSSOP, -40C to +125C. Key Specifications Vin 5.5V to 65V Topology Buck (step-down) Fsw 200kHz \/ 480kHz Output Transistor Driver Synch Rect Yes Package 20-HTSSOP Features 5.5V to 65V wide input range Synchronous buck controller 200kHz or […]<\/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":[599],"chip_brand":[138],"class_list":["post-8970","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","tag-lm5117pmhx","chip_brand-ti"],"acf":{"brief_explanation":"65V sync buck controller, 200\/480kHz, HTSSOP-20","date_code":"","package_case":"20-Pin HTSSOP (6.5 x 4.4 x 1.0 mm)","in_stock":3800,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm5117.pdf","price":"$2.95 @ 1ku","product_introduction":"The LM5117PMHX is a Texas Instruments 65V synchronous step-down (buck) DC-DC controller in a 20-pin HTSSOP package. This is the non-NOPB variant of the LM5117PMHX\/NOPB, functionally identical. As a controller, it drives external N-channel MOSFETs for the high-side and low-side switches, allowing designers to optimize the power stage. The 5.5V to 65V input range supports telecom 48V, automotive 12V\/24V, and industrial bus rails. The selectable 200kHz or 480kHz switching frequency allows trade-offs between efficiency and solution size. The synchronous rectification eliminates Schottky diode conduction loss. The PMHX suffix indicates HTSSOP-20 tape-and-reel packaging.","working_principle":"The LM5117PMHX uses peak current mode control. The error amplifier compares the FB pin voltage against an internal reference, setting the peak inductor current threshold. The high-side MOSFET turns on at each cycle start, ramping up inductor current. When the current sense reaches the COMP threshold, the high-side turns off and the low-side synchronous MOSFET turns on. The adaptive dead-time control prevents shoot-through. The bootstrapped high-side driver uses an external bootstrap capacitor.","pin_description":"
      Pin<\/th>Mnemonic<\/th>Description<\/th><\/tr>
      1<\/td>VIN<\/td>Input supply (5.5-65V)<\/td><\/tr>
      2<\/td>EN<\/td>Enable<\/td><\/tr>
      3<\/td>SS<\/td>Soft start capacitor<\/td><\/tr>
      4<\/td>FB<\/td>Feedback (0.8V ref)<\/td><\/tr>
      5<\/td>COMP<\/td>Error amplifier output<\/td><\/tr>
      6-10<\/td>Control<\/td>Frequency, sync, current sense<\/td><\/tr>
      11-15<\/td>Gate Drive<\/td>HDRV, LDRV, BOOT, SW<\/td><\/tr>
      16-20<\/td>GND\/VCC<\/td>Ground and bias supply<\/td><\/tr><\/table>","application_scenarios":"
      • 48V telecom bus to 12V POL with external MOSFETs for 10A output<\/li>\n
      • Automotive 12V battery to 3.3V with 65V transient protection<\/li>\n
      • Industrial 24V to 5V synchronous buck with frequency sync<\/li>\n
      • LED driver pre-regulator with 480kHz for compact solution<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        LM5117PMHX\/NOPB<\/td>TI<\/td>Pb-free variant<\/td><\/tr>
        LM5116<\/td>TI<\/td>80V input version<\/td><\/tr>
        LM5145<\/td>TI<\/td>65V, 1MHz, PMBus<\/td><\/tr>
        MP3910<\/td>MPS<\/td>Similar 60V controller<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8970","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=8970"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8970\/revisions"}],"predecessor-version":[{"id":9483,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8970\/revisions\/9483"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=8970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=8970"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=8970"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=8970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}