{"id":10668,"date":"2026-07-20T09:42:48","date_gmt":"2026-07-20T09:42:48","guid":{"rendered":"https:\/\/ic-vendor.com\/lms36355qrnlrq1\/"},"modified":"2026-07-20T09:42:48","modified_gmt":"2026-07-20T09:42:48","slug":"lms36355qrnlrq1","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/lms36355qrnlrq1\/","title":{"rendered":"LMS36355QRNLRQ1"},"content":{"rendered":"

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

The LMS36355QRNLRQ1 from Texas Instruments is an AEC-Q100 qualified automotive-grade 3.5A, 36V synchronous buck converter with a fixed 5V output. Operating at 400 kHz fixed switching frequency with up to 96% peak efficiency, it features 18 uA quiescent current, wettable flank VQFN package, and RESET power-good output, making it ideal for automotive 12V-to-5V power conversion.<\/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\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n3.5A<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n3.9V – 36V (42V transient)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n5V (fixed)<\/td>\n<\/tr>\n
\u062a\u0631\u062f\u062f \u0627\u0644\u062a\u062d\u0648\u064a\u0644<\/td>\n400 kHz (+\/-10%)<\/td>\n<\/tr>\n
Efficiency<\/td>\n96% peak (12V to 5V)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n18 uA (typical, no load)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n0.35V @ 3.5A (typical)<\/td>\n<\/tr>\n
Reference Accuracy<\/td>\n+\/-1.5%<\/td>\n<\/tr>\n
RESET Output<\/td>\nOpen-drain, 3 ms release timer<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nVQFN-HR-22 (RNL) 5×4 mm<\/td>\n<\/tr>\n
Temperature<\/td>\n-40 to +150 deg C (junction)<\/td>\n<\/tr>\n
\u0627\u0644\u0645\u0624\u0647\u0644\u0627\u062a<\/td>\nAEC-Q100 Grade 1<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • AEC-Q100 Grade 1 qualified for automotive applications (-40 to +125 deg C ambient)<\/li>\n
  • 96% peak efficiency converting 12V to 5V with low EMI design<\/li>\n
  • Automatic light-load mode (PFM) for high efficiency across the full load range<\/li>\n
  • Pin-selectable forced PWM mode for noise-sensitive applications<\/li>\n
  • Wettable flank package enables visual solder joint inspection<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Automotive 12V to 5V point-of-load conversion<\/li>\n
    • Car infotainment and head unit power supplies<\/li>\n
    • ADAS and telematics power rails<\/li>\n
    • Automotive cluster and navigation systems<\/li>\n
    • Industrial 24V to 5V step-down conversion<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LMS36355QRNLRQ1 from Texas Instruments is an AEC-Q100 qualified automotive-grade 3.5A, 36V synchronous buck converter with a fixed 5V output. Operating at 400 kHz fixed switching frequency with up to 96% peak efficiency, it features 18 uA quiescent current, wettable flank VQFN package, and RESET power-good output, making it ideal for automotive 12V-to-5V […]<\/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":[2009],"chip_brand":[138],"class_list":["post-10668","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","tag-lms36355qrnlrq1","chip_brand-ti"],"acf":{"brief_explanation":"Automotive 3.5A 36V synchronous buck, 5V fixed, 400kHz, 96% eff, 18uA Iq, AEC-Q100, VQFN-22","date_code":"","package_case":"VQFN-HR-22 (RNL) 5x4 mm, wettable flanks","in_stock":12177,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lms3635-q1.pdf","price":"$3.157 @ 3ku","product_introduction":"The LMS36355-Q1 is an AEC-Q100 Grade 1 qualified synchronous buck converter from Texas Instruments, delivering 3.5A at a fixed 5V output from up to 36V input. It achieves 96% peak efficiency when converting 12V to 5V, with only 18 uA quiescent current at no load. The 400 kHz fixed switching frequency with external synchronization capability, automatic light-load PFM mode, and pin-selectable forced PWM provide flexibility for EMI-sensitive automotive applications. The open-drain RESET output with built-in filtering and 3 ms release timer eliminates the need for a separate supervisor IC.","working_principle":"The LMS36355-Q1 uses a current-mode control architecture with integrated high-side and low-side N-channel MOSFETs in a synchronous buck topology. At heavy loads, the device operates in PWM mode at 400 kHz fixed frequency. As the load decreases, it automatically transitions to PFM (pulse frequency modulation) mode to maintain high efficiency, reducing switching frequency proportionally with load current. The FPWM pin allows forcing continuous PWM operation for noise-sensitive applications. An innovative frequency foldback architecture enables regulation of 3.3V output from inputs as low as 3.5V. The RESET output monitors output voltage with built-in glitch filtering and a 3 ms release delay.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1-2<\/td>PVIN<\/td>Power<\/td>Power stage input (3.9-36V)<\/td><\/tr>
      3<\/td>VCC\/BIAS<\/td>Power<\/td>Internal bias supply<\/td><\/tr>
      4<\/td>EN<\/td>Input<\/td>Enable (active high)<\/td><\/tr>
      5<\/td>FPWM<\/td>Input<\/td>Force PWM mode select<\/td><\/tr>
      6<\/td>SYNC<\/td>Input<\/td>External frequency sync<\/td><\/tr>
      7<\/td>FB<\/td>Input<\/td>Feedback (connect for fixed output)<\/td><\/tr>
      8<\/td>AGND<\/td>Power<\/td>Analog ground<\/td><\/tr>
      9<\/td>RESET<\/td>Output<\/td>Power-good (open-drain)<\/td><\/tr>
      10<\/td>CBOOT<\/td>Power<\/td>Bootstrap capacitor<\/td><\/tr>
      11-12<\/td>SW<\/td>Output<\/td>Switch node (to inductor)<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive 12V to 5V POL: main power rail for car electronics<\/li>
      • ADAS systems: high-efficiency step-down for radar and camera modules<\/li>
      • Infotainment: clean 5V supply with forced PWM mode for audio<\/li>
      • Industrial 24V bus: step-down to 5V for PLC and motor control<\/li>
      • Telematics: 18 uA Iq enables always-on battery-supplied operation<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LMS3655LQRNLRQ1<\/td>VQFN-22<\/td>5.5A, 5V output variant<\/td><\/tr>
        TI<\/td>LMS36353QRNLRQ1<\/td>VQFN-22<\/td>3.5A, 3.3V output variant<\/td><\/tr>
        TI<\/td>TPS54540BQR<\/td>VQFN-12<\/td>5A, 42V non-auto buck<\/td><\/tr>
        Infineon<\/td>TLE6389-2G<\/td>PG-DSO-8<\/td>Automotive buck, similar range<\/td><\/tr>
        Rohm<\/td>BD9S301MUF-C<\/td>HTSSOP-8<\/td>3A automotive buck<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/comments?post=10668"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10668\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=10668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=10668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=10668"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10668"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}