{"id":10718,"date":"2026-07-20T10:42:05","date_gmt":"2026-07-20T10:42:05","guid":{"rendered":"https:\/\/ic-vendor.com\/lm2734ymk-nopb\/"},"modified":"2026-07-20T10:42:05","modified_gmt":"2026-07-20T10:42:05","slug":"lm2734ymk-nopb","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/lm2734ymk-nopb\/","title":{"rendered":"LM2734YMK\/NOPB"},"content":{"rendered":"

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

The LM2734YMK\/NOPB is a 1 A step-down DC-DC converter from Texas Instruments in a 6-pin Thin SOT-23 (DDC) package. Operating from 3 V to 20 V input with a 550 kHz switching frequency (Y version), it provides an adjustable output from 0.8 V to 18 V. The internal 300 m\u03a9 NMOS switch and current-mode control deliver high efficiency up to 90% in a minimal PCB footprint.<\/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
\u0627\u0644\u0637\u0648\u0628\u0648\u0644\u0648\u062c\u064a\u0627<\/td>\nStep-Down (Buck) with Integrated NMOS<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n3 V to 20 V<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n1 A<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n0.8 V to 18 V (Adjustable)<\/td>\n<\/tr>\n
\u062a\u0631\u062f\u062f \u0627\u0644\u062a\u062d\u0648\u064a\u0644<\/td>\n550 kHz (LM2734Y)<\/td>\n<\/tr>\n
NMOS RDS(on)<\/td>\n300 m\u03a9 typical<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n6-SOT-23-THN (DDC) \u2014 2.9 x 1.6 mm<\/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
  • Ultra-compact 6-pin Thin SOT-23 package<\/li>\n
  • Internal 300 m\u03a9 NMOS switch for minimal external components<\/li>\n
  • 550 kHz switching for small inductor and capacitor values<\/li>\n
  • 30 nA shutdown current for battery conservation<\/li>\n
  • Internal soft-start to reduce inrush current<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Local point-of-load regulation<\/li>\n
    • HDD core power supplies<\/li>\n
    • Set-top boxes and consumer electronics<\/li>\n
    • USB and battery-powered devices<\/li>\n
    • Notebook computers and DSL modems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM2734YMK\/NOPB is a 1 A step-down DC-DC converter from Texas Instruments in a 6-pin Thin SOT-23 (DDC) package. Operating from 3 V to 20 V input with a 550 kHz switching frequency (Y version), it provides an adjustable output from 0.8 V to 18 V. The internal 300 m\u03a9 NMOS switch and […]<\/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":[2058],"chip_brand":[138],"class_list":["post-10718","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","tag-lm2734ymk-nopb","chip_brand-ti"],"acf":{"brief_explanation":"1 A buck converter, 3\u201320 V input, 550 kHz, 300 m\u03a9 NMOS, 6-SOT-23, adjustable","date_code":"","package_case":"6-SOT-23-THN (DDC) \u2014 2.9 x 1.6 mm","in_stock":8533,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm2734.pdf","price":"$1.81 @ 1ku","product_introduction":"The LM2734 is a monolithic high-frequency PWM step-down DC\/DC converter from Texas Instruments in a 6-pin Thin SOT package. The device provides all active functions for local DC\/DC conversion with fast transient response in the smallest possible PCB area. Using 0.5 \u00b5m BiCMOS technology, the internal 300 m\u03a9 NMOS switch drives 1 A loads with on-times as low as 13 ns, supporting high-frequency conversion from 3 V to 20 V input down to 0.8 V output. Efficiencies up to 90% are achievable with minimal external components.","working_principle":"The LM2734 uses current-mode PWM control with internal compensation. The internal NMOS switch connects the input voltage to the inductor during the on-time, and an external Schottky catch diode provides the freewheeling path during the off-time. The feedback voltage (0.8 V reference) is compared against the divided output voltage by the internal error amplifier. Current-mode control provides inherent line voltage feed-forward and cycle-by-cycle current limiting. Internal soft-start gradually increases the switch current limit at startup to reduce inrush current. The 30 nA shutdown mode is activated by pulling the EN pin low.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>BOOST<\/td>I\/O<\/td>Bootstrap voltage for NMOS gate drive<\/td><\/tr>
      2<\/td>GND<\/td>Power<\/td>Signal and power ground<\/td><\/tr>
      3<\/td>FB<\/td>Input<\/td>Feedback input (0.8 V reference)<\/td><\/tr>
      4<\/td>EN<\/td>Input<\/td>Enable control (high = on)<\/td><\/tr>
      5<\/td>VIN<\/td>Input<\/td>Input supply voltage (3\u201320 V)<\/td><\/tr>
      6<\/td>SW<\/td>Output<\/td>Switch output (to inductor and diode)<\/td><\/tr><\/table>","application_scenarios":"
      • 5 V or 12 V to 3.3 V point-of-load conversion<\/li>
      • Notebook computer peripheral power rails<\/li>
      • USB bus-powered device voltage regulation<\/li>
      • HDD core voltage generation<\/li>
      • DSL modem and set-top box POL supplies<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LM2734XMK\/NOPB<\/td>6-SOT-23<\/td>1.6 MHz version, smaller inductors<\/td><\/tr>
        TI<\/td>LM2831YMF\/NOPB<\/td>5-SOT-23<\/td>1 A, 550 kHz, 5-pin version<\/td><\/tr>
        Monolithic Power<\/td>MP2122DJ-3.3-LF-Z<\/td>6-TSOT-23<\/td>1 A, 1.5 MHz, integrated<\/td><\/tr>
        Richtek<\/td>RT9193-18GB<\/td>6-SOT-23<\/td>1 A buck, 1.5 MHz<\/td><\/tr>
        Diodes Inc<\/td>AP62200TWU-7<\/td>6-TSOT-26<\/td>2 A, 400 kHz, wider range<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10718","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=10718"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10718\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=10718"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=10718"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=10718"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10718"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}