{"id":6668,"date":"2026-06-19T01:06:19","date_gmt":"2026-06-19T01:06:19","guid":{"rendered":"https:\/\/materialparts.com\/lm2675mx-12\/"},"modified":"2026-06-19T01:06:19","modified_gmt":"2026-06-19T01:06:19","slug":"lm2675mx-12","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lm2675mx-12\/","title":{"rendered":"LM2675MX-12"},"content":{"rendered":"

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

The LM2675MX-12 from Texas Instruments is a 1A step-down voltage regulator from the SIMPLE SWITCHER family, providing a fixed 12V output from up to 40V input. With 150 kHz fixed switching frequency and integrated high-side MOSFET, it requires only a few external components. Packaged in SOIC-8 for easy assembly and design.<\/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
\u0627\u0644\u0637\u0648\u0628\u0648\u0644\u0648\u062c\u064a\u0627<\/td>\nBuck (Step-Down)<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n8V to 40V<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n12V (fixed)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n1A<\/td>\n<\/tr>\n
\u062a\u0631\u062f\u062f \u0627\u0644\u062a\u062d\u0648\u064a\u0644<\/td>\n150 kHz (fixed)<\/td>\n<\/tr>\n
Efficiency<\/td>\nUp to 90%<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n2.5 mA (typical)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n50 \u00b5A (typical)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40\u00b0C to +125\u00b0C (junction)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-8 (3.9mm width)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Fixed 12V output, no feedback resistors needed<\/li>\n
  • SIMPLE SWITCHER: minimal external components<\/li>\n
  • 8V to 40V input range for automotive and industrial<\/li>\n
  • 1A output current with integrated MOSFET<\/li>\n
  • 150 kHz switching frequency<\/li>\n
  • Internal soft-start and thermal shutdown<\/li>\n
  • Available in 3.3V, 5V, 12V, and adjustable versions<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Automotive 24V to 12V step-down conversion<\/li>\n
    • Industrial 24V bus to 12V regulation<\/li>\n
    • Distributed power system point-of-load<\/li>\n
    • Battery-powered 12V supply generation<\/li>\n
    • General-purpose step-down DC-DC conversion<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM2675MX-12 from Texas Instruments is a 1A step-down voltage regulator from the SIMPLE SWITCHER family, providing a fixed 12V output from up to 40V input. With 150 kHz fixed switching frequency and integrated high-side MOSFET, it requires only a few external components. Packaged in SOIC-8 for easy assembly and design. Key Specifications […]<\/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":[13,32],"tags":[],"chip_brand":[138],"class_list":["post-6668","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-ti"],"acf":{"brief_explanation":"1A buck, 8-40V in, fixed 12V out, 150kHz, SOIC-8","date_code":"","package_case":"SOIC-8 (4.9\u00d73.9\u00d71.5 mm, 1.27mm pitch)","in_stock":4500,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm2675.pdf","price":"$2.45 @ 1ku","product_introduction":"The LM2675MX-12 from Texas Instruments is a 1A SIMPLE SWITCHER step-down regulator providing a fixed 12V output from 8V to 40V input. With 150 kHz switching frequency, integrated MOSFET, and only a few external components required, it simplifies 24V-to-12V conversion in automotive, industrial, and distributed power systems in a compact SOIC-8 package.","working_principle":"The LM2675MX-12 uses a fixed-frequency current-mode PWM control topology. The internal oscillator generates a 150 kHz clock that sets the switching frequency. The error amplifier compares the internal 12V reference with the output voltage (sampled via the FB pin tied to output for fixed version). The PWM comparator modulates the duty cycle of the integrated high-side NPN Darlington switch. During on-time, current flows from VIN through the switch and inductor to the output capacitor and load. During off-time, the external catch diode provides a current path for the inductor. The current-mode architecture provides cycle-by-cycle current limiting and excellent line regulation. Internal soft-start limits inrush current during startup.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>CB<\/td>I\/O<\/td>Bootstrap capacitor (connect 0.01\u00b5F to SW)<\/td><\/tr>\n
      2<\/td>FB<\/td>Input<\/td>Feedback (connect to output for fixed voltage version)<\/td><\/tr>\n
      3<\/td>ON\/OFF<\/td>Input<\/td>Shutdown control (float to enable, pull LOW to disable)<\/td><\/tr>\n
      4<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>\n
      5<\/td>VIN<\/td>Power<\/td>Input supply (8-40V)<\/td><\/tr>\n
      6<\/td>SW<\/td>Output<\/td>Switch output (connect to inductor and catch diode)<\/td><\/tr>\n
      7<\/td>NC<\/td>\u2014<\/td>No connect<\/td><\/tr>\n
      8<\/td>NC<\/td>\u2014<\/td>No connect<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Automotive 24V to 12V step-down conversion<\/li>\n
      • Industrial 24V bus to 12V point-of-load regulation<\/li>\n
      • Distributed power system secondary 12V rail generation<\/li>\n
      • Battery-powered 12V supply from 24V or 36V source<\/li>\n
      • General-purpose 12V power supply from higher voltage source<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        TI<\/td>LM2675MX-3.3<\/td>SOIC-8<\/td>Fixed 3.3V output version<\/td><\/tr>\n
        TI<\/td>LM2675MX-5.0<\/td>SOIC-8<\/td>Fixed 5V output version<\/td><\/tr>\n
        TI<\/td>LM2675MX-ADJ<\/td>SOIC-8<\/td>Adjustable output version (1.2-37V)<\/td><\/tr>\n
        TI<\/td>LM2679T-12<\/td>TO-220-7<\/td>5A version, through-hole<\/td><\/tr>\n
        Monolithic Power<\/td>MP1584EN-LF-Z<\/td>SOIC-8 EP<\/td>4.5-28V, 4A, higher frequency<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6668","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=6668"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6668\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6668"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6668"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}