{"id":3316,"date":"2026-06-01T01:17:28","date_gmt":"2026-06-01T01:17:28","guid":{"rendered":"https:\/\/materialparts.com\/lm2576t-12\/"},"modified":"2026-06-01T01:17:28","modified_gmt":"2026-06-01T01:17:28","slug":"lm2576t-12","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lm2576t-12\/","title":{"rendered":"LM2576T-12"},"content":{"rendered":"

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

The LM2576T-12 from Texas Instruments is a SIMPLE SWITCHER step-down voltage regulator providing a fixed 12V output at up to 3A load current. It integrates all active functions including a 150kHz fixed-frequency oscillator, voltage reference, and power switch into a single TO-220-5 package. Requiring only four external components, it offers a simple and cost-effective buck converter solution.<\/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
\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>\n3A<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n15V to 40V<\/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 88%<\/td>\n<\/tr>\n
\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u064a\u0627\u0637\u064a<\/td>\n50uA typical<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 to 125\u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nTO-220-5<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 3A output current capability<\/li>\n
  • Fixed 12V output with 2% tolerance<\/li>\n
  • 150kHz fixed-frequency internal oscillator<\/li>\n
  • Requires only 4 external components<\/li>\n
  • Shutdown mode reduces quiescent current to 50uA<\/li>\n
  • Built-in thermal shutdown and current limit protection<\/li>\n
  • Wide input voltage range up to 40V<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Simple buck (step-down) power converters<\/li>\n
    • On-card switching regulators<\/li>\n
    • Battery-powered voltage conversion<\/li>\n
    • Automotive and industrial power supplies<\/li>\n
    • Positive-to-negative converter circuits<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM2576T-12 from Texas Instruments is a SIMPLE SWITCHER step-down voltage regulator providing a fixed 12V output at up to 3A load current. It integrates all active functions including a 150kHz fixed-frequency oscillator, voltage reference, and power switch into a single TO-220-5 package. Requiring only four external components, it offers a simple and […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[31,13],"tags":[],"chip_brand":[138],"class_list":["post-3316","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"3A step-down switching regulator, fixed 12V output, 150kHz, TO-220-5","date_code":"","package_case":"TO-220-5 (5-lead, 10.16 x 4.55 x 9.28 mm)","in_stock":11250,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm2576.pdf","price":"$1.35 @ 1ku","product_introduction":"The LM2576T-12 from TI is a SIMPLE SWITCHER step-down voltage regulator providing a fixed 12V output at up to 3A. It integrates a 150kHz oscillator, voltage reference, and power switch, requiring only four external components. Protection features include thermal shutdown, current limiting, and a shutdown pin that reduces quiescent current to 50uA.","working_principle":"The LM2576T-12 uses a fixed-frequency buck converter topology. The internal NPN Darlington power switch connects VIN to the output inductor at 150kHz. The error amplifier and PWM controller adjust the duty cycle to maintain 12V regulation. When the switch turns off, the catch diode provides a return path for inductor current. The shutdown pin disables the oscillator and power switch.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VIN<\/td>Power<\/td>Input supply voltage<\/td><\/tr>
      2<\/td>Output<\/td>Output<\/td>Switch output to inductor<\/td><\/tr>
      3<\/td>GND<\/td>Ground<\/td>Ground (thermal tab)<\/td><\/tr>
      4<\/td>Feedback<\/td>Input<\/td>Output voltage sense<\/td><\/tr>
      5<\/td>ON\/OFF<\/td>Input<\/td>Shutdown control (low=ON)<\/td><\/tr><\/table>","application_scenarios":"
      • 12V power bus generation from 24V or 36V industrial supplies<\/li>
      • Automotive 12V regulated output from battery<\/li>
      • Simple step-down converters for industrial equipment<\/li>
      • Battery-powered devices requiring efficient conversion<\/li>
      • Positive-to-negative (inverting) buck-boost configurations<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LM2576T-12\/NOPB<\/td>TO-220-5<\/td>Pb-free version<\/td><\/tr>
        TI<\/td>LM2576HV-12<\/td>TO-220-5<\/td>High-voltage (60V input)<\/td><\/tr>
        onsemi<\/td>NCV2576D2T12G<\/td>D2PAK-5<\/td>Automotive AEC-Q100<\/td><\/tr>
        TI<\/td>LM2676T-12<\/td>TO-220-7<\/td>260kHz, higher efficiency<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3316","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=3316"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3316\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=3316"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=3316"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=3316"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=3316"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}