{"id":6562,"date":"2026-06-18T14:46:02","date_gmt":"2026-06-18T14:46:02","guid":{"rendered":"https:\/\/materialparts.com\/lm2596\/"},"modified":"2026-06-18T14:46:02","modified_gmt":"2026-06-18T14:46:02","slug":"lm2596","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/lm2596\/","title":{"rendered":"LM2596"},"content":{"rendered":"

Productos<\/h2>\n

The LM2596 from Texas Instruments is a 3A step-down (buck) switching voltage regulator available in fixed output versions (3.3V, 5V, 12V) and an adjustable version (1.2V to 37V). Operating at 150kHz switching frequency, it provides high efficiency up to 92% in a 5-pin TO-263 or TO-220 package.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Corriente de salida<\/td>\n3A<\/td>\n<\/tr>\n
Input Voltage<\/td>\n4.5V to 40V<\/td>\n<\/tr>\n
Output Voltage<\/td>\n3.3V\/5V\/12V fixed or 1.2-37V adjustable<\/td>\n<\/tr>\n
Switching Frequency<\/td>\n150kHz<\/td>\n<\/tr>\n
Efficiency<\/td>\nUp to 92%<\/td>\n<\/tr>\n
Line Regulation<\/td>\n0.5% (typ)<\/td>\n<\/tr>\n
Load Regulation<\/td>\n1% (typ)<\/td>\n<\/tr>\n
Paquete<\/td>\nTO-263-5 (D2PAK) \/ TO-220-5<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40 to +125 C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 3A output current capability<\/li>\n
  • 150kHz fixed switching frequency<\/li>\n
  • Internal thermal shutdown and current limiting<\/li>\n
  • Requires only 4 external components<\/li>\n
  • Adjustable and fixed output versions<\/li>\n
  • Standby mode with 50uA quiescent current<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Automotive and battery-powered systems<\/li>\n
    • Distributed power architectures<\/li>\n
    • Pre-regulator for linear regulators<\/li>\n
    • Positive-to-negative conversion (buck-boost)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM2596 from Texas Instruments is a 3A step-down (buck) switching voltage regulator available in fixed output versions (3.3V, 5V, 12V) and an adjustable version (1.2V to 37V). Operating at 150kHz switching frequency, it provides high efficiency up to 92% in a 5-pin TO-263 or TO-220 package. Key Specifications Output Current 3A Input […]<\/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":[],"chip_brand":[138],"class_list":["post-6562","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 buck regulator, 4.5-40V input, 150kHz, up to 92% efficiency","date_code":"","package_case":"TO-263-5 (D2PAK) \/ TO-220-5","in_stock":5709,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm2596.pdf","price":"$0.85 @ 1ku","product_introduction":"The LM2596 is a monolithic integrated circuit from Texas Instruments that provides all the active functions for a step-down (buck) switching regulator capable of driving a 3A load with excellent line and load regulation. Available in fixed 3.3V, 5V, 12V output versions and an adjustable version (1.2V to 37V), it requires a minimum number of external components. The 150kHz switching frequency allows the use of smaller and lower cost inductors and capacitors. Internal features include thermal shutdown, current limiting, and an on\/off standby mode that reduces quiescent current to 50uA.","working_principle":"The LM2596 uses a fixed-frequency pulse-width modulation (PWM) control scheme operating at 150kHz. The internal power switch (Darlington NPN) connects the input voltage to the output inductor during the on-time, storing energy in the inductor's magnetic field. During the off-time, the inductor current flows through the external catch diode to the load and output capacitor. The feedback comparator monitors the output voltage and adjusts the duty cycle to maintain regulation. Current mode control provides inherent cycle-by-cycle current limiting. The thermal shutdown circuit disables the switch when junction temperature exceeds approximately 150C.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>VIN<\/td>Input supply voltage (4.5-40V)<\/td><\/tr>
      2<\/td>OUTPUT<\/td>Switch output (connect to inductor)<\/td><\/tr>
      3<\/td>GND<\/td>Ground<\/td><\/tr>
      4<\/td>FEEDBACK<\/td>Output voltage feedback (connect to output or resistor divider)<\/td><\/tr>
      5<\/td>ON\/OFF<\/td>Shutdown control (LOW = on, HIGH = off)<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive 12V\/24V to 5V\/3.3V power conversion for MCU and logic rails<\/li>
      • Battery-powered equipment needing efficient voltage step-down<\/li>
      • Industrial distributed power converting 24V bus to lower voltages<\/li>
      • Pre-regulator feeding an LDO for clean, efficient power supply design<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        LM2596HV<\/td>TI<\/td>High-voltage version, up to 60V input<\/td><\/tr>
        LM2676<\/td>TI<\/td>3A, 260kHz, synchronous version<\/td><\/tr>
        MP1584EN<\/td>MPS<\/td>4A, 1.5MHz, smaller inductor<\/td><\/tr>
        XL4015<\/td>XLSEMI<\/td>5A, 180kHz, higher current<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6562","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=6562"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6562\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=6562"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=6562"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=6562"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=6562"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}