{"id":6411,"date":"2026-06-16T03:05:24","date_gmt":"2026-06-16T03:05:24","guid":{"rendered":"https:\/\/materialparts.com\/lm2596s-3-3\/"},"modified":"2026-06-16T03:05:24","modified_gmt":"2026-06-16T03:05:24","slug":"lm2596s-3-3","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/lm2596s-3-3\/","title":{"rendered":"LM2596S-3.3"},"content":{"rendered":"

Productos<\/h2>\n

The LM2596S-3.3 from Texas Instruments is a 3A step-down (buck) switching voltage regulator with a fixed 3.3V output in a TO-263-5 (D2PAK) surface-mount package. Operating at 150kHz fixed frequency, it accepts inputs from 4.5V to 40V and delivers up to 3A output.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n
Output Voltage<\/td>\n3.3V (fixed)<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n3A (max)<\/td>\n<\/tr>\n
Input Voltage<\/td>\n4.5V to 40V<\/td>\n<\/tr>\n
Switching Frequency<\/td>\n150kHz (fixed)<\/td>\n<\/tr>\n
Efficiency<\/td>\nUp to 92%<\/td>\n<\/tr>\n
Standby Current<\/td>\n50uA (typical)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40C to +125C<\/td>\n<\/tr>\n
Paquete<\/td>\nTO-263-5 (D2PAK)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 3A output current<\/li>\n
  • Fixed 3.3V, \u00b14% accuracy<\/li>\n
  • 150kHz switching frequency<\/li>\n
  • Only 4 external components needed<\/li>\n
  • Thermal shutdown and current limiting<\/li>\n
  • ON\/OFF standby pin (50uA)<\/li>\n
  • Internal frequency compensation<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • 3.3V logic from 5V, 12V, or 24V<\/li>\n
    • Battery-powered equipment<\/li>\n
    • Automotive systems<\/li>\n
    • Embedded 3.3V supplies<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM2596S-3.3 from Texas Instruments is a 3A step-down (buck) switching voltage regulator with a fixed 3.3V output in a TO-263-5 (D2PAK) surface-mount package. Operating at 150kHz fixed frequency, it accepts inputs from 4.5V to 40V and delivers up to 3A output. Key Specifications Output Voltage 3.3V (fixed) Output Current 3A (max) 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":[13,29],"tags":[],"chip_brand":[138],"class_list":["post-6411","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-ti"],"acf":{"brief_explanation":"3A buck regulator, fixed 3.3V, 4.5-40V in, 150kHz, TO-263-5","date_code":"","package_case":"TO-263-5 \/ D2PAK (10.16 x 8.42 x 4.57 mm)","in_stock":15000,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm2596.pdf","price":"$1.20 @ 1ku","product_introduction":"The LM2596S-3.3 is a fixed 3.3V output version of TI's SIMPLE SWITCHER step-down regulator family in TO-263-5 package. Operating from 4.5V to 40V input, it delivers up to 3A at 150kHz with only four external components required. Internal frequency compensation eliminates external compensation networks. The ON\/OFF pin enables shutdown with 50uA standby current. Thermal shutdown and current limiting protect against faults. The LM2596S-3.3 is one of the most widely used buck regulators for generating 3.3V from 5V, 12V, or 24V sources.","working_principle":"The LM2596S-3.3 operates as a fixed-frequency (150kHz), current-mode buck converter. The internal NPN Darlington power switch connects VIN to the inductor when ON. When OFF, the external Schottky catch diode conducts, allowing inductor current to freewheel. The output voltage is compared to an internal 1.23V reference via a built-in resistor divider. Current-mode control provides fast transient response and inherent current limiting. The ON\/OFF pin disables the oscillator when pulled below 1.3V.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>VIN<\/td>Input<\/td>Input supply (4.5V to 40V)<\/td><\/tr>
      2<\/td>OUTPUT<\/td>Power<\/td>Switch output; to inductor and catch diode<\/td><\/tr>
      3<\/td>GND<\/td>Ground<\/td>Circuit ground; tab also GND<\/td><\/tr>
      4<\/td>Feedback<\/td>Input<\/td>Feedback (internally connected for fixed 3.3V)<\/td><\/tr>
      5<\/td>ON\/OFF<\/td>Input<\/td>Shutdown; LOW = off, HIGH\/open = on<\/td><\/tr><\/table>","application_scenarios":"
      • 3.3V from 12V:<\/b> Converts 12V automotive\/industrial supply to 3.3V with up to 92% efficiency<\/li>
      • Embedded 3.3V Supply:<\/b> Powers MCU and sensors from 5V\/9V with only 4 external components<\/li>
      • Battery 3.3V:<\/b> Regulates 6-24V battery to 3.3V for IoT with high efficiency<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Vout<\/th>Iout<\/th>Key Difference<\/th><\/tr>
        LM2596S-5.0<\/td>TI<\/td>5.0V<\/td>3A<\/td>Fixed 5V version<\/td><\/tr>
        LM2596S-ADJ<\/td>TI<\/td>Adj<\/td>3A<\/td>Adjustable output<\/td><\/tr>
        LM2678-3.3<\/td>TI<\/td>3.3V<\/td>5A<\/td>Higher current<\/td><\/tr>
        MP1584EN-LF-Z<\/td>MPS<\/td>Adj<\/td>3A<\/td>Higher fsw, smaller inductor<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6411","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=6411"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6411\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=6411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=6411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=6411"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=6411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}