{"id":6658,"date":"2026-06-19T01:05:59","date_gmt":"2026-06-19T01:05:59","guid":{"rendered":"https:\/\/materialparts.com\/lmr14050sddar\/"},"modified":"2026-06-19T01:05:59","modified_gmt":"2026-06-19T01:05:59","slug":"lmr14050sddar","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/lmr14050sddar\/","title":{"rendered":"LMR14050SDDAR"},"content":{"rendered":"

Productos<\/h2>\n

The LMR14050SDDAR from Texas Instruments is a 5A, 40V step-down (buck) converter with an integrated 90 m\u03a9 high-side MOSFET. Operating from 4V to 40V input with adjustable output down to 0.8V, it features 2.1 MHz switching frequency for compact solution size. The ultra-low 1 \u00b5A shutdown current and 25 \u00b5A quiescent current in Eco-mode make it ideal for battery-powered and automotive systems.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Topology<\/td>\nBuck (Step-Down)<\/td>\n<\/tr>\n
Input Voltage Range<\/td>\n4V to 40V<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n5A continuous<\/td>\n<\/tr>\n
Output Voltage Range<\/td>\n0.8V to 32V (adjustable)<\/td>\n<\/tr>\n
Switching Frequency<\/td>\n2.1 MHz (fixed)<\/td>\n<\/tr>\n
Integrated MOSFET RDS(ON)<\/td>\n90 m\u03a9 (high-side)<\/td>\n<\/tr>\n
Corriente de reposo<\/td>\n25 \u00b5A (Eco-mode)<\/td>\n<\/tr>\n
Shutdown Current<\/td>\n1 \u00b5A<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n0.8V (\u00b11%)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +150\u00b0C (junction)<\/td>\n<\/tr>\n
Paquete<\/td>\nWSON-12 (5\u00d75 mm) with PowerPAD<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Wide 4V to 40V input range for automotive and industrial<\/li>\n
  • 5A continuous output with integrated 90 m\u03a9 MOSFET<\/li>\n
  • 2.1 MHz fixed switching frequency for compact design<\/li>\n
  • Ultra-low 1 \u00b5A shutdown current<\/li>\n
  • 25 \u00b5A quiescent current in Eco-mode (PFM)<\/li>\n
  • Internal soft-start limits inrush current<\/li>\n
  • Cycle-by-cycle current limit and thermal shutdown<\/li>\n
  • Pulse skipping (Eco-mode) for improved light-load efficiency<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Automotive 12V\/24V step-down power supply<\/li>\n
    • Industrial 24V bus point-of-load regulation<\/li>\n
    • Battery-powered equipment with long standby time<\/li>\n
    • Embedded system 5V\/3.3V rail generation<\/li>\n
    • Telecom and networking power supply<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LMR14050SDDAR from Texas Instruments is a 5A, 40V step-down (buck) converter with an integrated 90 m\u03a9 high-side MOSFET. Operating from 4V to 40V input with adjustable output down to 0.8V, it features 2.1 MHz switching frequency for compact solution size. The ultra-low 1 \u00b5A shutdown current and 25 \u00b5A quiescent current in […]<\/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-6658","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-ti"],"acf":{"brief_explanation":"5A buck converter, 4-40V in, adj 0.8-32V out, 2.1MHz, WSON-12","date_code":"","package_case":"WSON-12 (5\u00d75 mm, 0.8mm pitch, PowerPAD)","in_stock":5400,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lmr14050.pdf","price":"$2.10 @ 1ku","product_introduction":"The LMR14050SDDAR from Texas Instruments is a 5A step-down buck converter with integrated 90 m\u03a9 high-side MOSFET operating from 4V to 40V input. Its 2.1 MHz switching frequency enables compact filter design, while the 1 \u00b5A shutdown and 25 \u00b5A Eco-mode quiescent currents extend battery life in always-on applications. Adjustable output from 0.8V to 32V with cycle-by-cycle current limit and thermal shutdown provide robust power conversion for automotive and industrial systems.","working_principle":"The LMR14050SDDAR uses a constant-frequency current-mode control architecture. An internal oscillator generates a 2.1 MHz clock. The error amplifier compares the FB pin voltage with the 0.8V internal reference, and the PWM comparator modulates the duty cycle of the integrated high-side NMOS switch. Current-mode control provides inherent cycle-by-cycle current limiting and excellent line transient response. In Eco-mode (pulse skipping), the device enters PFM operation at light loads to reduce switching losses and maintain high efficiency. The internal bootstrap circuit generates gate drive voltage above VIN for the high-side MOSFET. The PowerPAD on the WSON package provides a low thermal resistance path to the PCB for heat dissipation.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>BOOT<\/td>I\/O<\/td>Bootstrap capacitor (0.1\u00b5F to SW)<\/td><\/tr>\n
      2<\/td>VIN<\/td>Power<\/td>Input supply (4-40V)<\/td><\/tr>\n
      3<\/td>EN<\/td>Input<\/td>Enable (float to enable, pull below 1.2V to disable)<\/td><\/tr>\n
      4<\/td>FB<\/td>Input<\/td>Feedback (connect to output voltage divider)<\/td><\/tr>\n
      5<\/td>SS<\/td>I\/O<\/td>Soft-start (connect capacitor to GND)<\/td><\/tr>\n
      6-8<\/td>GND<\/td>Power<\/td>Ground (connect to PowerPAD)<\/td><\/tr>\n
      9-11<\/td>SW<\/td>Output<\/td>Switch node (connect to inductor)<\/td><\/tr>\n
      12<\/td>NC<\/td>\u2014<\/td>No connect<\/td><\/tr>\n
      Pad<\/td>PowerPAD<\/td>Power<\/td>Thermal pad (connect to GND plane)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Automotive 12V\/24V to 5V or 3.3V step-down power supply<\/li>\n
      • Industrial 24V bus point-of-load regulation for PLCs and sensors<\/li>\n
      • Battery-powered equipment requiring long standby with 1\u00b5A shutdown<\/li>\n
      • Embedded system 5V\/3.3V rail from 12V or 24V source<\/li>\n
      • Telecom and networking equipment DC-DC conversion<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        TI<\/td>LMR16050SDDAR<\/td>WSON-12<\/td>60V input, lower frequency (0.8MHz)<\/td><\/tr>\n
        TI<\/td>TPS5450DDAR<\/td>SOIC-8 EP<\/td>5.5-36V, 5A, 500kHz, higher Iq<\/td><\/tr>\n
        Monolithic Power<\/td>MP8759GD-Z<\/td>QFN-12<\/td>4.5-36V, 5A, 500kHz<\/td><\/tr>\n
        TI<\/td>LM46002PWP<\/td>HTSSOP-16<\/td>3.5-60V, 2A, simple switcher<\/td><\/tr>\n
        Richtek<\/td>RT6208GQW<\/td>WDFN-10<\/td>4.5-36V, 5A, 1MHz<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6658","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=6658"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6658\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=6658"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=6658"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=6658"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=6658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}