{"id":5654,"date":"2026-06-11T03:49:15","date_gmt":"2026-06-11T03:49:15","guid":{"rendered":"https:\/\/materialparts.com\/lm2594m-5-0\/"},"modified":"2026-06-12T03:26:40","modified_gmt":"2026-06-12T03:26:40","slug":"lm2594m-5-0","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/lm2594m-5-0\/","title":{"rendered":"LM2594M-5.0"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The LM2594M-5.0 from TI is a 0.5A SIMPLE SWITCHER step-down regulator with 5V fixed output, 150kHz switching, and 4.5-40V input in SOIC-8.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n
\u5305\u88c5<\/td>\nSOIC-8<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • See datasheet for complete specifications<\/li>\n
  • Industry-standard package<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial control<\/li>\n
    • Consumer electronics<\/li>\n
    • Communication equipment<\/li>\n
    • Power management<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM2594M-5.0 from TI is a 0.5A SIMPLE SWITCHER step-down regulator with 5V fixed output, 150kHz switching, and 4.5-40V input in SOIC-8. Key Specifications Package SOIC-8 Features See datasheet for complete specifications Industry-standard package Applications Industrial control Consumer electronics Communication equipment Power management<\/p>","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-5654","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"0.5A SIMPLE SWITCHER buck, 5V fixed, 150kHz, SOIC-8","date_code":"","package_case":"SOIC-8","in_stock":12222,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm2594.pdf","price":"$1.50 @ 1ku","product_introduction":"The LM2594M-5.0 from TI is a 0.5A SIMPLE SWITCHER step-down regulator with 5V fixed output, 150kHz switching, and 4.5-40V input in SOIC-8.","working_principle":"The LM2594M-5.0 is a 0.5A step-down (buck) switching regulator from Texas Instruments in SOIC-8, operating at 150kHz fixed frequency. It is the low-current member of the SIMPLE SWITCHER family, designed for minimal external components: only an inductor (33uH), two capacitors (input and output), and a Schottky catch diode (1N5819 or MBR130) are required. The internal power switch is an NPN Darlington with 1.5V saturation voltage at 0.5A, which is the main source of power loss. The 150kHz switching frequency was chosen as a compromise between inductor size (33uH at 150kHz vs 6.8uH at 1MHz for newer devices) and switching losses. The feedback pin (FB) is internally connected to a resistor divider for the 5.0V fixed output version; no external resistors are needed. For the adjustable version (-ADJ), connect a resistor divider from VOUT to FB to GND. The ON\/OFF pin provides logic-level shutdown: pulling it HIGH (above 1.4V) reduces supply current to 85uA. The internal current limit is approximately 0.75A at 25C, protecting the device during overload and short-circuit conditions. The thermal shutdown activates at 165C. The SOIC-8 package provides approximately 100C\/W thermal resistance, limiting power dissipation to about 0.6W at 25C ambient. The typical efficiency is 75-80% at 12V input and 5V output, with most losses in the Darlington switch and Schottky diode.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VIN<\/td>Power<\/td>Input supply (4.5-40V)<\/td><\/tr>
      2<\/td>OUTPUT<\/td>Output<\/td>Switch output (connects to inductor, 0.5A switch)<\/td><\/tr>
      3<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      4<\/td>FB<\/td>Input<\/td>Feedback (connect to output for 5.0V fixed version)<\/td><\/tr>
      5<\/td>ON\/OFF<\/td>Input<\/td>Shutdown control (LOW=ON, HIGH=shutdown, 85uA Iq, internal pull-down)<\/td><\/tr><\/table>","application_scenarios":"
    • Industrial control<\/li>
    • Consumer electronics<\/li>
    • Communication equipment<\/li>
    • Power management<\/li>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
      Texas Instruments<\/td>LM2594M-5.0<\/td>SOIC-8<\/td>Same device, TI brand<\/td><\/tr>
      Texas Instruments<\/td>LM2594MX-5.0\/NOPB<\/td>SOIC-8<\/td>Same device, different ordering code<\/td><\/tr>
      Texas Instruments<\/td>LM2594M-ADJ<\/td>SOIC-8<\/td>Adjustable output version<\/td><\/tr>
      onsemi<\/td>LM2594M-5.0<\/td>SOIC-8<\/td>Same device, onsemi second source<\/td><\/tr>
      Texas Instruments<\/td>LM2674M-5.0<\/td>SOIC-8<\/td>Higher frequency (260kHz) version, smaller inductor<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5654","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=5654"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5654\/revisions"}],"predecessor-version":[{"id":6100,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5654\/revisions\/6100"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5654"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}