{"id":3322,"date":"2026-06-01T01:17:38","date_gmt":"2026-06-01T01:17:38","guid":{"rendered":"https:\/\/materialparts.com\/lm317t\/"},"modified":"2026-06-01T01:17:38","modified_gmt":"2026-06-01T01:17:38","slug":"lm317t","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/lm317t\/","title":{"rendered":"LM317T"},"content":{"rendered":"

Productos<\/h2>\n

The LM317T from Texas Instruments is an adjustable 3-terminal positive voltage regulator capable of supplying over 1.5A over an output voltage range of 1.25V to 37V. Only two external resistors set the output voltage. Features internal current limiting, thermal shutdown, and safe operating area protection in a TO-220-3 package.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n
Output Voltage Range<\/td>\n1.25V to 37V<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n1.5A<\/td>\n<\/tr>\n
Line Regulation<\/td>\n0.01%\/V typical<\/td>\n<\/tr>\n
Load Regulation<\/td>\n0.1% typical<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n1.25V nominal<\/td>\n<\/tr>\n
Ripple Rejection<\/td>\n80dB @ 120Hz<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n0 to 125\u00b0C<\/td>\n<\/tr>\n
Paquete<\/td>\nTO-220-3<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 1.25V to 37V adjustable output with two resistors<\/li>\n
  • 1.5A output current<\/li>\n
  • 0.01%\/V line regulation, 0.1% load regulation<\/li>\n
  • Internal thermal overload protection<\/li>\n
  • Internal short-circuit current limiting<\/li>\n
  • Output safe-area compensation<\/li>\n
  • Floating operation for high-voltage applications<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Adjustable bench power supplies<\/li>\n
    • On-card voltage regulation<\/li>\n
    • Battery charger circuits<\/li>\n
    • Current regulator applications<\/li>\n
    • Programmable output regulators<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM317T from Texas Instruments is an adjustable 3-terminal positive voltage regulator capable of supplying over 1.5A over an output voltage range of 1.25V to 37V. Only two external resistors set the output voltage. Features internal current limiting, thermal shutdown, and safe operating area protection in a TO-220-3 package. Key Specifications Output Voltage […]<\/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":[13,32],"tags":[],"chip_brand":[138],"class_list":["post-3322","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-ti"],"acf":{"brief_explanation":"1.5A adjustable positive voltage regulator, 1.25-37V, TO-220-3","date_code":"","package_case":"TO-220-3 \/ KCS (10.16 x 4.55 x 9.28 mm, tab=VOUT)","in_stock":15200,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm317.pdf","price":"$0.55 @ 1ku","product_introduction":"The LM317T from TI is an industry-standard adjustable 3-terminal positive voltage regulator. It supplies over 1.5A with proper heatsinking and output voltage is set by two external resistors: VOUT = 1.25V x (1 + R2\/R1). Outstanding 0.01%\/V line regulation and 0.1% load regulation. Comprehensive protection: current limiting, thermal shutdown, safe-area compensation.","working_principle":"Maintains 1.25V reference between OUTPUT and ADJUST pins. With R1 (OUT-ADJ) and R2 (ADJ-GND), VOUT = 1.25V x (1 + R2\/R1) + IADJ x R2. Internal error amplifier adjusts NPN Darlington output to maintain regulation. Thermal shutdown at ~170\u00b0C. Current limit reduces output when input-output differential exceeds safe operating area.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>ADJUST<\/td>Input<\/td>Voltage adjustment feedback<\/td><\/tr>
      2<\/td>VOUT<\/td>Output<\/td>Regulated output (heatsink tab)<\/td><\/tr>
      3<\/td>VIN<\/td>Power<\/td>Unregulated input supply<\/td><\/tr><\/table>","application_scenarios":"
      • Adjustable bench power supplies (1.25-37V)<\/li>
      • Local on-card voltage regulation<\/li>
      • Battery charger circuits (constant V or I)<\/li>
      • Current regulator (IOUT = 1.25V\/R)<\/li>
      • Programmable supply with DAC-controlled R2<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LM317AT<\/td>TO-220-3<\/td>Tighter 1% tolerance<\/td><\/tr>
        onsemi<\/td>LM317TG<\/td>TO-220-3<\/td>onsemi version, pin compatible<\/td><\/tr>
        TI<\/td>LM337T<\/td>TO-220-3<\/td>Negative adjustable complement<\/td><\/tr>
        TI<\/td>LM317DCY<\/td>SOT-223<\/td>SMD version<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3322","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=3322"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3322\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=3322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=3322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=3322"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=3322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}