{"id":6805,"date":"2026-06-21T12:32:53","date_gmt":"2026-06-21T12:32:53","guid":{"rendered":"https:\/\/materialparts.com\/lm317btg\/"},"modified":"2026-06-21T12:32:53","modified_gmt":"2026-06-21T12:32:53","slug":"lm317btg","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/lm317btg\/","title":{"rendered":"LM317BTG"},"content":{"rendered":"

Productos<\/h2>\n

The LM317BTG from onsemi is a 1.5 A adjustable positive linear voltage regulator with 1.2 V to 37 V output range and 40 V maximum input in a TO-220 through-hole package.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Tipo<\/td>\nAdjustable Positive Linear Voltage Regulator<\/td>\n<\/tr>\n
Output Voltage Range<\/td>\n1.2 V to 37 V<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n1.5 A<\/td>\n<\/tr>\n
Input Voltage (Max)<\/td>\n40 V<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n2.5 V (typical) @ Io=1.5A<\/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>\n1.25 V<\/td>\n<\/tr>\n
Paquete<\/td>\nTO-220-3<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n0C to +125C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Output adjustable from 1.2 V to 37 V<\/li>\n
  • 1.5 A output current<\/li>\n
  • 0.1% typical load regulation<\/li>\n
  • Internal thermal overload protection<\/li>\n
  • Internal short-circuit current limiting<\/li>\n
  • Output transistor safe-area compensation<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Adjustable bench power supplies<\/li>\n
    • Battery chargers with constant voltage\/current<\/li>\n
    • Local on-card voltage regulation<\/li>\n
    • Current limiter and constant current source<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM317BTG from onsemi is a 1.5 A adjustable positive linear voltage regulator with 1.2 V to 37 V output range and 40 V maximum input in a TO-220 through-hole package. Key Specifications Type Adjustable Positive Linear Voltage Regulator Output Voltage Range 1.2 V to 37 V Output Current 1.5 A Input Voltage […]<\/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":[19,13],"tags":[],"chip_brand":[144],"class_list":["post-6805","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-on"],"acf":{"brief_explanation":"1.5A Adjustable LDO Regulator, 1.2-37V Output, TO-220","date_code":"","package_case":"TO-220-3 (15.0 x 10.4 x 4.6 mm)","in_stock":13456,"datasheet":"https:\/\/www.onsemi.com\/download\/data-sheet\/pdf\/lm317-d.pdf","price":"$0.42 @ 1ku","product_introduction":"The LM317BTG from onsemi is the industry-standard adjustable positive linear voltage regulator capable of supplying 1.5 A over an output voltage range of 1.2 V to 37 V. The output voltage is set using only two external resistors. The device features excellent 0.01%\/V line regulation and 0.1% load regulation. Internal protection circuits include thermal shutdown, current limiting, and safe-area compensation for the output transistor. The TO-220 package allows mounting on a heatsink for high-power dissipation applications. The LM317 is one of the most widely used linear regulators in the industry.","working_principle":"The LM317BTG maintains a constant 1.25 V reference between the output (VOUT) and adjustment (ADJ) pins. This reference voltage drives a constant current through the external resistor R1 (typically 240 Ohm) from VOUT to ADJ. The ADJ pin draws a very small quiescent current (50 uA typical), which also flows through the second resistor R2 from ADJ to ground. The output voltage is calculated as VOUT = 1.25V x (1 + R2\/R1) + IADJ x R2. Since IADJ is typically 50 uA, its contribution is negligible for most designs. The internal error amplifier compares the 1.25 V reference with the voltage across R1 and adjusts the pass transistor to maintain regulation. The thermal shutdown circuit monitors junction temperature and shuts down the pass transistor above approximately 170C. The current limiting circuit restricts output current to approximately 2.2 A under short-circuit conditions.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>ADJ<\/td>Input<\/td>Adjustment pin (sets output voltage)<\/td><\/tr>
      2<\/td>VOUT<\/td>Output<\/td>Regulated output (1.2-37V)<\/td><\/tr>
      3<\/td>VIN<\/td>Input<\/td>Unregulated input (up to 40V)<\/td><\/tr><\/table>","application_scenarios":"
      • Adjustable bench power supply 1.2-30V at 1.5A<\/li>
      • Constant current battery charger with current-set resistor<\/li>
      • On-card 5V to 3.3V regulation with heatsink<\/li>
      • Variable speed DC motor controller power stage<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LM317T<\/td>TO-220<\/td>Industry standard equivalent<\/td><\/tr>
        ST<\/td>LM317T<\/td>TO-220<\/td>Industry standard equivalent<\/td><\/tr>
        onsemi<\/td>LM317BD2TG<\/td>D2PAK<\/td>SMD version, same function<\/td><\/tr>
        TI<\/td>LM317HV<\/td>TO-220<\/td>High-voltage version (57V max input)<\/td><\/tr>
        TI<\/td>LM338T<\/td>TO-220<\/td>5A version, same topology<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6805","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=6805"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6805\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=6805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=6805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=6805"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=6805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}