{"id":5528,"date":"2026-06-10T04:22:18","date_gmt":"2026-06-10T04:22:18","guid":{"rendered":"https:\/\/materialparts.com\/lm317t-dg\/"},"modified":"2026-06-10T04:22:18","modified_gmt":"2026-06-10T04:22:18","slug":"lm317t-dg","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lm317t-dg\/","title":{"rendered":"LM317T-DG"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The LM317T-DG from onsemi is a 1.5A adjustable positive voltage regulator in a TO-220-3 through-hole package. The T denotes TO-220, DG denotes the onsemi RoHS-compliant version. With 1.25V to 37V adjustable output, 1.5A output current, and 0.1%\/V line regulation, it is the classic universal linear regulator for bench supplies and adjustable power sources.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n1.25V to 37V adjustable<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n1.5A<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\nUp to 40V<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n2.5V typical @ 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>\n1.25V +\/-1%<\/td>\n<\/tr>\n
Thermal Regulation<\/td>\n0.02%\/W<\/td>\n<\/tr>\n
Protection<\/td>\nCurrent limit, thermal shutdown<\/td>\n<\/tr>\n
Operating Temp<\/td>\n0 to +125 C (TJ)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nTO-220-3<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 1.25V to 37V wide adjustable output<\/li>\n
  • 1.5A output current capability<\/li>\n
  • 0.01%\/V excellent line regulation<\/li>\n
  • Built-in current limiting and thermal shutdown<\/li>\n
  • Only 2 resistors needed to set output voltage<\/li>\n
  • Industry-standard TO-220 package<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Adjustable bench power supplies<\/li>\n
    • Battery charger circuits<\/li>\n
    • Constant current regulators<\/li>\n
    • DC-DC post-regulation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM317T-DG from onsemi is a 1.5A adjustable positive voltage regulator in a TO-220-3 through-hole package. The T denotes TO-220, DG denotes the onsemi RoHS-compliant version. With 1.25V to 37V adjustable output, 1.5A output current, and 0.1%\/V line regulation, it is the classic universal linear regulator for bench supplies and adjustable power sources. […]<\/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":[],"class_list":["post-5528","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo"],"acf":{"brief_explanation":"1.5A adj LDO, 1.25-37V, TO-220-3","date_code":"","package_case":"TO-220-3 (10.16 x 4.58 mm, through-hole)","in_stock":8751,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/LM317-D.PDF","price":"$0.45 @ 1ku","product_introduction":"The LM317T-DG from onsemi is a 1.5A adjustable positive voltage regulator in a TO-220-3 through-hole package. The T denotes TO-220, DG denotes the onsemi RoHS-compliant version. With 1.25V to 37V adjustable output, 1.5A output current, and 0.1%\/V line regulation, it is the classic universal linear regulator for bench supplies and adjustable power sources.","working_principle":"The LM317T-DG operates as described in the product overview. Key subsystems include the input stage, processing\/gain stage, output stage, and protection circuitry as detailed in the datasheet.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>ADJ<\/td>Input<\/td>Adjust terminal (connect resistor divider)<\/td><\/tr>
      2<\/td>VOUT<\/td>Output<\/td>Regulated output<\/td><\/tr>
      3<\/td>VIN<\/td>Input<\/td>Unregulated input (up to 40V)<\/td><\/tr>
      Tab<\/td>VOUT<\/td>Output<\/td>Output (connected to pin 2)<\/td><\/tr><\/table>","application_scenarios":"
      • Adjustable bench power supplies<\/li>
      • Battery charger circuits<\/li>
      • Constant current regulators<\/li>
      • DC-DC post-regulation<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Package<\/th>Notes<\/th><\/tr>
        LM317T<\/td>TI<\/td>TO-220-3<\/td>TI version<\/td><\/tr>
        LM317AT<\/td>onsemi<\/td>TO-220-3<\/td>Higher accuracy version<\/td><\/tr>
        LM337T<\/td>onsemi<\/td>TO-220-3<\/td>Negative adjustable version<\/td><\/tr>
        LM350T<\/td>onsemi<\/td>TO-220-3<\/td>3A higher current version<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5528","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=5528"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5528\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=5528"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=5528"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=5528"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=5528"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}