{"id":5538,"date":"2026-06-11T02:51:30","date_gmt":"2026-06-11T02:51:30","guid":{"rendered":"https:\/\/materialparts.com\/lm337impx-nopb\/"},"modified":"2026-06-11T02:51:30","modified_gmt":"2026-06-11T02:51:30","slug":"lm337impx-nopb","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/lm337impx-nopb\/","title":{"rendered":"LM337IMPX\/NOPB"},"content":{"rendered":"

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

The LM337IMPX\/NOPB is a 1.5A 3-terminal adjustable negative voltage regulator from TI, output range -1.25V to -37V. Complement to the LM317 for dual-rail supplies with 77dB ripple rejection and internal protection.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n
\u8f93\u51fa<\/td>\n-1.25V~-37V Adj<\/td>\n<\/tr>\n
Current<\/td>\n1.5A<\/td>\n<\/tr>\n
Line Reg<\/td>\n0.01%\/V typ<\/td>\n<\/tr>\n
Load Reg<\/td>\n0.3% typ<\/td>\n<\/tr>\n
PSRR<\/td>\n77 dB<\/td>\n<\/tr>\n
Temp Coeff<\/td>\n50 ppm\/C<\/td>\n<\/tr>\n
Max VI-O<\/td>\n40V<\/td>\n<\/tr>\n
Temp<\/td>\n-40~125C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 1.5A output current<\/li>\n
  • Adjustable -1.25V to -37V<\/li>\n
  • 77dB ripple rejection<\/li>\n
  • Internal current limit and thermal shutdown<\/li>\n
  • Safe-area compensation<\/li>\n
  • Only 2 external resistors needed<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Dual-rail power supplies (with LM317)<\/li>\n
    • Op-amp negative rails<\/li>\n
    • IGBT gate drive negative supplies<\/li>\n
    • Industrial instrumentation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM337IMPX\/NOPB is a 1.5A 3-terminal adjustable negative voltage regulator from TI, output range -1.25V to -37V. Complement to the LM317 for dual-rail supplies with 77dB ripple rejection and internal protection. Key Specifications Output -1.25V~-37V Adj Current 1.5A Line Reg 0.01%\/V typ Load Reg 0.3% typ PSRR 77 dB Temp Coeff 50 ppm\/C […]<\/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-5538","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 negative LDO, -1.25V to -37V, 77dB ripple rejection","date_code":"","package_case":"SOT-223-4 (DCY, 6.7x3.7x1.7mm)","in_stock":2409,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm137.pdf","price":"$0.815 @ 1ku","product_introduction":"The LM337IMPX\/NOPB is a 1.5A 3-terminal adjustable negative voltage regulator from TI, output range -1.25V to -37V. Complement to the LM317 for dual-rail supplies with 77dB ripple rejection and internal protection.","working_principle":"Compares external resistor divider output to internal -1.25V reference between ADJ and OUT pins. Series pass transistor regulates output. Current limiting, thermal shutdown, and safe-area compensation protect under overload.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>ADJ<\/td>Adjust<\/td><\/tr>
      2<\/td>VOUT<\/td>Output<\/td><\/tr>
      3<\/td>VIN<\/td>Input<\/td><\/tr>
      4<\/td>Tab<\/td>VOUT<\/td><\/tr><\/table>","application_scenarios":"
    • Dual-rail power supplies (with LM317)<\/li>
    • Op-amp negative rails<\/li>
    • IGBT gate drive negative supplies<\/li>
    • Industrial instrumentation<\/li>","alternative_models":"
      Model<\/th>Brand<\/th>Diff<\/th><\/tr>
      LM337T\/NOPB<\/td>TI<\/td>TO-220<\/td><\/tr>
      LM137H<\/td>TI<\/td>Mil-spec -55~150C<\/td><\/tr>
      LT337<\/td>ADI<\/td>Lower noise<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5538","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=5538"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5538\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5538"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5538"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}