{"id":2514,"date":"2026-05-22T03:29:00","date_gmt":"2026-05-22T03:29:00","guid":{"rendered":"https:\/\/materialparts.com\/l7815cv-dg\/"},"modified":"2026-05-22T03:29:00","modified_gmt":"2026-05-22T03:29:00","slug":"l7815cv-dg","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/l7815cv-dg\/","title":{"rendered":"L7815CV-DG"},"content":{"rendered":"

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

The L7815CV-DG is a positive voltage regulator from STMicroelectronics providing a fixed 15V output at up to 1.5A. Part of the L78 series, it features internal current limiting, thermal shutdown, and safe area protection, making it robust against overload and fault conditions. The device is available in a TO-220 package and is widely used in power supply and voltage regulation circuits.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Output Voltage<\/td>\n15V (fixed)<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n1.5A<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n17.5V to 35V<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n2V typical<\/td>\n<\/tr>\n
Line Regulation<\/td>\n12mV typical<\/td>\n<\/tr>\n
Load Regulation<\/td>\n25mV typical<\/td>\n<\/tr>\n
Ripple Rejection<\/td>\n60dB typical<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n0C to +125C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nTO-220<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Fixed 15V positive output voltage<\/li>\n
  • 1.5A output current capability<\/li>\n
  • Internal thermal overload protection<\/li>\n
  • Short-circuit current limiting<\/li>\n
  • Output transistor safe area protection<\/li>\n
  • No external components required for basic operation<\/li>\n
  • High ripple rejection ratio<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Power supply voltage regulation<\/li>\n
    • Industrial control systems<\/li>\n
    • Audio amplifier power supplies<\/li>\n
    • Motor driver supply regulation<\/li>\n
    • General purpose 15V power source<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The L7815CV-DG is a positive voltage regulator from STMicroelectronics providing a fixed 15V output at up to 1.5A. Part of the L78 series, it features internal current limiting, thermal shutdown, and safe area protection, making it robust against overload and fault conditions. The device is available in a TO-220 package and is widely […]<\/p>\n","protected":false},"author":2,"featured_media":2702,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,32],"tags":[],"chip_brand":[142],"class_list":["post-2514","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-st"],"acf":{"brief_explanation":"15V Fixed Positive Voltage Regulator, 1.5A output, TO-220","date_code":"","package_case":"TO-220 (10.4 x 4.6 x 15.5 mm)","in_stock":12850,"datasheet":"https:\/\/www.st.com\/en\/power-management\/l78.html","price":"$0.61 @ 1ku","product_introduction":"The L7815CV-DG from STMicroelectronics is a positive fixed-voltage regulator in the TO-220 package providing a regulated 15V output at currents up to 1.5A. Part of the industry-standard L78 series, it incorporates internal current limiting, thermal shutdown, and safe area protection for robust operation under fault conditions. The device requires minimal external components for operation and offers excellent ripple rejection, making it a reliable choice for linear power supply designs.","working_principle":"The L7815CV-DG operates as a series-pass linear regulator. The input voltage is applied through a series pass transistor controlled by a feedback loop. An internal voltage reference and error amplifier compare a fraction of the output voltage with the reference, adjusting the pass transistor to maintain a constant 15V output. The internal current limiting circuit restricts output current during overload conditions. The thermal shutdown circuit disables the output when the junction temperature exceeds approximately 150C, preventing device damage. Safe area protection limits the pass transistor power dissipation.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>INPUT<\/td>Power<\/td>Unregulated input voltage (17.5-35V)<\/td><\/tr>
      2<\/td>GND<\/td>Power<\/td>Common ground<\/td><\/tr>
      3<\/td>OUTPUT<\/td>Output<\/td>Regulated 15V output<\/td><\/tr><\/table>","application_scenarios":"
      • Linear power supply for 15V rail generation<\/li>
      • Industrial control and automation 15V supply<\/li>
      • Audio amplifier regulated power supplies<\/li>\n
      • Motor driver and solenoid supply regulation<\/li>
      • General purpose bench and embedded 15V power source<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        onsemi<\/td>MC7815ACTG<\/td>TO-220<\/td>Direct equivalent, tight tolerance<\/td><\/tr>
        Texas Instruments<\/td>LM7815CT<\/td>TO-220<\/td>Direct equivalent<\/td><\/tr>
        Infineon<\/td>ISA7815A<\/td>TO-220<\/td>Automotive qualified version<\/td><\/tr>
        STMicroelectronics<\/td>L7815CD2T-TR<\/td>D2PAK<\/td>SMD version<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2514","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=2514"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2514\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media\/2702"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=2514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=2514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=2514"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=2514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}