{"id":10545,"date":"2026-07-20T05:41:59","date_gmt":"2026-07-20T05:41:59","guid":{"rendered":"https:\/\/ic-vendor.com\/lnk3204d-tl-2\/"},"modified":"2026-07-20T05:41:59","modified_gmt":"2026-07-20T05:41:59","slug":"lnk3204d-tl-2","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/lnk3204d-tl-2\/","title":{"rendered":"LNK3204D-TL"},"content":{"rendered":"

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

The Power Integrations LNK3204D-TL is a LinkSwitch-TN2 series non-isolated offline switcher IC with a 725V integrated power MOSFET. It supports buck, buck-boost, and flyback topologies with a maximum output current of 170 mA in CCM mode, packaged in a compact SMD-8C surface-mount package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Series<\/td>\nLinkSwitch-TN2<\/td>\n<\/tr>\n
Breakdown Voltage<\/td>\n725 V<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n85 VAC to 265 VAC<\/td>\n<\/tr>\n
Output Current (CCM)<\/td>\n170 mA<\/td>\n<\/tr>\n
Output Voltage<\/td>\nUp to 50 V<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n66 kHz<\/td>\n<\/tr>\n
Max Duty Cycle<\/td>\n69%<\/td>\n<\/tr>\n
\u62d3\u6251\u7ed3\u6784<\/td>\nBuck, Buck-Boost, Flyback<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to +150 C (TJ)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSMD-8C (SOIC, 7 Pins)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Integrated 725V power MOSFET with excellent surge withstand<\/li>\n
  • EcoSmart technology for extremely energy efficient operation<\/li>\n
  • No-load consumption below 30 mW with external bias<\/li>\n
  • Standby supply current less than 100 uA<\/li>\n
  • Frequency jittering simplifies EMI filter design<\/li>\n
  • Comprehensive protection: OVP, OVL, OTP, short-circuit, overload<\/li>\n
  • Allows use of low-cost off-the-shelf inductors<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Appliance auxiliary power supplies<\/li>\n
    • Smart LED drivers<\/li>\n
    • Industrial control IoT devices<\/li>\n
    • Home and building automation<\/li>\n
    • Energy metering systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Power Integrations LNK3204D-TL is a LinkSwitch-TN2 series non-isolated offline switcher IC with a 725V integrated power MOSFET. It supports buck, buck-boost, and flyback topologies with a maximum output current of 170 mA in CCM mode, packaged in a compact SMD-8C surface-mount package. Key Specifications Series LinkSwitch-TN2 Breakdown Voltage 725 V 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":[31,13],"tags":[1838],"chip_brand":[206],"class_list":["post-10545","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","tag-lnk3204d-tl","chip_brand-power-integrations"],"acf":{"brief_explanation":"725V LinkSwitch-TN2 offline switcher, 170mA output, 66kHz, buck\/buck-boost\/flyback, SMD-8C","date_code":"","package_case":"SMD-8C (SOIC, 7 Pins) 4.9 x 1.65 mm","in_stock":6153,"datasheet":"https:\/\/www.power.com\/products\/linkswitch\/linkswitch-tn2","price":"$0.55 @ 1ku","product_introduction":"The Power Integrations LNK3204D-TL is a LinkSwitch-TN2 family IC for non-isolated off-line power supplies. It integrates a 725V power MOSFET, oscillator, on\/off control, high-voltage switched current source for self-biasing, frequency jittering, cycle-by-cycle current limit, hysteretic thermal shutdown, and output and input overvoltage protection on a monolithic IC. The device supports buck, buck-boost, and flyback topologies with up to 170 mA output current in CCM mode. It consumes very little current in standby, resulting in power supply designs that meet all no-load and standby specifications worldwide. The 725V MOSFET rating provides excellent surge withstand capability for consumer applications.","working_principle":"The LNK3204D-TL operates using primary-side on\/off control. The internal 725V power MOSFET switches at 66 kHz with frequency jittering to reduce EMI. A high-voltage switched current source provides self-biasing from the DRAIN pin, eliminating the need for a bias winding. The on\/off control scheme regulates output by enabling or disabling switching cycles based on the FB pin signal, maintaining high efficiency from full load to standby. The BYPASS pin capacitor selects between high and low current limit modes. Protection features include cycle-by-cycle current limiting, auto-restart for short-circuit and open-loop faults, output overvoltage protection, input overvoltage protection, and hysteretic thermal shutdown.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>DRAIN<\/td>Power<\/td>MOSFET drain; startup bias current source<\/td><\/tr>\n
      2<\/td>BYPASS<\/td>Power<\/td>Internal supply bypass; current limit mode selection<\/td><\/tr>\n
      3<\/td>FB<\/td>Input<\/td>Feedback input for output regulation<\/td><\/tr>\n
      4<\/td>SOURCE<\/td>Power<\/td>MOSFET source; ground reference<\/td><\/tr>\n
      5-7<\/td>SOURCE<\/td>Power<\/td>Additional source pins for heat sinking<\/td><\/tr>\n
      8<\/td>DRAIN<\/td>Power<\/td>Additional drain pin<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Appliance power supplies replacing linear and cap-dropper solutions<\/li>\n
      • Smart LED lighting drivers with standby requirements<\/li>\n
      • Industrial IoT sensor and control node power<\/li>\n
      • Home automation device auxiliary power<\/li>\n
      • Smart energy meter power supplies<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        Power Integrations<\/td>LNK3294G-TL<\/td>SMD-8C<\/td>900V variant for industrial margin<\/td><\/tr>\n
        Power Integrations<\/td>LNK3208G-TL<\/td>SMD-8C<\/td>725V, higher output current (775mA)<\/td><\/tr>\n
        Power Integrations<\/td>LNK3204P-TL<\/td>DIP-8<\/td>Through-hole variant<\/td><\/tr>\n
        onsemi<\/td>NCP1015<\/td>SOT-223<\/td>Similar monolithic switcher<\/td><\/tr>\n
        STMicroelectronics<\/td>VIPer06XS<\/td>SSO-10<\/td>Similar offline switcher<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10545","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=10545"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10545\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10545"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}