{"id":10533,"date":"2026-07-20T05:05:28","date_gmt":"2026-07-20T05:05:28","guid":{"rendered":"https:\/\/ic-vendor.com\/lnk3294g-tl\/"},"modified":"2026-07-20T05:05:28","modified_gmt":"2026-07-20T05:05:28","slug":"lnk3294g-tl","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/lnk3294g-tl\/","title":{"rendered":"LNK3294G-TL"},"content":{"rendered":"

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

The Power Integrations LNK3294G-TL is a LinkSwitch-TN2 series offline switcher IC with an integrated 900V power MOSFET, designed for non-isolated AC\/DC power supplies. It supports buck, buck-boost, and flyback topologies with comprehensive system-level protection in an SMD-8C package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Series<\/td>\nLinkSwitch-TN2<\/td>\n<\/tr>\n
Breakdown Voltage<\/td>\n900 V<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n85 VAC to 265 VAC<\/td>\n<\/tr>\n
Output Current (CCM, 230V)<\/td>\n170 mA<\/td>\n<\/tr>\n
Output Current (MDCM, 230V)<\/td>\n120 mA<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n66 kHz<\/td>\n<\/tr>\n
Max Duty Cycle<\/td>\n72%<\/td>\n<\/tr>\n
\u62d3\u6251\u7ed3\u6784<\/td>\nBuck, Buck-Boost, Flyback<\/td>\n<\/tr>\n
Isolation<\/td>\nNon-Isolated<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to +150 C (TJ)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSMD-8C (8-SMD, 7 Leads, Gull Wing)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Integrated 900V power MOSFET for industrial safety margin<\/li>\n
  • Comprehensive protection: OVP, OVL, OTP, short-circuit, open-loop, overload<\/li>\n
  • Standby supply current less than 100 uA<\/li>\n
  • No-load consumption below 30 mW with external bias<\/li>\n
  • Frequency jittering reduces EMI filter complexity<\/li>\n
  • Selectable current limit modes via BYPASS pin capacitor<\/li>\n
  • Extended creepage between DRAIN and other pins improves reliability<\/li>\n<\/ul>\n

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

      Product Overview The Power Integrations LNK3294G-TL is a LinkSwitch-TN2 series offline switcher IC with an integrated 900V power MOSFET, designed for non-isolated AC\/DC power supplies. It supports buck, buck-boost, and flyback topologies with comprehensive system-level protection in an SMD-8C package. Key Specifications Series LinkSwitch-TN2 Breakdown Voltage 900 V Input Voltage Range 85 VAC to 265 […]<\/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":[1837],"chip_brand":[206],"class_list":["post-10533","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","tag-lnk3294g-tl","chip_brand-power-integrations"],"acf":{"brief_explanation":"900V LinkSwitch-TN2 offline switcher IC, 170mA output, 66kHz, buck\/buck-boost\/flyback, SMD-8C","date_code":"","package_case":"SMD-8C (8-SMD, 7 Leads, Gull Wing) 9.83 x 6.6 mm","in_stock":4287,"datasheet":"https:\/\/www.power.com\/products\/linkswitch\/linkswitch-tn2","price":"$0.93 @ 1ku","product_introduction":"The Power Integrations LNK3294G-TL is a member of the LinkSwitch-TN2 family of ICs for non-isolated off-line power supplies. It provides dramatically improved performance compared to traditional linear or cap-dropper solutions. The device integrates a 900V power MOSFET, oscillator, on\/off control for highest efficiency at light load, a high-voltage switched current source for self-biasing, frequency jittering, fast cycle-by-cycle current limit, hysteretic thermal shutdown, and output and input overvoltage protection circuitry onto a monolithic IC. It supports buck, buck-boost, and flyback converter topologies and consumes very little current in standby, meeting all no-load and standby specifications worldwide.","working_principle":"The LNK3294G-TL integrates a 900V power MOSFET and a control IC on a single monolithic die. The device uses primary-side on\/off control to regulate the output, eliminating the need for an optocoupler or secondary-side feedback circuit. The high-voltage switched current source self-biases the IC from the DRAIN pin, requiring no bias winding. On each switching cycle, the internal oscillator drives the MOSFET at 66 kHz with frequency jittering to reduce EMI. The on\/off control scheme enables or disables switching cycles based on the feedback signal, maintaining high efficiency across a wide load range. Protection circuits including cycle-by-cycle current limit, hysteretic thermal shutdown (135-150 degC), output overvoltage protection, and input overvoltage protection ensure safe operation under fault conditions. The BYPASS pin capacitor value selects between two current limit modes for design flexibility.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>DRAIN<\/td>Power<\/td>High-voltage power MOSFET drain; also provides startup bias current<\/td><\/tr>\n
      2<\/td>BYPASS<\/td>Power<\/td>Internal supply bypass pin; capacitor value selects current limit mode<\/td><\/tr>\n
      3<\/td>FB<\/td>Input<\/td>Feedback input; receives signal from output via resistive divider or optocoupler<\/td><\/tr>\n
      4<\/td>SOURCE<\/td>Power<\/td>Power MOSFET source; primary-side ground reference<\/td><\/tr>\n
      5-7<\/td>SOURCE<\/td>Power<\/td>Additional source pins for thermal dissipation<\/td><\/tr>\n
      8<\/td>DRAIN<\/td>Power<\/td>Additional drain pin for high-voltage connection<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Smart LED driver power supplies with high reliability requirements<\/li>\n
      • Industrial control system non-isolated power supplies<\/li>\n
      • IoT and home automation sensor nodes<\/li>\n
      • Appliance auxiliary power supplies replacing linear transformers<\/li>\n
      • Energy metering and smart meter power supplies<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        Power Integrations<\/td>LNK3294P-TL<\/td>DIP-8<\/td>Through-hole variant, same specs<\/td><\/tr>\n
        Power Integrations<\/td>LNK3204D-TL<\/td>SMD-8C<\/td>725V variant, lower breakdown<\/td><\/tr>\n
        Power Integrations<\/td>LNK3208G-TL<\/td>SMD-8C<\/td>725V, higher output current<\/td><\/tr>\n
        onsemi<\/td>NCP1014<\/td>SOT-223<\/td>Similar monolithic switcher, different architecture<\/td><\/tr>\n
        STMicroelectronics<\/td>VIPer12A<\/td>SO-8<\/td>Similar offline switcher IC<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10533","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=10533"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10533\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10533"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10533"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}