{"id":5584,"date":"2026-06-11T02:52:58","date_gmt":"2026-06-11T02:52:58","guid":{"rendered":"https:\/\/materialparts.com\/lnk6666e\/"},"modified":"2026-06-12T09:11:24","modified_gmt":"2026-06-12T09:11:24","slug":"lnk6666e","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/lnk6666e\/","title":{"rendered":"LNK6666E"},"content":{"rendered":"

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

The LNK6666E from Power Integrations is an offline switcher IC for 17W power supplies operating from 85-265VAC with integrated 700V MOSFET and auto-restart protection.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n
\u5305\u88c5<\/td>\neSIP-7C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • See datasheet for complete specifications<\/li>\n
  • Industry-standard package<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial control<\/li>\n
    • Consumer electronics<\/li>\n
    • Communication equipment<\/li>\n
    • Automotive electronics<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LNK6666E from Power Integrations is an offline switcher IC for 17W power supplies operating from 85-265VAC with integrated 700V MOSFET and auto-restart protection. Key Specifications Package eSIP-7C Features See datasheet for complete specifications Industry-standard package Applications Industrial control Consumer electronics Communication equipment Automotive electronics<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,29],"tags":[],"chip_brand":[206],"class_list":["post-5584","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-power-integrations"],"acf":{"brief_explanation":"Offline switcher, 17W, 85-265VAC, eSIP-7C","date_code":"","package_case":"eSIP-7C","in_stock":8224,"datasheet":"https:\/\/www.power.com\/products\/linkzero-lp\/lnk6666e\/","price":"$1.80 @ 1ku","product_introduction":"The LNK6666E from Power Integrations is an offline switcher IC for 17W power supplies operating from 85-265VAC with integrated 700V MOSFET and auto-restart protection.","working_principle":"The LNK6666E is an offline switcher IC from Power Integrations in eSIP-7C (enhanced SIP, through-hole with integrated heat sink), designed for 17W flyback power supplies operating from 85-265VAC. It integrates a 700V N-channel power MOSFET, oscillator, PWM controller, and auto-restart protection in a single monolithic IC. The M (multi-function) pin serves three purposes: (1) Input voltage monitoring: a resistor from the rectified DC bus to M sets the UVLO\/OVLO thresholds; if the bus voltage drops below the undervoltage threshold (typically 85VAC equivalent), switching stops to prevent output drift; if it exceeds the overvoltage threshold (typically 300VAC), switching stops for surge protection; (2) Current limit programming: the M pin resistor value selects one of three current limit levels (low, medium, high), optimizing efficiency at different output power levels; (3) Remote on\/off: pulling M below 1V disables the device. The controller uses on\/off control: at light load, the switch skips cycles (burst mode), reducing switching losses and achieving less than 50mW no-load consumption. At full load, most switching cycles are enabled, and the switching frequency is approximately 132kHz. The BP pin capacitor value determines the auto-restart behavior: 0.1uF provides standard auto-restart (cycle on\/off at 1Hz during fault); 1uF enables cable dropout compensation (increases output voltage to compensate for cable resistance at high load). The eSIP-7C package provides enhanced thermal performance with an exposed copper heat sink, reducing thermal resistance to 45C\/W. The -E suffix specifies eSIP-7C package. Applications include: chargers, adapters, and standby power supplies.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>D<\/td>Power<\/td>Drain (connects to transformer primary, 700V MOSFET, 100mA peak)<\/td><\/tr>
      2<\/td>M<\/td>Input<\/td>Multi-function pin (undervoltage\/overvoltage detect, current limit select, on\/off control)<\/td><\/tr>
      3<\/td>S<\/td>Power<\/td>Source (primary return, internal MOSFET source, control ground)<\/td><\/tr>
      4<\/td>S<\/td>Power<\/td>Source (connect both source pins to primary return)<\/td><\/tr>
      5<\/td>NC<\/td>-<\/td>No connect (creepage between D and S)<\/td><\/tr>
      6<\/td>BP<\/td>Power<\/td>Bypass (internal 5.85V supply, 0.1uF cap sets auto-restart, 1uF sets cable dropout comp)<\/td><\/tr>
      7<\/td>FB<\/td>Input<\/td>Feedback (current from optocoupler controls output voltage)<\/td><\/tr><\/table>","application_scenarios":"
    • Industrial control<\/li>
    • Consumer electronics<\/li>
    • Communication equipment<\/li>
    • Automotive electronics<\/li>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
      Power Integrations<\/td>LNK6666E<\/td>eSIP-7C<\/td>Same device, PI brand<\/td><\/tr>
      Power Integrations<\/td>LNK6667E<\/td>eSIP-7C<\/td>Higher power version (20W)<\/td><\/tr>
      Power Integrations<\/td>LNK6665E<\/td>eSIP-7C<\/td>Lower power version (10W)<\/td><\/tr>
      Power Integrations<\/td>TNY290DG-TL<\/td>DIP-8<\/td>TinySwitch-4, 0-28W, similar class<\/td><\/tr>
      MPS<\/td>HK6285E<\/td>SOP-7<\/td>Offline switcher, alternative, 15W<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5584","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=5584"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5584\/revisions"}],"predecessor-version":[{"id":6168,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5584\/revisions\/6168"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5584"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5584"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5584"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5584"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}