{"id":5219,"date":"2026-06-09T10:13:28","date_gmt":"2026-06-09T10:13:28","guid":{"rendered":"https:\/\/materialparts.com\/lt1170iqpbf\/"},"modified":"2026-06-09T10:13:28","modified_gmt":"2026-06-09T10:13:28","slug":"lt1170iqpbf","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/lt1170iqpbf\/","title":{"rendered":"LT1170IQ#PBF"},"content":{"rendered":"

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

LT1170IQ#PBF from ADI is a 5A offline\/flyback switching regulator with 3-60V input. 100kHz fixed frequency. Current mode control. TO-220-5. IQ suffix = industrial temp -40C to +125C.<\/p>\n

\u5de5\u4f5c\u539f\u7406<\/h2>\n

Current mode PWM controller with integrated 5A NPN power switch. 3-60V input range. 100kHz switching. Error amplifier drives PWM comparator against slope-compensated current sense. Flyback, boost, SEPIC, and forward topologies supported.<\/p>\n

Pin Description<\/h2>\n\n\n\n\n\n\n\n
\u9488\u811a<\/th>\n\u540d\u79f0<\/th>\n\u529f\u80fd<\/th>\n<\/tr>\n
1<\/td>\n\u63a5\u5730<\/td>\n\u5730\u9762<\/td>\n<\/tr>\n
2<\/td>\nFB<\/td>\nFeedback (1.244V ref)<\/td>\n<\/tr>\n
3<\/td>\nVC<\/td>\nError amp output\/comp<\/td>\n<\/tr>\n
4<\/td>\nVIN<\/td>\n3-60V input<\/td>\n<\/tr>\n
5<\/td>\nSW<\/td>\n5A switch output<\/td>\n<\/tr>\n<\/table>\n

\u5e94\u7528<\/h2>\n
    \n
  • Isolated flyback converters<\/li>\n
  • Boost regulators<\/li>\n
  • Battery chargers<\/li>\n
  • SEPIC converters<\/li>\n<\/ul>\n

    Alternative Models<\/h2>\n\n\n\n\n
    \u5236\u9020\u5546<\/th>\n\u90e8\u4ef6\u7f16\u53f7<\/th>\n\u8bf4\u660e<\/th>\n<\/tr>\n
    ADI<\/td>\nLT1171IQ#PBF<\/td>\n2.5A version<\/td>\n<\/tr>\n
    ADI<\/td>\nLT1172IQ#PBF<\/td>\n1.5A version<\/td>\n<\/tr>\n<\/table>","protected":false},"excerpt":{"rendered":"

    Product Overview LT1170IQ#PBF from ADI is a 5A offline\/flyback switching regulator with 3-60V input. 100kHz fixed frequency. Current mode control. TO-220-5. IQ suffix = industrial temp -40C to +125C. Working Principle Current mode PWM controller with integrated 5A NPN power switch. 3-60V input range. 100kHz switching. Error amplifier drives PWM comparator against slope-compensated current sense. […]<\/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":[31,13],"tags":[],"chip_brand":[165],"class_list":["post-5219","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"5A flyback\/boost regulator, 3-60V, TO-220-5","date_code":"","package_case":"TO-220-5 (10.4 x 9.1 x 4.7mm)","in_stock":3519,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/1170fa.pdf","price":"$8.50 @ 1ku","product_introduction":"LT1170IQ#PBF from ADI is a 5A offline\/flyback switching regulator with 3-60V input. 100kHz fixed frequency. Current mode control. TO-220-5. IQ suffix = industrial temp -40C to +125C.","working_principle":"Current mode PWM controller with integrated 5A NPN power switch. 3-60V input range. 100kHz switching. Error amplifier drives PWM comparator against slope-compensated current sense. Flyback, boost, SEPIC, and forward topologies supported.","pin_description":"
    Pin<\/th>Name<\/th>Function<\/th><\/tr>
    1<\/td>GND<\/td>Ground<\/td><\/tr>
    2<\/td>FB<\/td>Feedback (1.244V ref)<\/td><\/tr>
    3<\/td>VC<\/td>Error amp output\/comp<\/td><\/tr>
    4<\/td>VIN<\/td>3-60V input<\/td><\/tr>
    5<\/td>SW<\/td>5A switch output<\/td><\/tr><\/table>","application_scenarios":"
    • Isolated flyback converters<\/li>
    • Boost regulators<\/li>
    • Battery chargers<\/li>
    • SEPIC converters<\/li><\/ul>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Notes<\/th><\/tr>
      ADI<\/td>LT1171IQ#PBF<\/td>2.5A version<\/td><\/tr>
      ADI<\/td>LT1172IQ#PBF<\/td>1.5A version<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5219","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=5219"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5219\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5219"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5219"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5219"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}