{"id":2108,"date":"2026-05-14T03:40:10","date_gmt":"2026-05-14T03:40:10","guid":{"rendered":"https:\/\/materialparts.com\/lt3759emsepbf\/"},"modified":"2026-05-15T08:32:44","modified_gmt":"2026-05-15T08:32:44","slug":"lt3759emsepbf","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/lt3759emsepbf\/","title":{"rendered":"LT3759EMSE#PBF"},"content":{"rendered":"

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

LT3759EMSE#PBF \u662f Analog Devices\uff08\u539f\u51cc\u529b\u5c14\u7279\u516c\u53f8\uff09\u7684\u4e00\u6b3e\u5bbd\u8f93\u5165\u7535\u538b\u8303\u56f4\u7535\u6d41\u6a21\u5f0f DC\/DC \u63a7\u5236\u5668\u3002\u5b83\u53ef\u5728 1.6 V \u81f3 42 V \u8f93\u5165\u7535\u538b\u8303\u56f4\u5185\u5de5\u4f5c\uff0c\u53ef\u914d\u7f6e\u4e3a\u5347\u538b\u3001SEPIC \u6216\u53cd\u76f8\uff08\u53cd\u6fc0\u5f0f\uff09\u8f6c\u6362\u5668\u3002\u72ec\u7279\u7684\u5355 FBX \u53cd\u9988\u5f15\u811a\u53ef\u5bf9\u6b63\u6216\u8d1f\u8f93\u51fa\u7535\u538b\u8fdb\u884c\u7f16\u7a0b\u3002\u5b83\u901a\u8fc7\u5185\u90e8 LDO \u9a71\u52a8\u5916\u90e8 N \u6c9f\u9053 MOSFET\uff0c\u63d0\u4f9b\u9ad8\u8fbe 4.75 V \u7684\u6805\u6781\u9a71\u52a8\u7535\u538b\u3002\u5f00\u5173\u9891\u7387\u53ef\u7f16\u7a0b\u4e3a 100 kHz \u81f3 1 MHz\uff0c\u5177\u6709\u5916\u90e8\u540c\u6b65\u529f\u80fd\u3002.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u8f93\u5165\u7535\u538b<\/td>\n1.6 V \u81f3 42 V<\/td>\n<\/tr>\n
\u62d3\u6251\u7ed3\u6784<\/td>\n\u5347\u538b \/ SEPIC \/ \u53cd\u76f8\uff08\u53cd\u6fc0\u5f0f\uff09<\/td>\n<\/tr>\n
\u63a7\u5236\u6a21\u5f0f<\/td>\n\u7535\u6d41\u6a21\u5f0f<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n100 kHz \u81f3 1 MHz\uff08\u5916\u90e8\u7535\u963b\u5668\uff09<\/td>\n<\/tr>\n
\u8f93\u51fa\u914d\u7f6e<\/td>\n\u6b63\u6781\u6216\u8d1f\u6781\uff08\u5355\u4e2a FBX \u5f15\u811a\uff09<\/td>\n<\/tr>\n
\u611f\u5e94\u9608\u503c<\/td>\n50 mV\uff08\u7cbe\u786e\uff09<\/td>\n<\/tr>\n
\u5185\u90e8 LDO<\/td>\nINTVCC \u9ad8\u8fbe 4.75 V \u6805\u6781\u9a71\u52a8\u7535\u6e90<\/td>\n<\/tr>\n
PGOOD<\/td>\n\u4f4e\u7535\u5e73\u5f00\u6f0f\u8f93\u51fa<\/td>\n<\/tr>\n
\u5173\u673a\u7535\u6d41<\/td>\n<1 \u03bcA<\/td>\n<\/tr>\n
\u64cd\u4f5c IQ<\/td>\n450 \u03bcA typ @ VIN = 12 V<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 \u00b0C \u81f3 +125 \u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nMSOP-12 \u88f8\u9732\u710a\u76d8\uff083.0 \u6beb\u7c73\u5bbd\uff09<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • \u8d85\u5bbd 1.6 V \u81f3 42 V \u8f93\u5165\u8303\u56f4\uff0c\u9002\u7528\u4e8e\u7535\u6c60\u548c\u6c7d\u8f66\u7cfb\u7edf<\/li>\n
  • \u5355\u4e2a FBX \u5f15\u811a\u53ef\u7f16\u7a0b\u6b63\u6216\u8d1f\u8f93\u51fa\u7535\u538b<\/li>\n
  • \u53ef\u7f16\u7a0b\u5f00\u5173\u9891\u7387\uff0c\u5916\u90e8\u65f6\u949f\u540c\u6b65<\/li>\n
  • PGOOD \u8f93\u51fa\u7528\u4e8e\u76d1\u6d4b\u7535\u6e90\u72b6\u6001<\/li>\n
  • \u53ef\u7f16\u7a0b\u8f6f\u542f\u52a8\u548c\u9891\u7387\u6298\u8fd4\uff0c\u7528\u4e8e\u542f\u52a8\u548c\u77ed\u8def\u4fdd\u62a4<\/li>\n
  • \u5e26\u6ede\u540e\u7684\u53ef\u7f16\u7a0b\u8f93\u5165 UVLO<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • \u7535\u4fe1\u548c\u5de5\u4e1a\u5347\u538b\/SEPIC\/\u9006\u53d8\u8f6c\u6362\u5668<\/li>\n
    • \u5206\u5e03\u5f0f\u7535\u6e90\u7cfb\u7edf<\/li>\n
    • \u4fbf\u643a\u5f0f\u7535\u5b50\u8bbe\u5907<\/li>\n
    • \u6c7d\u8f66\u52a8\u529b\u7cfb\u7edf<\/li>\n
    • \u6b63\u6216\u8d1f\u8f93\u51fa\u7535\u6e90<\/li>\n
    • 48 V \u7535\u4fe1\u7535\u6e90<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LT3759EMSE#PBF is a wide input voltage range current-mode DC\/DC controller from Analog Devices (formerly Linear Technology). Operating from 1.6 V to 42 V input, it can be configured as a Boost, SEPIC, or Inverting (Flyback) converter. A unique single FBX feedback pin programs either positive or negative output voltage. It drives an […]<\/p>\n","protected":false},"author":2,"featured_media":2182,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[178],"class_list":["post-2108","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-analog-devices"],"acf":{"brief_explanation":"Wide-input Boost\/SEPIC\/Inverting DC\/DC controller, 1.6-42V input, 100kHz-1MHz prog. freq, current-mode, PGOOD output, MSOP-12 EP, -40C to +125C.","date_code":"","package_case":"MSOP-12 with Exposed Pad (3.0mm width)","in_stock":4286,"datasheet":"https:\/\/www.analog.com\/en\/products\/lt3759.html","price":"$3.27 @ 1ku","product_introduction":"The LT3759EMSE#PBF is a wide input voltage range current-mode DC\/DC controller from Analog Devices (formerly Linear Technology). It operates from 1.6V to 42V input and can be configured as Boost, SEPIC, or Inverting (Flyback) topology. A single FBX feedback pin programs positive or negative output voltage. It drives an external N-channel MOSFET with internal LDO providing up to 4.75V gate drive. Switching frequency is programmable from 100kHz to 1MHz with external sync capability. Features include PGOOD output, programmable soft-start, frequency foldback, and <1uA shutdown current.","working_principle":"The LT3759 uses fixed-frequency current-mode control. The error amplifier compares the FBX pin feedback with an internal reference, generating an error signal for the PWM comparator. A current-sense amplifier monitors external MOSFET current through the SENSE pin at a precise 50mV threshold for cycle-by-cycle current limiting. An internal LDO (INTVCC) powers the gate driver from VIN or DRIVE pin, supplying up to 4.75V. The FBX window comparator monitors output voltage and asserts PGOOD (active-low open-drain) when out of range. The SS pin sets startup ramp time; frequency foldback limits inductor current during output short-circuit. RT pin sets switching frequency; SYNC accepts external clock.","pin_description":"\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
      Pin<\/th>\r\nMSOP-12<\/th>\r\nFunction<\/th>\r\nDescription<\/th>\r\n<\/tr>\r\n
      1<\/td>\r\nSS<\/td>\r\nSoft-Start<\/td>\r\nExternal cap sets startup time<\/td>\r\n<\/tr>\r\n
      2<\/td>\r\nRT<\/td>\r\nFrequency Set<\/td>\r\nResistor sets 100kHz~1MHz<\/td>\r\n<\/tr>\r\n
      3<\/td>\r\nSYNC<\/td>\r\nSynchronization<\/td>\r\nExternal clock input<\/td>\r\n<\/tr>\r\n
      4<\/td>\r\nEN\/UVLO<\/td>\r\nEnable \/ UVLO<\/td>\r\nProgrammable threshold with hysteresis<\/td>\r\n<\/tr>\r\n
      5<\/td>\r\nVIN<\/td>\r\nInput Supply<\/td>\r\n1.6V~42V<\/td>\r\n<\/tr>\r\n
      6<\/td>\r\nINTVCC<\/td>\r\nInternal LDO Output<\/td>\r\nGate drive supply; max 4.75V<\/td>\r\n<\/tr>\r\n
      7<\/td>\r\nDRIVE<\/td>\r\nDrive Supply Input<\/td>\r\nINTVCC source: VIN or DRIVE<\/td>\r\n<\/tr>\r\n
      8<\/td>\r\nGATE<\/td>\r\nGate Drive Output<\/td>\r\nDrives external N-ch MOSFET<\/td>\r\n<\/tr>\r\n
      9<\/td>\r\nSENSE<\/td>\r\nCurrent Sense<\/td>\r\n50mV precise threshold<\/td>\r\n<\/tr>\r\n
      10<\/td>\r\nGND<\/td>\r\nGround<\/td>\r\n-<\/td>\r\n<\/tr>\r\n
      11<\/td>\r\nFBX<\/td>\r\nFeedback Input<\/td>\r\nSingle pin for + or - output programming<\/td>\r\n<\/tr>\r\n
      12<\/td>\r\nPGOOD<\/td>\r\nPower Good<\/td>\r\nActive-low open-drain output<\/td>\r\n<\/tr>\r\n
      EP<\/td>\r\nGND<\/td>\r\nExposed Pad<\/td>\r\nThermal and electrical GND<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>","application_scenarios":"
        \r\n \t
      • Telecom and industrial Boost\/SEPIC\/Inverting converters<\/li>\r\n \t
      • Distributed power systems<\/li>\r\n \t
      • Portable electronic devices<\/li>\r\n \t
      • Automotive power systems<\/li>\r\n \t
      • Positive or negative output power supplies<\/li>\r\n \t
      • 48V telecom power<\/li>\r\n<\/ul>","alternative_models":"\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
        Model<\/th>\r\nType<\/th>\r\nNotes<\/th>\r\n<\/tr>\r\n
        LT3759EMSE#TRPBF<\/td>\r\nSame part<\/td>\r\nTape and reel packaging<\/td>\r\n<\/tr>\r\n
        LT3759IMSE#PBF<\/td>\r\nSame family<\/td>\r\nIndustrial grade -40C~+125C<\/td>\r\n<\/tr>\r\n
        LT3757<\/td>\r\nFunctional equiv.<\/td>\r\nEarlier LTC boost\/buck-boost controller<\/td>\r\n<\/tr>\r\n
        LT8330<\/td>\r\nFunctional equiv.<\/td>\r\nLTC internal-switch boost; 1A; 3-40V<\/td>\r\n<\/tr>\r\n
        LM5155<\/td>\r\nFunctional equiv.<\/td>\r\nTI Boost\/SEPIC controller; 42V input<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2108","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=2108"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2108\/revisions"}],"predecessor-version":[{"id":2183,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2108\/revisions\/2183"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media\/2182"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=2108"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=2108"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=2108"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=2108"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}