{"id":8054,"date":"2026-06-28T08:48:22","date_gmt":"2026-06-28T08:48:22","guid":{"rendered":"https:\/\/materialparts.com\/lt4363ide-2trpbf\/"},"modified":"2026-06-28T11:35:14","modified_gmt":"2026-06-28T11:35:14","slug":"lt4363ide-2trpbf","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/lt4363ide-2trpbf\/","title":{"rendered":"LT4363IDE-2#TRPBF"},"content":{"rendered":"<h2>LT4363IDE-2#TRPBF Overview<\/h2>\n<p>The LT4363IDE-2#TRPBF is a high voltage surge stopper from Analog Devices, operating voltage 4V-56V, with integrated reverse input protection, adjustable current limiting, external N-channel MOSFET, in a DFN-14 package.<\/p>\n<h3>\u4e3b\u8981\u529f\u80fd<\/h3>\n<ul>\n<li>Operating voltage: 4V-56V<\/li>\n<li>Adjustable current limiting<\/li>\n<li>Reverse input protection<\/li>\n<li>UV\/OV lockout<\/li>\n<li>Fault timer<\/li>\n<li>Supply current: 2mA<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>LT4363IDE-2#TRPBF Overview The LT4363IDE-2#TRPBF is a high voltage surge stopper from Analog Devices, operating voltage 4V-56V, with integrated reverse input protection, adjustable current limiting, external N-channel MOSFET, in a DFN-14 package. Key Features Operating voltage: 4V-56V Adjustable current limiting Reverse input protection UV\/OV lockout Fault timer Supply current: 2mA<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,29],"tags":[],"chip_brand":[165],"class_list":["post-8054","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-adi"],"acf":{"brief_explanation":"2.5A surge stopper, 4-80V input, SOIC-8","date_code":"","package_case":"SOIC-8 (5.00 x 4.00 x 1.50 mm)","in_stock":5910,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/4363fb.pdf","price":"$5.68 @ 1ku","product_introduction":"The LT4363IDE-2#TRPBF is a high-voltage surge stopper with current limit from Analog Devices, operating from 4 V to 80 V input in a 12-lead DFN (4 mm x 3 mm) package. It protects loads from high-voltage transients by controlling an external N-channel MOSFET to regulate the output to a safe level during overvoltage events. The -2 variant features automatic retry with less than 1 percent duty cycle after fault clearing. With reverse input protection to -60 V, adjustable fault timer, and UV\/OV comparators, it is ideal for automotive load dump, hot swap, and industrial surge protection.","working_principle":"The LT4363IDE-2 monitors the input voltage through the VCC pin and controls an external N-channel MOSFET via the GATE pin. During normal operation, the GATE is driven above the source to fully enhance the MOSFET. When an overvoltage transient occurs, the feedback (FB) pin voltage exceeds its threshold, and the error amplifier reduces the GATE drive to regulate the output at the clamped voltage level, allowing the load to continue operating. If the voltage drop between SNS and OUT exceeds 50 mV (overcurrent), an internal amplifier limits the sense voltage and starts a fault timer inversely proportional to MOSFET stress. If the timer expires, the FLT pin pulls low and the MOSFET turns off. The -2 variant automatically retries after a cool-down period with less than 1 percent duty cycle. The UV and OV comparators monitor input undervoltage and overvoltage conditions independently.","pin_description":"<table><tr><th>Pin<\/th><th>Name<\/th><th>Description<\/th><\/tr><tr><td>1<\/td><td>FB<\/td><td>Feedback; connects to output voltage divider to set clamp voltage<\/td><\/tr><tr><td>2<\/td><td>OUT<\/td><td>Output sense; monitors MOSFET source voltage<\/td><\/tr><tr><td>3<\/td><td>SNS<\/td><td>Current sense; connects to sense resistor for overcurrent detection<\/td><\/tr><tr><td>4<\/td><td>GATE<\/td><td>Gate drive output; drives external N-channel MOSFET<\/td><\/tr><tr><td>5<\/td><td>VCC<\/td><td>Input supply (4 V to 80 V); also input voltage monitor<\/td><\/tr><tr><td>6<\/td><td>SHDN<\/td><td>Shutdown; pull low to disable, withstands -60 V to 100 V<\/td><\/tr><tr><td>7<\/td><td>OV<\/td><td>Overvoltage comparator input; adjustable threshold<\/td><\/tr><tr><td>8<\/td><td>NC<\/td><td>No connect<\/td><\/tr><tr><td>9<\/td><td>GND<\/td><td>Ground<\/td><\/tr><tr><td>10<\/td><td>FLT<\/td><td>Fault output; active-low open-drain, pulls low before shutdown<\/td><\/tr><tr><td>11<\/td><td>ENOUT<\/td><td>Enable output; indicates MOSFET gate is being driven<\/td><\/tr><tr><td>12<\/td><td>TMR<\/td><td>Timer; connect capacitor to GND to set fault timeout<\/td><\/tr><tr><td>13<\/td><td>GND(EP)<\/td><td>Exposed pad; connect to PCB ground plane<\/td><\/tr><\/table>","application_scenarios":"<ul><li><strong>Automotive Load Dump Protection<\/strong>: Clamping 80 V load dump transients on 12 V or 24 V vehicle bus to safe levels<\/li><li><strong>Hot Swap\/Live Insertion<\/strong>: Inrush current limiting and short-circuit protection for pluggable modules and blade servers<\/li><li><strong>Industrial 24 V\/48 V Systems<\/strong>: Surge protection for factory automation and process control equipment<\/li><li><strong>Avionic Power Protection<\/strong>: Meeting DO-160 surge requirements for aircraft electronic systems<\/li><li><strong>Intrinsic Safety<\/strong>: Current and voltage limiting for hazardous environment electronics per IEC Ex standards<\/li><\/ul>","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>VIN<\/th><th>Fault Mode<\/th><th>Package<\/th><th>Notes<\/th><\/tr><tr><td>LT4363IMS-2#TRPBF<\/td><td>Analog Devices<\/td><td>4-80 V<\/td><td>Auto retry<\/td><td>MSOP-12<\/td><td>MSOP variant<\/td><\/tr><tr><td>LT4363HS-2#TRPBF<\/td><td>Analog Devices<\/td><td>4-80 V<\/td><td>Auto retry<\/td><td>SOIC-16<\/td><td>Wide temp (-40 to 125 C)<\/td><\/tr><tr><td>LT4363IDE-1#TRPBF<\/td><td>Analog Devices<\/td><td>4-80 V<\/td><td>Retry<\/td><td>DFN-12<\/td><td>Retry variant, same package<\/td><\/tr><tr><td>LTC4366<\/td><td>Analog Devices<\/td><td>9-500 V<\/td><td>Latchoff<\/td><td>MSOP-12<\/td><td>Higher voltage version<\/td><\/tr><tr><td>TPS2595<\/td><td>Texas Instruments<\/td><td>4.5-65 V<\/td><td>Auto retry<\/td><td>VSON-12<\/td><td>Integrated FET eFuse<\/td><\/tr><\/table>\n<p>LT4363IDE-2 is a surge stopper from ADI in DFN-12 (4x3mm). The LT4363-1 version provides automatic retry after fault (vs. latchoff for -2). The LT4356IMS-3 offers similar surge stopping with latchoff in MSOP-10. The TPS2595 from TI provides eFuse with overvoltage protection in VSSOP-10 for lower voltage applications. The MAX16141 from ADI\/Maxim offers overvoltage and reverse polarity protection in TDFN-8. For automotive ISO 7637 compliance, the LT4363-2 with external MOSFET provides robust 100V+ transient protection.<\/p>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8054","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=8054"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8054\/revisions"}],"predecessor-version":[{"id":8077,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8054\/revisions\/8077"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=8054"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=8054"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=8054"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=8054"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}