{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT3755EMSE-1#WPBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT3755EMSE-1WPBF","canonicalUrl":"https://icboms.com/analog-devices/LT3755EMSE-1WPBF","factsUrl":"https://icboms.com/api/mcp/products/LT3755EMSE-1%23WPBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT3755EMSE-1#WPBF, DC DC Controller, Automotive AEC-Q100, Dimming Analog/PWM, Topology Flyback/SEPIC/Buck/Boost, Frequency 100kHz~1MHz, 1 Output, No Internal Switch, Supply 4.5V~40V, -40°C~125°C, 16-MSOP-EP.","salesMarkdown":"## Automotive LED controller with flexible topology The Analog Devices LT3755EMSE-1#WPBF is a DC DC controller designed for driving high-power LEDs, qualified to AEC-Q100 for automotive applications. It operates as a constant-current, constant-voltage controller supporting buck, boost, SEPIC, and flyback topologies — a single part number that can handle multiple LED string configurations from a 4.5 V to 40 V supply rail. The controller drives an external N-channel MOSFET (no internal switch), so the output current is set by the external pass element and sense resistor, not limited by the IC package. ## Switching frequency and dimming flexibility The switching frequency is programmable from 100 kHz to 1 MHz via a single resistor, letting you trade inductor size against switching losses. For a compact automotive headlamp module, running at 1 MHz shrinks the magnetics; for a high-efficiency daytime-running-light design, 300 kHz cuts gate-drive losses. Dimming is supported in both analog and PWM modes — analog dimming adjusts the LED current linearly, while PWM dimming (via the PWM pin) gives a wide dimming ratio without color shift. ## Temperature grade and package Junction temperature range is -40°C to 125°C, covering under-hood and exterior lighting environments. The part comes in a 16-MSOP-EP (exposed pad) package — the thermal pad must be soldered to a copper plane for adequate heat transfer; without that via stitch, the junction temperature rises quickly above 400 mA continuous LED current. ## Lifecycle and sourcing The LT3755EMSE-1#WPBF carries an Active lifecycle status with ROHS3 compliance.","metaTitle":"LT3755EMSE-1#WPBF DC DC Controller, AEC-Q100, 100kHz-1MHz","metaDescription":"Analog Devices LT3755EMSE-1#WPBF DC DC LED controller, AEC-Q100 qualified, 4.5V-40V input, buck/boost/SEPIC/flyback, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"DC DC Controller","Series":"Automotive, AEC-Q100","Dimming":"Analog, PWM","Package":"Tube","Topology":"Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost)","Frequency":"100kHz ~ 1MHz","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"16-TFSOP (0.118\\\", 3.00mm Width) Exposed Pad","lifecycle_stage":"eol_hot","Number of Outputs":"1","Internal Switch(s)":"No","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Supply (Max)":"40V","Voltage - Supply (Min)":"4.5V","Supplier Device Package":"16-MSOP-EP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.21","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.21000","currency":"USD"},{"qty":10,"price":"$8.31800","currency":"USD"},{"qty":25,"price":"$7.93160","currency":"USD"},{"qty":100,"price":"$6.88680","currency":"USD"},{"qty":250,"price":"$6.57728","currency":"USD"},{"qty":500,"price":"$5.99696","currency":"USD"},{"qty":1000,"price":"$5.47500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/83205d0a0ffb9359a0bfdbe7593dc850.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LT3755EMSE-1#WPBF automotive qualified?","answer":"Yes, it is part of the Automotive series and is AEC-Q100 qualified, making it suitable for automotive lighting applications such as headlamps, daytime running lights, and interior lighting."},{"question":"What are the equivalents or replacements for LT3755EMSE-1#WPBF?","answer":"A close functional peer is the LT3755IUD#PBF, which shares the same topology support, dimming modes, and supply range but comes in a different package (QFN vs MSOP-EP). The LT3756EMSE-1#PBF is a higher-voltage variant (6 V minimum supply) in the same MSOP-EP package. Neither is a drop-in replacement — verify the pinout and thermal pad layout before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT3755EMSE-1WPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT3755EMSE-1WPBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}