{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT3755EMSE-2#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT3755EMSE-2PBF","canonicalUrl":"https://icboms.com/analog-devices/LT3755EMSE-2PBF","factsUrl":"https://icboms.com/api/mcp/products/LT3755EMSE-2%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT3755EMSE-2#PBF, DC DC Controller, 1 Output, 100kHz ~ 1MHz, 4.5V ~ 40V Supply, Surface Mount, 16-TFSOP Exposed Pad, Tube.","salesMarkdown":"## A DC/DC controller that doesn't need an internal switch The LT3755EMSE-2#PBF is a DC/DC controller from Analog Devices built for driving high-brightness LEDs. It's a controller, not a converter — there's no internal switch, so you pick the external MOSFET and inductor to match the load current and topology. That means it handles boost, buck, flyback, and SEPIC configurations, making it a single BOM line for a range of LED strings from a few hundred milliamps to several amps, depending on the external components. ## 100 kHz to 1 MHz — where the frequency lands matters The switching frequency is programmable from 100 kHz to 1 MHz. A lower frequency cuts switching losses and lets you use a bigger inductor with lower core loss, which helps in thermally constrained enclosures. Crank it to 1 MHz and you shrink the magnetics and output capacitor, but you'll need to watch gate-drive losses and layout parasitics. The frequency pin accepts a resistor to ground — no external clock needed. ## 4.5 V to 40 V supply — automotive and industrial rails The input range runs from 4.5 V up to 40 V. That 4.5 V minimum means it starts from a standard 5 V rail or a single Li-ion cell, and the 40 V ceiling covers 24 V industrial buses and 12 V automotive systems with load-dump transients (as long as you add external clamping). ## Analog and PWM dimming — two ways to control brightness Dimming is supported in both analog and PWM modes. Analog dimming adjusts the LED current linearly via a control voltage, which is simple and noise-free. PWM dimming switches the LED string at a frequency above visible flicker, giving a wider dimming range and better color consistency — useful in architectural or backlighting designs where the LED current must stay constant during the on-time. ## Package and thermal — the exposed pad is your friend It comes in a 16-lead MSOP with an exposed pad. That pad is the main thermal path — without a via stitch to the ground plane under the part, the junction temperature will climb fast above 400 mA continuous output. The pad is also the GND connection, so the PCB layout needs a solid thermal and electrical connection. The mounting is surface-mount, so reflow profiles follow the standard MSOP-EP footprint.","metaTitle":"LT3755EMSE-2#PBF LED Driver Controller, 100kHz-1MHz","metaDescription":"Analog Devices LT3755EMSE-2#PBF DC/DC LED controller. 4.5V-40V input, 100kHz-1MHz switching, analog/PWM dimming. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Type":"DC DC Controller","Dimming":"Analog, PWM","Package":"Tube","Topology":"Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost)","Frequency":"100kHz ~ 1MHz","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":"0°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":"$9.04","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.04000","currency":"USD"},{"qty":10,"price":"$8.16500","currency":"USD"},{"qty":37,"price":"$7.78514","currency":"USD"},{"qty":111,"price":"$6.75973","currency":"USD"},{"qty":259,"price":"$6.45591","currency":"USD"},{"qty":518,"price":"$5.88627","currency":"USD"},{"qty":1036,"price":"$5.12676","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/83205d0a0ffb9359a0bfdbe7593dc850.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the frequency range of LT3755EMSE-2#PBF?","answer":"The switching frequency is programmable from 100 kHz to 1 MHz, set by a single resistor to ground."},{"question":"What are the alternatives to LT3755EMSE-2#PBF?","answer":"The LT3755EUD-1#PBF is a functional peer with the same dimming modes, topology support, and supply range, but in a different package (16-QFN). It's a valid second-source candidate for dual-sourcing or a footprint change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT3755EMSE-2PBF","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-2PBF 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}}