{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT3954EUHE#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT3954EUHEPBF","canonicalUrl":"https://icboms.com/analog-devices/LT3954EUHEPBF","factsUrl":"https://icboms.com/api/mcp/products/LT3954EUHE%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT3954EUHE#PBF, DC DC Regulator LED Driver, 1 Output, 5A Switch, 100kHz to 1MHz, Flyback/SEPIC/Buck/Boost, 36-QFN (5x6), -40°C to 125°C.","salesMarkdown":"## What this LED driver brings to the board The LT3954EUHE#PBF is a DC DC regulator LED driver with an integrated 5A switch. It handles flyback, SEPIC, buck, and boost topologies. Dimming is analog and PWM. Switching frequency is 100kHz to 1MHz. Operating temperature is -40°C to 125°C. ## Package and mounting It comes in a 36-lead WFQFN with exposed pad, 5x6 mm footprint. That's a surface-mount part with a thermal pad underneath that needs a solid via array to the ground plane to pull heat out. The datasheet layout recommendation is worth following — the pad is the main thermal path, and a skimpy copper pour will limit the 5A switch's duty cycle at high ambient. ## Lifecycle and sourcing ROHS3 compliant. The closest functional peer is the LT3955EUHE#PBF, which drops the switch current to 3.5A but shares the same pinout and topology set.","metaTitle":"LT3954EUHE#PBF LED Driver, DC DC Regulator, 5A Switch","metaDescription":"LT3954EUHE#PBF is an active LED driver IC from Analog Devices. DC DC regulator with 5A switch, 40V max supply, analog and PWM dimming.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"DC DC Regulator","Dimming":"Analog, PWM","Package":"Tube","Topology":"Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost)","Frequency":"100kHz ~ 1MHz","Mounting Type":"Surface Mount","Package / Case":"36-WFQFN, 28 Leads, Exposed Pad","lifecycle_stage":"eol_hot","Number of Outputs":"1","Internal Switch(s)":"Yes","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Supply (Max)":"40V","Voltage - Supply (Min)":"4.5V","Supplier Device Package":"36-QFN (5x6)","Current - Output / Channel":"5A (Switch)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.87","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$10.87000","currency":"USD"},{"qty":10,"price":"$9.82200","currency":"USD"},{"qty":25,"price":"$9.36560","currency":"USD"},{"qty":100,"price":"$8.13210","currency":"USD"},{"qty":250,"price":"$7.76664","currency":"USD"},{"qty":500,"price":"$7.08132","currency":"USD"},{"qty":1000,"price":"$6.46500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/614fb9ed0b6489ff334ec0362d6af2e6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the equivalent or alternative to LT3954EUHE#PBF?","answer":"The closest functional alternative is the LT3955EUHE#PBF, which shares the same pinout and topology but has a 3.5A switch instead of 5A. For a different package with 4A boost-only capability, consider the LT3952AEFE#PBF."},{"question":"What does the 5A switch rating mean for my LED design?","answer":"The 5A rating is the peak switch current, not the continuous LED current. In a boost converter, you can typically drive a 1A LED string with good margin. For higher currents, derate based on input voltage and switching frequency."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT3954EUHEPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT3954EUHEPBF 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}}