{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT3745EUJ-1#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT3745EUJ-1PBF","canonicalUrl":"https://icboms.com/analog-devices/LT3745EUJ-1PBF","factsUrl":"https://icboms.com/api/mcp/products/LT3745EUJ-1%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT3745EUJ-1#PBF, DC DC Controller, Buck topology, 16 outputs, 75mA per channel, PWM dimming, 200kHz~1MHz, 40-QFN (6x6), -40°C to 125°C.","salesMarkdown":"## 16-channel buck controller for multi-string LED backlighting The LT3745EUJ-1#PBF from Analog Devices is a 16-channel DC/DC controller designed for PWM-dimming LED backlight and signage applications. It operates as a step-down (buck) topology and delivers up to 75 mA per channel, making it a fit for large-format LCD backlight panels or multi-zone signage where each LED string needs independent current regulation. The controller requires external MOSFETs and inductor(s) — it is not a monolithic driver, so the BOM includes those power-stage components. ## Supply range and switching frequency — what they mean for the rail design The input supply range spans 6 V to 55 V, which covers common automotive and industrial bus voltages (12 V, 24 V, 48 V) without an external pre-regulator. The switching frequency is programmable from 200 kHz to 1 MHz, letting the designer trade off inductor size against switching losses. A 55 V max input also means the part can survive load-dump transients on a nominal 48 V rail, though external TVS clamping is still recommended for sustained overvoltage events. ## Temperature grade and package — deployment context Rated for -40°C to 125°C (junction), the LT3745EUJ-1#PBF suits outdoor signage, engine-bay-adjacent automotive lighting, and industrial equipment where ambient temperatures exceed 85°C. The package is a 40-lead WFQFN with exposed pad (6 mm × 6 mm), which requires a thermal via array under the pad to keep junction temperature within limits at full 16-channel load. Surface-mount assembly is standard, but the exposed pad needs a solder-paste stencil opening matched to the datasheet footprint. ## Lifecycle and sourcing It is RoHS3 compliant. For a BOM line that needs 16-channel LED drive, this part can be specified into new designs without immediate lifecycle risk.","metaTitle":"LT3745EUJ-1#PBF 16-Channel Buck LED Driver Controller","metaDescription":"LT3745EUJ-1#PBF is an active 16-channel DC/DC controller for PWM-dimming LED backlight/signage. Input 6V-55V, 75mA/ch, external MOSFETs required.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"DC DC Controller","Dimming":"PWM","Package":"Tube","Topology":"Step-Down (Buck)","Frequency":"200kHz ~ 1MHz","Applications":"Backlight, Signage","Mounting Type":"Surface Mount","Package / Case":"40-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Output":"36V","Number of Outputs":"16","Internal Switch(s)":"No","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Supply (Max)":"55V","Voltage - Supply (Min)":"6V","Supplier Device Package":"40-QFN (6x6)","Current - Output / Channel":"75mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.13","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$13.13000","currency":"USD"},{"qty":10,"price":"$12.07000","currency":"USD"},{"qty":25,"price":"$11.57000","currency":"USD"},{"qty":100,"price":"$10.19400","currency":"USD"},{"qty":250,"price":"$9.69368","currency":"USD"},{"qty":500,"price":"$9.06830","currency":"USD"},{"qty":1000,"price":"$8.85000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/55b75fb2294f1cba8156276d150557e6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does LT3745EUJ-1#PBF require external MOSFETs?","answer":"Yes — the LT3745EUJ-1#PBF is a controller with no internal switches. The design requires external MOSFETs and an inductor for each channel or a shared power stage, depending on the topology."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT3745EUJ-1PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT3745EUJ-1PBF 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}}