{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT3756IUD#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT3756IUD~4PBF","canonicalUrl":"https://icboms.com/analog-devices/LT3756IUD~4PBF","factsUrl":"https://icboms.com/api/mcp/products/LT3756IUD%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT3756IUD#PBF DC DC LED driver controller, 100V output, 100kHz-1MHz switching, analog and PWM dimming, 16-QFN (3x3 mm), tube.","salesMarkdown":"## LED driver controller with 100V output ceiling The LT3756IUD#PBF: Its 100V output rating means it can power a long series string of LEDs — think a dozen or more white LEDs in series — from a single boost or flyback stage, without needing a separate current-balancing circuit for each LED. The controller supports four topologies — boost, buck, SEPIC, and flyback — so the same IC can be dropped into a constant-current LED driver whether the input rail is above or below the LED string voltage. The 100kHz to 1MHz switching frequency range lets you trade off inductor size against switching losses: lower frequency for efficiency, higher for a compact footprint. ## Analog and PWM dimming — two ways to set brightness The LT3756IUD#PBF supports both analog and PWM dimming. Analog dimming adjusts the LED current continuously by varying a control voltage — useful for smooth, flicker-free brightness changes. PWM dimming switches the LED string on and off at a frequency above visible flicker, which preserves colour temperature across the dimming range, making it the preferred method for architectural or display backlighting. The controller itself does not include an internal switch — it drives an external MOSFET. This lets you scale the output power by choosing a FET with the right Rds(on) and current rating for your LED load, rather than being limited by an integrated switch. ## Wide supply range and industrial temperature grade Supply voltage spans 6V to 100V, so the controller can run from a 12V or 24V industrial rail, an automotive battery (with transients), or a 48V telecom bus. Housed in a 16-lead WFQFN with exposed pad (3x3 mm), the package keeps the board footprint small.","metaTitle":"LT3756IUD#PBF DC DC Controller, 100V Output, 16-QFN","metaDescription":"Analog Devices LT3756IUD#PBF DC DC LED driver controller, 100V output, 100kHz-1MHz, analog/PWM dimming. Active, RoHS3. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"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-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Output":"100V","Number of Outputs":"1","Internal Switch(s)":"No","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Supply (Max)":"100V","Voltage - Supply (Min)":"6V","Supplier Device Package":"16-QFN (3x3)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.99","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.99000","currency":"USD"},{"qty":10,"price":"$9.02500","currency":"USD"},{"qty":25,"price":"$8.60520","currency":"USD"},{"qty":100,"price":"$7.47170","currency":"USD"},{"qty":250,"price":"$7.13592","currency":"USD"},{"qty":500,"price":"$6.50628","currency":"USD"},{"qty":1000,"price":"$5.94000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"How can I order the LT3756IUD#PBF or check availability?","answer":"The LT3756IUD#PBF is an active Analog Devices part."},{"question":"What is the difference between the LT3756IUD#PBF and the LT3756EMSE-1#PBF?","answer":"Both are the same DC DC LED driver controller core with identical topology support and dimming options. The key difference is the package: the LT3756IUD#PBF comes in a 16-QFN (3x3 mm), while the LT3756EMSE-1#PBF is in an MSOP-16E package. The pinout and thermal pad layout differ, so a board designed for one cannot accept the other without a layout change."},{"question":"Does the LT3756IUD#PBF require an external MOSFET?","answer":"Yes, the controller has no internal switch. You select an external N-channel MOSFET rated for your LED string voltage and current. This gives flexibility in power level — a small FET for a few watts, a larger one for higher-power strings."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT3756IUD~4PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT3756IUD~4PBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}