{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC3633IUFD#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC3633IUFDPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC3633IUFDPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC3633IUFD%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC3633IUFD#PBF dual-output step-down buck regulator, 3A per channel, adjustable output 0.6V-14.7V, 500kHz-4MHz switching frequency, 28-QFN (4x5) exposed pad, tube packaging.","salesMarkdown":"## Dual 3A buck in a 4x5 QFN — what the package tells you The LTC3633IUFD#PBF is a dual-channel synchronous step-down regulator delivering 3 A per output from a 3.6 V to 15 V input rail. The tube packaging means it arrives in a stick, not on a reel; if your pick-and-place line expects tape, budget a tube-to-tape transfer step or order the tape-and-reel suffix variant. ## Switching frequency and output flexibility Switching frequency is programmable from 500 kHz to 4 MHz via a resistor or external sync — a 2 MHz setting shrinks the inductor to 1 µH or so, which keeps the total solution footprint tight around the QFN. The two outputs share the same frequency but regulate independently, each adjustable from 0.6 V up to 14.7 V (14.7 V is the input ceiling minus a dropout headroom). ## Thermal envelope and rework considerations Pin 1 is marked by a chamfer on the package corner — check the orientation before placing, because a QFN rotated 90° lands the supply pins on the wrong pads and the magic smoke escapes.","metaTitle":"LTC3633IUFD#PBF Dual 3A Buck Regulator, 28-QFN (4x5)","metaDescription":"Analog Devices LTC3633IUFD#PBF dual 3A step-down buck converter, adjustable output 0.6-14.7V, 500kHz-4MHz switching, 28-QFN exposed pad. Active, ROHS3","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Package":"Tube","Function":"Step-Down","Topology":"Buck","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"28-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Output":"3A","Number of Outputs":"2","Output Configuration":"Positive","Frequency - Switching":"500kHz ~ 4MHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"15V","Voltage - Input (Min)":"3.6V","Voltage - Output (Max)":"14.7V","Supplier Device Package":"28-QFN (4x5)","Voltage - Output (Min/Fixed)":"0.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.94","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.94000","currency":"USD"},{"qty":10,"price":"$10.97500","currency":"USD"},{"qty":25,"price":"$10.51960","currency":"USD"},{"qty":100,"price":"$9.26870","currency":"USD"},{"qty":250,"price":"$8.81376","currency":"USD"},{"qty":500,"price":"$8.24514","currency":"USD"},{"qty":1000,"price":"$7.56278","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does Analog Devices provide for LTC3633IUFD#PBF?","answer":"The part is ROHS3 compliant per the manufacturer's declaration. No UL, IEC, or REACH-specific certificate is listed in the standard product documentation. RoHS compliance certificates are available from Analog Devices on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC3633IUFDPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC3633IUFDPBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}