{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC3644IY-2#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC3644IY-2PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC3644IY-2PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC3644IY-2%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC3644IY-2#PBF, IC REG BUCK ADJ 1.25A QUAD 36BGA, Step-Down, Buck topology, 4 outputs, 2.7V to 17V input, 0.6V to 17V adjustable output, 2.25MHz switching, Synchronous Rectifier, -40°C to 125°C, 36-BGA (5x5), Tray.","salesMarkdown":"## Quad 1.25 A step-down for multi-rail point-of-load The LTC3644IY-2#PBF from Analog Devices is a quad-output synchronous buck regulator that delivers up to 1.25 A per channel from a 2.7 V to 17 V input rail. It is designed for distributed power architectures where a single intermediate bus feeds multiple low-voltage point-of-load rails — think FPGA core and I/O banks, multi-rail SoC supplies, or base-station line cards that need four independent 0.6 V to 17 V outputs sequenced or paralleled. The 2.25 MHz fixed switching frequency keeps external inductors and capacitors small, and the internal synchronous rectifiers eliminate the external catch diode that a non-synchronous design would need. Packaged in a 36-BGA (5x5 mm), it is sized for dense boards where every square millimeter counts. ## Active lifecycle — no last-time-buy pressure This part carries an Active product status and ROHS3 compliance. For a four-rail regulator specified into a multi-year production program, the Active status removes one sourcing worry. ## Sourcing this part for your BOM If your BOM needs a quad buck in the 36-BGA footprint, this is the active, production-grade part to qualify.","metaTitle":"LTC3644IY-2#PBF Quad Buck Regulator, 1.25 A, 2.25 MHz","metaDescription":"LTC3644IY-2#PBF is a quad step-down buck regulator from Analog Devices.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tray","Function":"Step-Down","Topology":"Buck","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"36-FBGA","lifecycle_stage":"eol_hot","Current - Output":"1.25A","Number of Outputs":"4","Output Configuration":"Positive","Frequency - Switching":"2.25MHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"17V","Voltage - Input (Min)":"2.7V","Voltage - Output (Max)":"17V","Supplier Device Package":"36-BGA (5x5)","Voltage - Output (Min/Fixed)":"0.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.87","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$8.87000","currency":"USD"},{"qty":10,"price":"$8.01300","currency":"USD"},{"qty":25,"price":"$7.64000","currency":"USD"},{"qty":80,"price":"$6.63388","currency":"USD"},{"qty":230,"price":"$6.33574","currency":"USD"},{"qty":490,"price":"$5.77669","currency":"USD"},{"qty":980,"price":"$5.03132","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7c623d477efe74337952425ad99cede1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the LTC3644IY-2#PBF datasheet?","answer":"The datasheet for the LTC3644IY-2#PBF is published by Analog Devices and covers the full specifications, application circuits, and layout guidelines for this quad buck regulator. It is available from the manufacturer's documentation portal."},{"question":"What is the closest functional alternative to the LTC3644IY-2#PBF?","answer":"A functional peer is the LT3640EFE#PBF, a dual-output buck regulator with 2 MHz switching and 1.1 A per channel, but it lacks synchronous rectification and has only two outputs versus four. The LTC3644IY-2#PBF is the higher-density, higher-efficiency choice for four-rail designs."},{"question":"What package does the LTC3644IY-2#PBF come in?","answer":"The LTC3644IY-2#PBF is supplied in a 36-FBGA package (5x5 mm) on Tray. It is a surface-mount BGA requiring a 36-ball footprint with 0.5 mm or 0.65 mm pitch typical for this class."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC3644IY-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/LTC3644IY-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}}