{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC3884IUK#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC3884IUK~4PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC3884IUK~4PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC3884IUK%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices PolyPhase® series, LTC3884IUK#PBF, step-down DC/DC controller, 2-phase, PMBus interface, 48-WFQFN exposed pad, tube packaging.","salesMarkdown":"## Dual-phase PMBus controller for high-density POL rails The LTC3884IUK#PBF is a dual-output, 2-phase step-down switching regulator controller from the PolyPhase® series, integrating an I²C/PMBus serial interface for telemetry and configuration. Operating from a 4.5 V to 38 V supply rail, it drives external N-channel MOSFETs in a buck topology with synchronous rectification, supporting a switching frequency range of 200 kHz to 1 MHz. The 48-lead WFQFN exposed-pad package (7x7 mm) keeps the thermal path short for the controller itself — the power dissipation is in the external FETs, but the pad still needs a solid via-stitch to the ground plane. ## PMBus telemetry and control features Control features include enable, frequency control, phase control, and power-good flagging — the phase-control pin lets you interleave the two channels for ripple cancellation at the output capacitor. The PMBus interface reads output voltage, current, and temperature telemetry, and writes margining and fault-limit registers — useful for ATE or in-system calibration without touching a trim pot. Clock synchronization allows multiple LTC3884 parts to share a common switching edge, reducing beat-frequency ripple on a shared input bus.","metaTitle":"LTC3884IUK#PBF PolyPhase Buck Controller, 2-Phase, 48-QFN","metaDescription":"LTC3884IUK#PBF PolyPhase step-down controller, 2-phase, PMBus interface, 4.5-38V supply, -40 to 125°C. Active production, ROHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":"PolyPhase®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"PolyPhase®","Package":"Tube","Function":"Step-Down","Topology":"Buck","Clock Sync":"Yes","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"2","Package / Case":"48-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Enable, Frequency Control, Phase Control, Power Good","Number of Outputs":"2","Serial Interfaces":"I²C, PMBus","Output Configuration":"Positive","Frequency - Switching":"200kHz ~ 1MHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"Yes","Supplier Device Package":"48-QFN (7x7)","Voltage - Supply (Vcc/Vdd)":"4.5V ~ 38V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$16.67","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$16.67000","currency":"USD"},{"qty":10,"price":"$15.32300","currency":"USD"},{"qty":25,"price":"$14.68800","currency":"USD"},{"qty":100,"price":"$12.94120","currency":"USD"},{"qty":250,"price":"$12.30608","currency":"USD"},{"qty":500,"price":"$11.51212","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC3884IUK~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/LTC3884IUK~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}}