{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC3866IFE#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC3866IFE~4PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC3866IFE~4PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC3866IFE%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC3866IFE#PBF current-mode synchronous buck controller, step-down topology, 4.5V to 38V input, 250kHz to 770kHz switching, 24-TSSOP exposed pad, Bulk package.","salesMarkdown":"## Current-mode synchronous buck controller for point-of-load regulation The LTC3866IFE#PBF: Synchronous rectification eliminates the external Schottky diode, improving efficiency at higher output currents — a common choice for 12 V or 24 V intermediate bus conversion in industrial and telecom power supplies. ## Switching frequency and inductor selection trade-off The switching frequency is programmable from 250 kHz to 770 kHz via a resistor on the RT pin — a lower frequency reduces switching losses but requires a larger inductor to keep ripple current within limits. At 770 kHz the inductor can be physically smaller, which helps in height-constrained layouts, but the gate-drive losses in the external MOSFETs increase proportionally with frequency. ## Active lifecycle — no design-in risk This part can be specified for new production without a migration plan. The Bulk package means it ships in tubes or trays rather than tape-and-reel — confirm the handling method with your assembly house if pick-and-place is planned.","metaTitle":"LTC3866IFE#PBF Step-Down Buck Controller, 4.5-38V","metaDescription":"LTC3866IFE#PBF from Analog Devices: current-mode synchronous buck controller, 4.5V to 38V input, 250kHz-770kHz, 24-TSSOP exposed pad. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Bulk","Function":"Step-Down","Topology":"Buck","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"24-TSSOP (0.173\\\", 4.40mm Width) Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"250kHz ~ 770kHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"Yes","Supplier Device Package":"24-TSSOP","Voltage - Supply (Vcc/Vdd)":"4.5V ~ 38V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.36","stockQuantity":0,"priceTiers":[{"qty":48,"price":"$6.36000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e16c67162ad913aa44f5a6584bedd702.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order LTC3866IFE#PBF and check availability?","answer":"The LTC3866IFE#PBF is an active part from Analog Devices. No stock-holding claim is made here."},{"question":"Does LTC3866IFE#PBF include soft-start and power-good?","answer":"Yes, the control features include soft-start, power-good output, enable, current limit, and tracking — simplifying sequencing in multi-rail systems."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC3866IFE~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/LTC3866IFE~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}}