{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC1628IUH#TRPBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC1628IUH~4TRPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC1628IUH~4TRPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC1628IUH%23TRPBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC1628IUH#TRPBF step-down buck controller, 2-phase synchronous, 220kHz switching, 3.5V-30V input, 32-WFQFN exposed pad, Bulk package.","salesMarkdown":"## What this 2-phase synchronous buck controller does for a power rail The LTC1628IUH#TRPBF is a 2-phase, dual-output step-down (buck) switching regulator controller from Analog Devices. It drives external N-channel MOSFETs in a synchronous rectifier topology, meaning the low-side FET replaces the freewheeling diode for higher efficiency at the cost of a more complex gate-drive layout. Two outputs running 180° out of phase reduce input ripple current and let you share a single input capacitor bank — useful when pulling 10+ amps from a 12V or 24V backplane. The 220 kHz switching frequency keeps the inductor physically small while staying above the audible band. ## Supply range, temperature grade, and control features Input supply range is 3.5V to 30V on Vcc — covers standard 5V, 12V, and 24V industrial rails without an extra bias supply. Control features include Enable, Frequency Control, Power Good, and Soft Start. The 99.4% maximum duty cycle means the output can run very close to the input voltage — useful for a 3.3V rail from a 3.5V input with minimal dropout. Output configuration is positive, and the transistor-driver output type means you supply the external MOSFETs — the controller handles the gate drive timing and dead-time control. Housed in a 32-WFQFN exposed pad package (5x5 mm body, supplier device package 32-QFN). The part is catalogued under Discrete Semiconductors. No AEC-Q grade or specific automotive qualification is cited; the industrial temperature range suggests a general-purpose or telecom-grade application.","metaTitle":"LTC1628IUH#TRPBF Analog Devices Step-Down Buck, 2-Phase","metaDescription":"Active LTC1628IUH#TRPBF from Analog Devices. 2-phase synchronous buck controller, 3.5-30V input, 220kHz, 32-QFN. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Bulk","Function":"Step-Down","Topology":"Buck","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"2","Package / Case":"32-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Enable, Frequency Control, Power Good, Soft Start","Duty Cycle (Max)":"99.4%","Number of Outputs":"2","Output Configuration":"Positive","Frequency - Switching":"220kHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"Yes","Supplier Device Package":"32-QFN (5x5)","Voltage - Supply (Vcc/Vdd)":"3.5V ~ 30V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.47","stockQuantity":0,"priceTiers":[{"qty":29,"price":"$10.47000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6c46c53ee8a9a63976053f883d72f567.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is LTC1628IUH#TRPBF's listed package?","answer":"The supplier device package is 32-QFN (5x5 mm), corresponding to the 32-WFQFN exposed pad package."},{"question":"What is the function of LTC1628IUH#TRPBF?","answer":"It is a step-down (buck) switching regulator controller with a synchronous rectifier topology. It drives external N-channel MOSFETs to produce a regulated output voltage lower than the input, with two outputs operating 180° out of phase."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC1628IUH~4TRPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC1628IUH~4TRPBF 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}}