{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT8645SEV#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT8645SEVPBF","canonicalUrl":"https://icboms.com/analog-devices/LT8645SEVPBF","factsUrl":"https://icboms.com/api/mcp/products/LT8645SEV%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices Silent Switcher®2 series, LT8645SEV#PBF step-down (buck) regulator, adjustable output, 8 A, 3.4 V to 65 V input, 32-LQFN (6x4 mm) surface-mount, tray.","salesMarkdown":"## What this Silent Switcher®2 regulator brings to the board The LT8645SEV#PBF is a Silent Switcher®2 family step-down buck regulator from Analog Devices, delivering 8 A continuous output from a 3.4 V to 65 V input rail. The wide input range covers everything from a 12 V industrial bus to a 48 V telecom supply without an external pre-regulator. Output is adjustable from 0.97 V up to 12 V, set by a resistor divider on the feedback pin. The single positive output uses internal synchronous rectification, so no external Schottky catch diode is needed — saves a component and a placement step. ## Switching frequency and thermal envelope Switching frequency is programmable from 200 kHz to 2.2 MHz via a resistor on the RT pin. ## Package and rework reality The 32-LQFN (6x4 mm) is a QFN-style package with a large exposed pad underneath. Without them, the part will current-limit or shut down long before reaching 8 A. Rework is doable with hot air if the board has a bottom-side preheat. The pad is large enough that the part self-centers during reflow if the solder paste is even. Pin 1 is marked by a chamfer on the top-side corner — verify orientation under a scope before placing; a 180° rotation puts the output on the input pins and lets the magic smoke out. Sourced through independent distribution channels.","metaTitle":"LT8645SEV#PBF Silent Switcher®2 Buck, 8A, 65V","metaDescription":"Analog Devices LT8645SEV#PBF Silent Switcher®2 step-down regulator, 8A output, 3.4-65V input, adjustable output, 32-LQFN. Active, RoHS3. Order via RFQ.","metaKeywords":null},"attributes":{"series":"Silent Switcher®2","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"Series":"Silent Switcher®2","Package":"Tray","Function":"Step-Down","Topology":"Buck","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"32-TFQFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Output":"8A","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"200kHz ~ 2.2MHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"65V","Voltage - Input (Min)":"3.4V","Voltage - Output (Max)":"12V","Supplier Device Package":"32-LQFN (6x4)","Voltage - Output (Min/Fixed)":"0.97V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.37","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$12.37000","currency":"USD"},{"qty":10,"price":"$11.36400","currency":"USD"},{"qty":25,"price":"$10.89320","currency":"USD"},{"qty":80,"price":"$9.59788","currency":"USD"},{"qty":230,"price":"$9.12687","currency":"USD"},{"qty":490,"price":"$8.53804","currency":"USD"},{"qty":980,"price":"$7.83144","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a21774c7466dad9f0d34229b5d72708d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is LT8645SEV#PBF's package and can it be hand-reworked?","answer":"The package is a 32-LQFN (6x4 mm) with an exposed pad. Hand rework is possible with hot air and bottom-side preheat, provided the PCB has adequate thermal vias under the pad to sink heat. The chamfered corner marks pin 1."},{"question":"What compliance documentation does Analog Devices provide for LT8645SEV#PBF?","answer":"The part is RoHS3 compliant (lead-free, no RoHS exemptions). Standard documentation includes the datasheet, RoHS declaration, and REACH compliance information available from the manufacturer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT8645SEVPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT8645SEVPBF 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}}