{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX643AESA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX643AESA","canonicalUrl":"https://icboms.com/analog-devices/MAX643AESA","factsUrl":"https://icboms.com/api/mcp/products/MAX643AESA%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX643AESA+, Step-Up Boost Regulator, Adjustable Output 1.31V to 18V, 450mA Switch, 50kHz, 8-SOIC, Surface Mount, -40°C to 85°C.","salesMarkdown":"## What the MAX643AESA+ is and where it fits The MAX643AESA+ is a step-up (boost) switching regulator from Analog Devices, delivering a positive adjustable output from a low-voltage input. It switches at 50 kHz and can deliver up to 450 mA on the internal switch. ## Lifecycle and sourcing reality It is ROHS3 compliant, which simplifies compliance for EU and global builds. No last-time-buy risk to plan for on this line.","metaTitle":"MAX643AESA+ Boost Regulator, 50kHz, 450mA, 8-SOIC","metaDescription":"MAX643AESA+ step-up boost regulator from Analog Devices. 2V-16.5V input, 450mA switch, 50kHz switching, adjustable output up to 18V. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tube","Function":"Step-Up","Topology":"Boost","Output Type":"Adjustable (Fixed)","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Output":"450mA (Switch)","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"50kHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"No","Voltage - Input (Max)":"16.5V","Voltage - Input (Min)":"2V","Voltage - Output (Max)":"18V (Switch)","Supplier Device Package":"8-SOIC","Voltage - Output (Min/Fixed)":"1.31V (15V)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.92","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.92000","currency":"USD"},{"qty":10,"price":"$10.77100","currency":"USD"},{"qty":25,"price":"$10.26960","currency":"USD"},{"qty":100,"price":"$8.91710","currency":"USD"},{"qty":250,"price":"$8.51632","currency":"USD"},{"qty":500,"price":"$7.76488","currency":"USD"},{"qty":1000,"price":"$6.76296","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/97f9939a89b63cdc654d5aaf68355e80.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the switching frequency of MAX643AESA+?","answer":"The switching frequency is 50 kHz. This is a fixed-frequency architecture, not a pulse-skipping or PFM type."},{"question":"Does MAX643AESA+ have a synchronous rectifier?","answer":"No, it uses an external Schottky diode for the boost rectifier. The internal switch handles the low-side, and the diode provides the output path. This is typical for boost converters in this power range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX643AESA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX643AESA 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}}