{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX668EUB+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX668EUB","canonicalUrl":"https://icboms.com/analog-devices/MAX668EUB","factsUrl":"https://icboms.com/api/mcp/products/MAX668EUB%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX668EUB+ current-mode PWM controller, step-up/step-up-step-down function, boost/flyback/SEPIC topology, 100kHz-500kHz switching frequency, 3V-28V supply, 10-uMAX/uSOP package, -40°C to 85°C operating temperature.","salesMarkdown":"## What the MAX668EUB+ does in a supply design The Maxim Integrated MAX668EUB+ is a current-mode PWM controller that handles step-up, step-up/step-down, and isolated topologies — boost, flyback, and SEPIC. It drives an external transistor (single output, positive rail, isolation-capable) and runs from a 3V to 28V supply. The switching frequency is adjustable between 100kHz and 500kHz, with clock sync available for noise-sensitive multi-rail systems. Duty cycle maxes at 90%, and the controller includes enable and frequency control pins. It comes in a 10-pin uMAX/uSOP surface-mount package and is rated for -40°C to 85°C operation. ## Where it fits in the BOM This controller is a good fit for industrial and telecom supplies that need a non-isolated boost or an isolated flyback with a single transistor. The 3V to 28V input range covers 5V, 12V, and 24V rails commonly found in factory automation, motor drives, and outdoor telecom gear. The 100kHz to 500kHz switching band lets you trade inductor size against efficiency — 100kHz for lower switching losses, 500kHz for smaller magnetics. The -40°C to 85°C industrial temperature grade suits unheated enclosures and engine-bay-adjacent equipment. ## Sourcing and lifecycle The MAX668EUB+ carries an active lifecycle status with ROHS3 compliance. For production BOMs, this part can be specified without an immediate obsolescence risk.","metaTitle":"MAX668EUB+ Switching Controller, Boost/Flyback/SEPIC","metaDescription":"MAX668EUB+ current-mode PWM controller for boost, flyback, SEPIC topologies. 3V-28V supply, 90% duty cycle, 10-uMAX package. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tube","Function":"Step-Up, Step-Up/Step-Down","Topology":"Boost, Flyback, SEPIC","Clock Sync":"Yes","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"10-TFSOP, 10-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Control Features":"Enable, Frequency Control","Duty Cycle (Max)":"90%","Number of Outputs":"1","Output Configuration":"Positive, Isolation Capable","Frequency - Switching":"100kHz ~ 500kHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"10-uMAX/uSOP","Voltage - Supply (Vcc/Vdd)":"3V ~ 28V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.53","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.53000","currency":"USD"},{"qty":10,"price":"$5.86500","currency":"USD"},{"qty":50,"price":"$5.54480","currency":"USD"},{"qty":100,"price":"$4.80560","currency":"USD"},{"qty":250,"price":"$4.55912","currency":"USD"},{"qty":500,"price":"$4.09090","currency":"USD"},{"qty":1000,"price":"$3.45016","currency":"USD"},{"qty":2500,"price":"$3.27765","currency":"USD"}]},"links":{"datasheetUrl":"https://pdfserv.maximintegrated.com/en/ds/MAX668-MAX669.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What topologies does the MAX668EUB+ support?","answer":"It supports boost, flyback, and SEPIC topologies, with step-up and step-up/step-down output configurations. Isolation is possible in flyback and SEPIC designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX668EUB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX668EUB 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}}