{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX1651ESA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX1651ESA","canonicalUrl":"https://icboms.com/analog-devices/MAX1651ESA","factsUrl":"https://icboms.com/api/mcp/products/MAX1651ESA%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX1651ESA+ step-down buck controller, transistor driver output, single phase, up to 300kHz switching frequency, 3V to 16V supply, -40°C to 85°C, 8-SOIC package, tube.","salesMarkdown":"## What the MAX1651ESA+ is and where it fits The Maxim Integrated MAX1651ESA+ is a step-down (buck) switching regulator controller designed for non-isolated DC-DC conversion. It drives an external transistor switch at frequencies up to 300kHz, making it suitable for medium-power point-of-load regulation in industrial control, telecom, and embedded systems. The 3V to 16V supply range covers common 5V and 12V rails, and the -40°C to 85°C operating temperature grade fits factory-floor and outdoor telecom enclosures without requiring an extended-range part. ## Switching frequency and inductor sizing The MAX1651ESA+ switches at up to 300kHz. The part does not include a clock-sync pin, so it runs free-running. ## Supply range and output configuration With a Vcc range of 3V to 16V, this controller can regulate from a 5V logic rail or a 12V intermediate bus. The output is configured as positive, single-phase, driving an external transistor—no internal FET, so the designer picks the switch based on the load current. The 96.5% maximum duty cycle means it can run near dropout, useful when the input is only a volt or two above the output target. ## Package and handling The MAX1651ESA+ comes in an 8-pin SOIC (0.154\" body width, 3.90 mm wide), surface-mount, shipped in tube. The SOIC-8 footprint is standard and easy to hand-solder or reflow. No moisture-sensitive level is stated in the listing, but as a general practice for SOIC packages, store the reels dry if the bake time is unknown—especially if the part has been on the shelf for a while. ## Lifecycle and sourcing The MAX1651ESA+ is listed as Active with ROHS3 compliance. For BOM planning, this means no immediate LTB risk—good for both new designs and sustaining production.","metaTitle":"MAX1651ESA+ Buck Controller, Step-Down, 300kHz, 8-SOIC","metaDescription":"MAX1651ESA+ is a step-down buck controller from Maxim Integrated. Switching frequency up to 300kHz, 3V-16V supply, -40°C to 85°C. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tube","Function":"Step-Down","Topology":"Buck","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Control Features":"Enable","Duty Cycle (Max)":"96.5%","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"Up to 300kHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"8-SOIC","Voltage - Supply (Vcc/Vdd)":"3V ~ 16V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.45","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$7.45000","currency":"USD"},{"qty":10,"price":"$6.72900","currency":"USD"},{"qty":25,"price":"$6.41640","currency":"USD"},{"qty":100,"price":"$5.57120","currency":"USD"},{"qty":250,"price":"$5.32080","currency":"USD"},{"qty":500,"price":"$4.85132","currency":"USD"},{"qty":1000,"price":"$4.69484","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/47a137b3f9de909a9f45f5fdc7a1e0fd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the switching frequency of the MAX1651ESA+?","answer":"The switching frequency is rated up to 300kHz. The part does not support clock synchronization, so it runs free-running."},{"question":"What is the typical application for the MAX1651ESA+?","answer":"This buck controller is used for non-isolated step-down DC-DC conversion in industrial control, telecom, and embedded systems, regulating from a 5V or 12V rail down to a lower output voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX1651ESA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX1651ESA 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}}