{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX15157DATJ+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX15157DATJ","canonicalUrl":"https://icboms.com/analog-devices/MAX15157DATJ","factsUrl":"https://icboms.com/api/mcp/products/MAX15157DATJ%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX15157DATJ+, 48V Current-Mode Buck Controller, Step-Down, 8V to 60V Supply, 60kHz to 1MHz Switching, 32-TQFN (5x5mm) Exposed Pad, -40°C to 125°C, Active, ROHS3.","salesMarkdown":"## 48V Buck Controller — what it is and where it fits The Maxim Integrated MAX15157DATJ+ is a current-mode step-down (buck) controller for 48V distributed-power systems. It accepts an 8V to 60V input rail and drives an external N-channel MOSFET and Schottky diode. ## 50% duty cycle — the practical limit The 50% max duty cycle is a hard ceiling: the output voltage cannot exceed roughly half the input. For a 48V nominal input, the practical output range tops out around 24V. If you need a higher output ratio — say 48V to 36V — this controller cannot deliver it; you would need a part with a higher duty-cycle limit or a different topology. For the common 48V-to-12V or 48V-to-5V step-down, the 50% limit is not a constraint. ## Non-synchronous — external diode required Because the MAX15157DATJ+ does not include a synchronous rectifier, the design must add an external Schottky catch diode. This adds one BOM line and PCB area, but lets the designer choose a diode rated for the actual load current and thermal environment.","metaTitle":"MAX15157DATJ+ 48V Buck Controller, 60V Input, 32-TQFN","metaDescription":"MAX15157DATJ+ 48V current-mode buck controller, 8V to 60V input, 60kHz to 1MHz switching, -40°C to 125°C. Active, ROHS3 compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tray","Function":"Step-Down","Topology":"Buck","Clock Sync":"Yes","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"32-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Current Limit, Enable, Frequency Control, Phase Control, Power Good, Ramp, Soft Start","Duty Cycle (Max)":"50%","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"60kHz ~ 1MHz","Operating Temperature":"-40°C ~ 125°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"32-TQFN (5x5)","Voltage - Supply (Vcc/Vdd)":"8V ~ 60V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.6","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.60000","currency":"USD"},{"qty":10,"price":"$10.66300","currency":"USD"},{"qty":25,"price":"$10.22080","currency":"USD"},{"qty":80,"price":"$9.00525","currency":"USD"},{"qty":230,"price":"$8.56330","currency":"USD"},{"qty":490,"price":"$8.01082","currency":"USD"},{"qty":980,"price":"$7.34785","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/MAX15157D.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is MAX15157DATJ+ RoHS compliant?","answer":"Yes, the MAX15157DATJ+ is ROHS3 compliant."},{"question":"Does MAX15157DATJ+ require an external MOSFET?","answer":"Yes. The output type is Transistor Driver, meaning it drives an external N-channel MOSFET. The controller does not include the power switch on-chip. You also need an external Schottky catch diode because synchronous rectification is not supported."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX15157DATJ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX15157DATJ 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}}