{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX1745EUB+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX1745EUB","canonicalUrl":"https://icboms.com/analog-devices/MAX1745EUB","factsUrl":"https://icboms.com/api/mcp/products/MAX1745EUB%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX1745EUB+ buck controller, step-down topology, 4.5V to 36V input, up to 330kHz switching, transistor driver output, 10-uMAX/uSOP package, tube.","salesMarkdown":"## Input range and switching frequency — sizing the power stage The MAX1745EUB+ is a current-mode buck controller that accepts a 4.5V to 36V supply rail, covering standard 5V, 12V, and 24V industrial buses without a pre-regulator. Switching frequency runs up to 330kHz — this sets the inductor value and output capacitor size; a 330kHz design uses smaller magnetics than a 100kHz part but trades higher core loss and switching loss in the external FET. The 100% duty-cycle capability means the output can ride close to the input rail — useful when the input sags near the regulation target, like a battery-backed bus during discharge. ## External FET and output stage — what the driver expects This is a transistor-driver controller — it needs an external N-channel MOSFET and an output inductor to form a complete buck converter. The internal gate driver is sized for the switching frequency range. No synchronous rectifier on-chip, so the low-side is a Schottky diode. That simplifies the layout but costs efficiency at high output current compared to a synchronous design. Single output, positive configuration — one regulated rail per controller. The enable pin lets the system sequencer hold the output off until the upstream rail is stable. Housed in a 10-uMAX/uSOP (3.00mm width, 0.118\" pitch), the MAX1745EUB+ is a surface-mount part suited for compact PCBs. The tube packaging is standard for prototype and low-volume builds. Fine for factory-floor PSUs, telecom line cards, and embedded systems; skip it for under-hood or 125°C environments. ## Sourcing and compliance — active, RoHS3, quoted to order RoHS3 compliant — the + suffix indicates lead-free and meets EU Directive 2015/863.","metaTitle":"MAX1745EUB+ Buck Controller, 4.5-36V, 10-uMAX","metaDescription":"Active-production MAX1745EUB+ step-down controller from Analog Devices. 4.5V to 36V input, up to 330kHz switching, 10-uMAX package. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tube","Function":"Step-Down","Topology":"Buck","Clock Sync":"No","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","Duty Cycle (Max)":"100%","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"Up to 330kHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"10-uMAX/uSOP","Voltage - Supply (Vcc/Vdd)":"4.5V ~ 36V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.65","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$8.65000","currency":"USD"},{"qty":10,"price":"$7.81700","currency":"USD"},{"qty":25,"price":"$7.45360","currency":"USD"},{"qty":100,"price":"$6.47210","currency":"USD"},{"qty":250,"price":"$6.18120","currency":"USD"},{"qty":500,"price":"$5.63580","currency":"USD"},{"qty":1000,"price":"$4.90860","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/64f29ec44e475bbda990c4e190004e09.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does the MAX1745EUB+ need an external MOSFET?","answer":"Yes — the output is a transistor driver, so an external N-channel FET and an output inductor are required to complete the buck converter. No synchronous rectifier is included."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX1745EUB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX1745EUB 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}}