{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX8555AEUB","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX8555AEUB","canonicalUrl":"https://icboms.com/analog-devices/MAX8555AEUB","factsUrl":"https://icboms.com/api/mcp/products/MAX8555AEUB","rawCanonicalId":null},"summary":{"shortDescription":"Maxim MAX8555AEUB, N+1 ORing Controller, N-Channel external FET, 3V–5.5V / 8V–13.25V supply, 100 ns turn-off delay, 10-uMAX package, -40°C to 85°C.","salesMarkdown":"## N+1 ORing controller for redundant power rails The Maxim MAX8555AEUB is an N+1 ORing MOSFET controller designed to replace discrete diode-OR solutions in redundant power architectures. It drives an external N-channel MOSFET to steer current from the active supply rail while blocking reverse current from a failed or lower-voltage rail. With a 100 ns turn-off delay, the MAX8555AEUB catches reverse-current faults fast enough to keep the output bus within regulation during a supply dropout or short-circuit event. ## External FET selection and thermal budget Because the MAX8555AEUB has no internal switch, the designer selects an external N-channel MOSFET sized for the load current and the worst-case Rds(on) at the maximum junction temperature. The 2 mA supply current is drawn from the higher of the two supply rails. The 1:1 input-to-output ratio means each controller manages a single ORing path; multiple devices are used in parallel for N+1 redundancy. ## Sourcing and lifecycle posture Note that this variant is listed as RoHS non-compliant. If your BOM requires RoHS compliance, confirm the lead-free equivalent (MAX8555AEUB+) before committing the line.","metaTitle":"MAX8555AEUB N+1 ORing Controller, 100 ns turn-off, 10-uMAX","metaDescription":"Maxim MAX8555AEUB N+1 ORing MOSFET controller for redundant power supplies. 3V–5.5V / 8V–13.25V supply, 100 ns off delay, 10-uMAX package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":[],"specifications":{"Type":"N+1 ORing Controller","Package":"Bulk","FET Type":"N-Channel","Applications":"Redundant Power Supplies, Telecom Infrastructure","Mounting Type":"Surface Mount","Package / Case":"10-TFSOP, 10-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"2 mA","Delay Time - OFF":"100 ns","Voltage - Supply":"3V ~ 5.5V, 8V ~ 13.25V","Internal Switch(s)":"No","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"10-uMAX"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.88","stockQuantity":0,"priceTiers":[{"qty":160,"price":"$1.88000","currency":"USD"}]},"links":{"datasheetUrl":"https://rocelec.widen.net/view/pdf/zbz3clla5q/MAXMS03721-1.pdf?t.download=true&u=5oefqw","sourceUrl":null},"ai":{"faq":[{"question":"What is the typical application for the MAX8555AEUB?","answer":"It is designed for redundant power supplies and telecom infrastructure equipment where N+1 ORing of supply rails is required to maintain uninterrupted DC power."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX8555AEUB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX8555AEUB 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}}