{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX5903NNEUT+T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX5903NNEUTT","canonicalUrl":"https://icboms.com/analog-devices/MAX5903NNEUTT","factsUrl":"https://icboms.com/api/mcp/products/MAX5903NNEUT%2BT","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX5903NNEUT+T, Simple Swapper™ series, Type Hot Swap Controller, 1 channel, 9V ~ 72V supply, 1 mA supply current, programmable UVLO, thermal limit, SOT-23-6, -40°C ~ 85°C.","salesMarkdown":"## What this hot-swap controller does on your board The MAX5903NNEUT+T from Analog Devices (Simple Swapper™ series) is a single-channel hot-swap controller that manages the inrush current when you plug a card into a live backplane. It works with an external N-channel MOSFET — the controller itself doesn't carry the load current, so the pass transistor is sized to the actual load. Supply range runs 9V to 72V, which covers 12V, 24V, and 48V industrial and telecom rails without a separate regulator. The chip draws 1 mA from the rail, so it won't eat into your power budget on a densely populated card. It's rated for -40°C to 85°C, meaning it can live in an outdoor telecom cabinet or a factory-floor PLC chassis without derating headaches. ## Package and mounting The undervoltage lockout (UVLO) threshold is programmable via an external resistor divider. That lets you set the turn-on voltage so the controller doesn't try to power up the card until the backplane rail is stable. On a 48V telecom shelf, you might set UVLO at 42V to avoid browning out during a battery transfer. If the input dips below that threshold, the controller holds the external MOSFET off — no partial turn-on, no glitches. The thermal-limit feature is the fail-safe that a simpler latch-off controller lacks. If the external MOSFET overheats — say from a sustained short or a load that's pulling more than the heatsink can handle — the controller shuts it down and lets it cool before retrying. That's useful on a card that gets hot-swapped into a live chassis where the load capacitance is higher than expected; the thermal limit keeps the MOSFET from letting the magic smoke out while the inrush timer sorts itself out. ## Package and mounting Housed in a SOT-23-6 (SOT-6 supplier package), this is a surface-mount part that fits on a compact card edge. The six-pin footprint is small enough to tuck near the input connector, which is exactly where you want the hot-swap controller — short traces to the external MOSFET gate and the sense resistor keep the loop tight and reduce parasitic inductance that can cause gate oscillation. ## Lifecycle and sourcing The MAX5903NNEUT+T is listed as Active in production. ROHS3 compliant, so it passes the environmental requirements for new designs shipping into Europe or California.","metaTitle":"MAX5903NNEUT+T Hot Swap Controller, 9V–72V, SOT-23-6","metaDescription":"MAX5903NNEUT+T Simple Swapper™ hot-swap controller from Analog Devices. 9V–72V supply, programmable UVLO, thermal limit, SOT-23-6, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":"Simple Swapper™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Type":"Hot Swap Controller","Series":"Simple Swapper™","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Thermal Limit","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"SOT-23-6","lifecycle_stage":"eol_hot","Current - Supply":"1 mA","Voltage - Supply":"9V ~ 72V","Internal Switch(s)":"No","Number of Channels":"1","Operating Temperature":"-40°C ~ 85°C","Programmable Features":"UVLO","Supplier Device Package":"SOT-6"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.23","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.23000","currency":"USD"},{"qty":10,"price":"$5.62400","currency":"USD"},{"qty":25,"price":"$5.36240","currency":"USD"},{"qty":100,"price":"$4.65630","currency":"USD"},{"qty":250,"price":"$4.44704","currency":"USD"},{"qty":500,"price":"$4.05464","currency":"USD"},{"qty":1000,"price":"$3.53146","currency":"USD"},{"qty":2500,"price":"$3.40067","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/713d1ef949327f85a7d09d2ebea02c0f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does MAX5903NNEUT+T come in?","answer":"It comes in a SOT-23-6 surface-mount package (supplier device package SOT-6)."},{"question":"What is the difference between MAX5903 and MAX5902?","answer":"The MAX5903 and MAX5902 are both Simple Swapper™ hot-swap controllers with the same supply range and package. The key difference is the UVLO programming: the MAX5903 has a programmable UVLO threshold via an external resistor divider, while the MAX5902 uses a fixed internal UVLO threshold. If your design needs to set the turn-on voltage to match a specific backplane rail, the MAX5903 gives you that flexibility."},{"question":"What is the MAX5903NNEUT+T equivalent part?","answer":"The closest pin-compatible alternative within the Simple Swapper™ family is the MAX5902NNEUT+T, which shares the same SOT-23-6 package and 9V–72V supply range but uses a fixed UVLO threshold instead of programmable. For a direct replacement with the same programmable UVLO, stick with the MAX5903NNEUT+T."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX5903NNEUTT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX5903NNEUTT 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}}