{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX5921AESA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX5921AESA","canonicalUrl":"https://icboms.com/analog-devices/MAX5921AESA","factsUrl":"https://icboms.com/api/mcp/products/MAX5921AESA%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX5921AESA+, Hot Swap Controller, -48V, 8-SOIC (0.154\", 3.90mm Width), Surface Mount, -40°C ~ 85°C, 700 µA supply current, -80V ~ -20V supply range.","salesMarkdown":"## What the MAX5921AESA+ is and where it fits The Maxim Integrated MAX5921AESA+ is a single-channel hot swap controller designed for -48V power systems, the standard voltage in telecom central offices, base stations, and -48V battery-backed industrial equipment. It manages the inrush current and protects against overcurrent, overvoltage, and undervoltage faults — all without an internal pass FET, so the designer selects the external MOSFET that matches the load current and thermal budget. The controller draws 700 µA from the supply rail and operates over the industrial temperature range of -40°C to 85°C, making it suitable for outdoor cabinets and unventilated enclosures. ## Programmable protection and fault handling The MAX5921AESA+ integrates programmable circuit breaker, current limit, overvoltage protection (OVP), and undervoltage lockout (UVLO), giving the designer control over the turn-on threshold and the fault-trip level. On a fault, the auto-retry feature cycles the output — useful for clearing transient overloads without a manual reset. The thermal limit shuts down the controller if the die temperature exceeds safe operating area, protecting both the IC and the external MOSFET. ## Package and mounting Housed in an 8-pin SOIC (0.154\" body width, 3.90 mm width), the MAX5921AESA+ is a surface-mount part that reflows on a standard lead-free profile. The small footprint keeps board area low, but the external MOSFET and sense resistor will dominate the hot-swap circuit's real estate. ## Sourcing and lifecycle It is ROHS3 compliant.","metaTitle":"MAX5921AESA+ Hot Swap Controller, -48V, 8-SOIC","metaDescription":"MAX5921AESA+ -48V hot swap controller in 8-SOIC. Active production, industrial temp range -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Type":"Hot Swap Controller","Package":"Tube","Features":"Auto Retry, Fault Timeout, Thermal Limit","Applications":"-48V","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"700 µA","Voltage - Supply":"-80V ~ -20V","Internal Switch(s)":"No","Number of Channels":"1","Operating Temperature":"-40°C ~ 85°C","Programmable Features":"Circuit Breaker, Current Limit, OVP, UVLO","Supplier Device Package":"8-SOIC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.37","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.37000","currency":"USD"},{"qty":10,"price":"$5.75400","currency":"USD"},{"qty":25,"price":"$5.48680","currency":"USD"},{"qty":100,"price":"$4.76420","currency":"USD"},{"qty":250,"price":"$4.55004","currency":"USD"},{"qty":500,"price":"$4.14858","currency":"USD"},{"qty":1000,"price":"$3.61328","currency":"USD"},{"qty":2500,"price":"$3.47945","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/85b02b9f44c5ef61bf02e10018327143.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does MAX5921AESA+ have internal switches?","answer":"No. The MAX5921AESA+ is a controller only — it has no internal pass FET. The designer must add an external N-channel MOSFET and a sense resistor to complete the hot-swap circuit. This allows the MOSFET to be sized for the actual load current and thermal dissipation."},{"question":"Is MAX5921AESA+ compatible with -48V systems?","answer":"Yes, the MAX5921AESA+ is specifically designed for -48V applications. Its supply voltage range of -80V to -20V covers the nominal -48V telecom rail and accommodates transients and battery float voltages."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX5921AESA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX5921AESA 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}}