{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX5921AESA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX5921AESA~3","canonicalUrl":"https://icboms.com/analog-devices/MAX5921AESA~3","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":"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. ## 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. 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. 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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/85b02b9f44c5ef61bf02e10018327143.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MAX5921AESA%2B/alternatives.json"},"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~3","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~3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-25T06:14:25.896Z","lastPublished":"2026-09-25T06:14:25.896Z","indexable":true}}