{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX5921FESA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX5921FESA","canonicalUrl":"https://icboms.com/analog-devices/MAX5921FESA","factsUrl":"https://icboms.com/api/mcp/products/MAX5921FESA%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX5921FESA+ Hot Swap Controller, -48V, 8-SOIC (0.154\", 3.90mm Width), Tube, Active, ROHS3 Compliant.","salesMarkdown":"## -48V hot swap controller in 8-SOIC The MAX5921FESA+ is a single-channel hot swap controller from Analog Devices, designed for -48V telecom and networking power distribution. It integrates programmable circuit breaker, current limit, overvoltage protection (OVP), and undervoltage lockout (UVLO) — the four protection axes that govern inrush and fault handling on a -48V rail. Operating from -80V to -20V supply with a quiescent current of 700 µA, the controller manages the external pass FET without an internal switch — the channel count is 1, and the fault response includes auto retry, fault timeout, and thermal limit. ## Protection programmability and fault behavior The four programmable features — circuit breaker threshold, current limit, OVP, and UVLO — let the designer set the trip points for the specific load and supply tolerance. The auto-retry behavior means the controller attempts to restart after a fault timeout, which is useful for transient line faults but requires careful coordination with downstream converters that may latch off. The thermal limit provides a secondary protection layer if the external FET exceeds its safe operating area — the controller shuts down and cools before retrying. The 700 µA supply current is the controller's own draw; the external pass FET's gate charge and switching losses are additional. ## Package, temperature grade, and compliance The tube packaging is typical for prototype and low-volume builds; for reel quantities, confirm the tape-and-reel variant.","metaTitle":"MAX5921FESA+ Hot Swap Controller, -48V, 8-SOIC, Active","metaDescription":"MAX5921FESA+ Analog Devices -48V hot swap controller in 8-SOIC. Active production, ROHS3 compliant. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"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":"What protection features does the MAX5921FESA+ offer?","answer":"It provides programmable circuit breaker, current limit, overvoltage protection (OVP), and undervoltage lockout (UVLO), plus auto retry, fault timeout, and thermal limit for fault handling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX5921FESA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX5921FESA 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}}