{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX5943EEEE+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX5943EEEE","canonicalUrl":"https://icboms.com/analog-devices/MAX5943EEEE","factsUrl":"https://icboms.com/api/mcp/products/MAX5943EEEE%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX5943EEEE+, N+1 ORing Controller, N-Channel FET, 7.5V to 37V supply, 1.3 mA supply current, 100 ns turn-off delay, -40°C to 85°C, 16-QSOP, Surface Mount, RoHS3.","salesMarkdown":"## What this ORing controller does on your power rail The Analog Devices MAX5943EEEE+ is an N+1 ORing controller designed to replace Schottky diode ORing in redundant power-supply architectures. It drives an external N-channel MOSFET to steer current from the active supply rail and blocks reverse current when that supply fails or is shorted. The part is rated for FireWire applications but suits any redundant 7.5V to 37V bus — telecom, industrial, or point-of-load distribution where a diode drop costs too much heat and voltage headroom. ## 100 ns turn-off — why it matters for fault blocking The 100 ns turn-off delay is the time from sensing a reverse-current condition to pulling the FET gate low. In a 24V system with a shorted input, every nanosecond of delay lets the output capacitor dump energy backward through the FET. ## Supply range and temperature — where it lives on the board Operating from 7.5V to 37V, the MAX5943EEEE+ covers the common 12V and 24V industrial rails with margin for transients. The -40°C to 85°C industrial temperature range means it is at home in a motor drive cabinet, an outdoor base station, or an engine-bay ECU — not just an air-conditioned rack. No internal switch means the external FET selection is up to you; the controller just handles the gate drive and fault sensing. ## Package and footprint for the layout engineer Housed in a 16-QSOP (3.90 mm wide SSOP body), this is a fine-pitch surface-mount part. The 0.154-inch body width is standard for SSOP-16, so the footprint matches any generic SSOP-16 land pattern. ## Lifecycle and sourcing posture The MAX5943EEEE+ carries an Active lifecycle status and is RoHS3 compliant.","metaTitle":"MAX5943EEEE+ N+1 ORing Controller, 7.5V–37V, 100ns turn-off","metaDescription":"MAX5943EEEE+ N+1 ORing Controller from Analog Devices. 7.5V to 37V supply, 100ns turn-off, industrial temp -40°C to 85°C, 16-QSOP. Active, RoHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"N+1 ORing Controller","Package":"Tube","FET Type":"N-Channel","Applications":"FireWire®","Mounting Type":"Surface Mount","Package / Case":"16-SSOP (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"1.3 mA","Delay Time - OFF":"100 ns","Voltage - Supply":"7.5V ~ 37V","Internal Switch(s)":"No","Ratio - Input:Output":"N:1","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"16-QSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.49","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.49000","currency":"USD"},{"qty":10,"price":"$4.92700","currency":"USD"},{"qty":25,"price":"$4.65760","currency":"USD"},{"qty":100,"price":"$4.03650","currency":"USD"},{"qty":250,"price":"$3.82952","currency":"USD"},{"qty":500,"price":"$3.43620","currency":"USD"},{"qty":1000,"price":"$3.10500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a883e4fc0dcc789211deb18cd293722b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is an N+1 ORing controller used for?","answer":"An N+1 ORing controller replaces a Schottky diode in redundant power systems. It drives an external N-channel FET to pass current from the active supply and block reverse current when that supply fails, reducing heat and voltage drop compared to a diode OR."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX5943EEEE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX5943EEEE 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}}