{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC4359IS8#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC4359IS8PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC4359IS8PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC4359IS8%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC4359IS8#PBF, N+1 ORing Controller, N-Channel FET, 4V to 80V Supply, 200 µs ON Delay, 300 ns OFF Delay, 150 µA Supply Current, 8-SOIC Package, -40°C to 85°C.","salesMarkdown":"## 4V to 80V — one controller for 12V, 24V, and 48V rails The LTC4359IS8#PBF is an N-channel N+1 ORing controller from Analog Devices that replaces a power Schottky diode with a low-Rds(on) MOSFET to reduce forward drop and heat in redundant power architectures. Its 4V to 80V supply range lets a single BOM line cover 12V automotive, 24V industrial, and 48V telecom backplane rails without a separate pre-regulator or supply-rail divider. ## 300 ns off-delay — why it matters for the MOSFET The 300 ns turn-off delay is the headline protection spec. When the input rail dips or shorts, the controller must pull the MOSFET gate low before reverse current flows from the output capacitor back through the FET body diode. A 300 ns window means the external MOSFET's SOA at the rail voltage must survive that interval at the fault current — a 60V-rated FET on a 48V rail has roughly 2× derating, which is comfortable. The 200 µs turn-on delay prevents cross-conduction during power-up when multiple supplies are ramping; the controller waits until the input is stable before enabling the FET. The ROHS3 compliance is confirmed. ## Package and temperature grade That covers most indoor telecom and industrial enclosures; for under-hood automotive or outdoor base stations that see 105°C+ ambient, the LTC4359HMS8#PBF variant extends to 125°C. The 150 µA supply current is the quiescent draw — negligible in a 10A+ ORing path, but worth noting for always-on battery-backed supplies where every microamp counts.","metaTitle":"LTC4359IS8#PBF N+1 ORing Controller, 4V-80V, 300ns off","metaDescription":"LTC4359IS8#PBF N-channel ideal diode controller from Analog Devices. Wide 4V to 80V supply, 300 ns fast turn-off, 150 µA supply current.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Type":"N+1 ORing Controller","Package":"Tube","FET Type":"N-Channel","Applications":"Automotive, Redundant Power Supplies, Telecom Infrastructure","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Delay Time - ON":"200 µs","lifecycle_stage":"eol_hot","Current - Supply":"150 µA","Delay Time - OFF":"300 ns","Voltage - Supply":"4V ~ 80V","Internal Switch(s)":"No","Ratio - Input:Output":"N:1","Operating Temperature":"-40°C ~ 85°C (TA)","Current - Output (Max)":"220µA","Supplier Device Package":"8-SO"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.67","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$7.67000","currency":"USD"},{"qty":10,"price":"$6.92700","currency":"USD"},{"qty":25,"price":"$6.60480","currency":"USD"},{"qty":100,"price":"$5.73500","currency":"USD"},{"qty":250,"price":"$5.47724","currency":"USD"},{"qty":500,"price":"$4.99394","currency":"USD"},{"qty":1000,"price":"$4.34956","currency":"USD"}]},"links":{"datasheetUrl":"http://www.analog.com/media/en/technical-documentation/data-sheets/ltc4359.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LTC4359IS8#PBF RoHS compliant?","answer":"Yes, the part is ROHS3 compliant."},{"question":"What is the difference between LTC4359IS8#PBF and LTC4359IMS8#PBF?","answer":"Both are the same N+1 ORing controller with identical parametrics — 4V to 80V supply, 300 ns off-delay, 200 µs on-delay, N-channel FET drive. The MS8 suffix part is the drop-in replacement for applications requiring the wider temperature range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC4359IS8PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC4359IS8PBF 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}}