{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC4355HMS#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC4355HMSPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC4355HMSPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC4355HMS%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC4355HMS#PBF N+1 ORing Controller, -48V supply, 2:1 input:output ratio, 300ns off delay, N-channel FET drive, 16-MSOP package, tube.","salesMarkdown":"## What the -48V rail and 300 ns turn-off mean for a redundant supply The LTC4355HMS#PBF is an N+1 ORing controller designed for -48V distributed power systems and AdvancedTCA® platforms — the standard backplane voltage in telecom and central-office equipment. It drives an external N-channel MOSFET to OR two input supplies, so if one rail drops or shorts, the other holds the load without a diode drop eating into the -48V margin. The 300 ns turn-off delay means the controller reacts to a fault fast enough to prevent reverse current from the good rail bleeding into the failed one — critical in a -48V system where the load capacitance can hold several joules. The 2:1 input-to-output ratio handles two feeds, typical of a dual-feed AdvancedTCA shelf. The 16-MSOP package (3.00 mm width, 0.118\" body) is a compact footprint for a crowded backplane card; the 16-TFSOP case code is the same mechanical outline. No internal switches — the controller drives an external N-channel MOSFET, so the designer selects the FET that matches the load current and thermal budget. The 2 mA supply current is the controller's own draw; the FET gate drive comes from the -48V rail through an internal charge pump, so no separate bias supply is needed.","metaTitle":"LTC4355HMS#PBF N+1 ORing Controller, -48V, 16-MSOP","metaDescription":"LTC4355HMS#PBF N+1 ORing Controller from Analog Devices. Active production, -48V supply, 300ns turn-off, -40°C to 125°C. Sourced to order against RFQ.","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":"-48V Dist Power Systems, AdvancedTCA® Systems","Mounting Type":"Surface Mount","Package / Case":"16-TFSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"2 mA","Delay Time - OFF":"300 ns","Voltage - Supply":"48V, -48V","Internal Switch(s)":"No","Ratio - Input:Output":"2:1","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"16-MSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.52","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.52000","currency":"USD"},{"qty":10,"price":"$8.59900","currency":"USD"},{"qty":37,"price":"$8.19919","currency":"USD"},{"qty":111,"price":"$7.11928","currency":"USD"},{"qty":259,"price":"$6.79931","currency":"USD"},{"qty":518,"price":"$6.19938","currency":"USD"},{"qty":1036,"price":"$5.39946","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the LTC4355HMS#PBF used for?","answer":"It is an N+1 ORing controller for -48V distributed power systems and AdvancedTCA® equipment. It drives an external N-channel MOSFET to combine two input supplies into one output, providing redundancy without the forward voltage loss of a Schottky diode."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC4355HMSPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC4355HMSPBF 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}}