{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC4355IDE#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC4355IDEPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC4355IDEPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC4355IDE%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC4355IDE#PBF, N+1 ORing Controller, N-Channel, 48V/-48V supply, 300 ns OFF delay, 2 mA supply current, 2:1 input:output ratio, -40°C to 85°C, 14-WFDFN Exposed Pad, Tube.","salesMarkdown":"## N+1 ORing controller for -48V telecom and AdvancedTCA backplanes The LTC4355IDE#PBF is an N+1 ORing controller from Analog Devices, designed to manage N-channel MOSFETs in -48V distributed power systems and AdvancedTCA® equipment. It handles a 48V or -48V supply rail and coordinates two input sources to one output, with a 300 ns turn-off delay that catches reverse-current faults before they reach the load. The controller itself draws 2 mA from the rail and does not integrate the power switch — you supply the external N-channel FETs, which keeps the heat off this 14-DFN package. ## 300 ns OFF delay — why it matters for the backplane The 300 ns turn-off delay is the headline spec for this controller. When one input rail droops or shorts, the controller must open the FET before reverse current flows from the good rail into the fault. At 48V, every nanosecond of delay bleeds energy into the fault path. 300 ns is fast enough for most -48V telecom shelves; if your system demands even tighter timing, the LTC4355 family shares the same die but the package and temperature grade differ — the LTC4355HMS#PBF extends the operating range to 125°C, which matters for unventilated cabinets.","metaTitle":"LTC4355IDE#PBF N+1 ORing Controller, 48V, 300ns OFF, 14-DFN","metaDescription":"LTC4355IDE#PBF N+1 ORing Controller for -48V distributed power and AdvancedTCA systems. 300 ns turn-off, 2 mA supply, 14-DFN package. 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":"-48V Dist Power Systems, AdvancedTCA® Systems","Mounting Type":"Surface Mount","Package / Case":"14-WFDFN Exposed Pad","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 ~ 85°C","Supplier Device Package":"14-DFN (4x3)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.21","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.21000","currency":"USD"},{"qty":10,"price":"$8.31800","currency":"USD"},{"qty":25,"price":"$7.93160","currency":"USD"},{"qty":100,"price":"$6.88680","currency":"USD"},{"qty":250,"price":"$6.57728","currency":"USD"},{"qty":500,"price":"$5.99696","currency":"USD"},{"qty":1000,"price":"$5.47500","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/4355ff.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the LTC4355IDE#PBF replacement?","answer":"There is no direct replacement needed — the part is active. For a functional second source with the same core specs (N+1 ORing, 48V, 300 ns OFF), the LTC4355IS#PBF is pin-compatible but uses a different package variant. Verify the footprint before swapping."},{"question":"What is LTC4355IDE#PBF used for?","answer":"It is an N+1 ORing controller that manages external N-channel MOSFETs to combine or select between two -48V input sources, providing redundant power to a single load. Typical applications include telecom base stations, AdvancedTCA® shelves, and any -48V distributed power system requiring fault isolation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC4355IDEPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC4355IDEPBF 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}}