{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC4371IDD#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC4371IDDPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC4371IDDPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC4371IDD%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC4371IDD#PBF, N+1 ORing Controller, N-Channel FET, 300 µA supply, 4.5V to 16V supply range, -40°C to 85°C, 10-WFDFN Exposed Pad, Surface Mount, Tube.","salesMarkdown":"## What this ORing controller does in a -48V backplane The LTC4371IDD#PBF is an N+1 ORing controller from Analog Devices, designed to replace power Schottky diode-OR arrays in -48V distributed power systems and AdvancedTCA® shelves. It drives an external N-channel MOSFET to create a low-loss ideal-diode path between redundant supply feeds. The controller itself draws only 300 µA from a local 4.5V to 16V bias rail — it does not run off the -48V bus directly. The 4.5V to 16V supply range means you need a separate bias supply (e.g., a small isolated DC-DC or a linear regulator off the -48V input). This is common in telecom designs, but if your board lacks a local 12V rail, budget for a bias converter. The 2:1 input-to-output ratio means the controller can manage two input feeds (e.g., two -48V rectifier shelves) and steer the higher voltage to the output. No internal switch — the external N-channel MOSFET handles the current path, so the Rds(on) and thermal design are in your hands. ## Package and layout — the 10-DFN exposed pad The LTC4371IDD#PBF comes in a 10-lead WFDFN with exposed pad, 3x3 mm body (supplier device package 10-DFN). The 0.50 mm pitch demands careful solder paste stencil design; a 4-layer board with a solid ground plane under the pad is the standard approach.","metaTitle":"LTC4371IDD#PBF N+1 ORing Controller, 300 µA, -40°C to 85°C","metaDescription":"LTC4371IDD#PBF N+1 ORing Controller from Analog Devices. 300 µA supply, 4.5V-16V range, -40°C to 85°C, 10-DFN. Active production.","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":"-48V Dist Power Systems, AdvancedTCA® Systems","Mounting Type":"Surface Mount","Package / Case":"10-WFDFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Supply":"300 µA","Voltage - Supply":"4.5V ~ 16V","Internal Switch(s)":"No","Ratio - Input:Output":"2:1","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"10-DFN (3x3)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.32","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$8.32000","currency":"USD"},{"qty":10,"price":"$7.51300","currency":"USD"},{"qty":25,"price":"$7.16400","currency":"USD"},{"qty":100,"price":"$6.22040","currency":"USD"},{"qty":250,"price":"$5.94080","currency":"USD"},{"qty":500,"price":"$5.41664","currency":"USD"},{"qty":1000,"price":"$4.71771","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5f7c41323a387f0bde69af4e368939b8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between LTC4371IDD#PBF and LTC4370?","answer":"The LTC4370 is a different ORing controller with a wider supply range and higher quiescent current. The LTC4371IDD#PBF is optimised for -48V telecom systems with a 300 µA supply current and a 2:1 input-to-output ratio. For a pin-compatible alternative within the same family, consider the LTC4371IMS#PBF (same function, different temperature grade or package variant)."},{"question":"What is LTC4371IDD#PBF used for?","answer":"It is an N+1 ORing controller for -48V distributed power systems and AdvancedTCA® equipment. It provides redundant power path steering with a low-loss external N-channel MOSFET, replacing power Schottky diodes."},{"question":"Is LTC4371IDD#PBF a hot-swap controller?","answer":"No. The LTC4371IDD#PBF is an ORing controller, not a hot-swap controller. It manages the steering of redundant power feeds, not the inrush current limiting or circuit-breaker function that a hot-swap controller provides."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC4371IDDPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC4371IDDPBF 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}}