{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC4373IMS8#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC4373IMS8PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC4373IMS8PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC4373IMS8%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC4373IMS8#PBF, N+1 ORing Controller, N-Channel FET, 2.5V ~ 80V Supply, 5 µA Supply Current, 500 µs ON Delay, 500 ns OFF Delay, -40°C ~ 85°C, 8-MSOP, Tube.","salesMarkdown":"## N+1 ORing controller for 2.5V to 80V rails The LTC4373IMS8#PBF is an N+1 ORing controller from Analog Devices that drives an external N-channel MOSFET to create an ideal-diode function for redundant power supply architectures. It operates from a 2.5V to 80V supply range, covering 3.3V logic rails through 48V telecom buses and 12V/24V automotive systems. The controller uses a 500 µs turn-on delay to let the incoming supply stabilise before connecting the load, and a 500 ns turn-off delay to prevent reverse current during source transients. ## 5 µA quiescent current — always-on without thermal penalty The standout parametric on this part is the 5 µA supply current — an order of magnitude below typical ORing controllers that draw tens to hundreds of microamps. This matters for always-on redundant supplies where the ORing controller sits powered even when the main converter is off. In a 48V telecom system, 5 µA translates to 240 µW of standing loss per controller, negligible in the system thermal budget. The 10 µA maximum output current from the gate drive is sized for the external N-channel MOSFET's gate charge, not for driving a load directly. ## Automotive and redundant supply applications The 80V absolute maximum input covers 24V truck systems with load-dump transients, though the nominal operating range is 2.5V to 80V. The 8-MSOP package (3.00 mm width) keeps the board footprint small — useful when placing one controller per redundant rail in a multi-rail ORing array.","metaTitle":"LTC4373IMS8#PBF N+1 ORing Controller, 2.5V-80V, 5µA","metaDescription":"LTC4373IMS8#PBF N+1 ORing controller from Analog Devices. 2.5V to 80V supply, 5 µA quiescent current, drives external N-channel MOSFET.","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","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","Delay Time - ON":"500 µs","lifecycle_stage":"eol_hot","Current - Supply":"5 µA","Delay Time - OFF":"500 ns","Voltage - Supply":"2.5V ~ 80V","Internal Switch(s)":"No","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C ~ 85°C (TA)","Current - Output (Max)":"10µA","Supplier Device Package":"8-MSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.49","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.49000","currency":"USD"},{"qty":10,"price":"$8.56900","currency":"USD"},{"qty":25,"price":"$8.17040","currency":"USD"},{"qty":100,"price":"$7.09440","currency":"USD"},{"qty":250,"price":"$6.77552","currency":"USD"},{"qty":500,"price":"$6.17768","currency":"USD"},{"qty":1000,"price":"$5.64000","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/ltc4372-4373.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How does LTC4373IMS8#PBF compare to the LTC4352IMS#PBF?","answer":"The LTC4352IMS#PBF is a similar N+1 ORing controller but targets higher-speed switching with 250 ns turn-on and 200 ns turn-off delays versus the LTC4373's 500 µs / 500 ns. The LTC4352 draws 1.4 mA supply current versus the LTC4373's 5 µA — the LTC4373 is the low-power choice for always-on systems where microsecond switching speed is not required. Both use an external N-channel MOSFET and come in similar MSOP packages."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC4373IMS8PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC4373IMS8PBF 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}}