{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC4227IUFD-4#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC4227IUFD-4PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC4227IUFD-4PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC4227IUFD-4%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC4227IUFD-4#PBF, Hot Swap Controller and OR Controller, General Purpose, 1-Channel, 2.9V to 18V Supply, 2 mA Supply Current, Programmable Current Limit/Fault Timeout/Slew Rate, Auto Retry, UVLO, -40°C to 85°C, 20-WFQFN Exposed Pad, Surface Mount, Tube.","salesMarkdown":"## Hot swap and OR-ing control in one controller The Analog Devices LTC4227IUFD-4#PBF is a single-channel Hot Swap Controller combined with an OR Controller, designed for general-purpose power management where a board needs both inrush current limiting during insertion and a low-loss diode-OR function for redundant supply feeds. It operates from a 2.9V to 18V supply rail and draws 2 mA of supply current. The controller does not integrate the power switch — you supply the external N-channel MOSFET, which gives flexibility to size the pass element for the load current your design actually needs. ## Programmable inrush and fault handling Three programmable features — Current Limit, Fault Timeout, and Slew Rate — let you tune the startup ramp and the overcurrent response to match the downstream bulk capacitance and the upstream supply's sag tolerance. The Auto Retry feature means the controller will keep trying to restart after a fault clears, which is useful for systems that ride through temporary overloads rather than latching off. The UVLO (Undervoltage Lockout) threshold is also adjustable via the resistor divider on the UV pin, so you can set the turn-on voltage to prevent the MOSFET from operating in its linear region when the input rail is too low. ## Temperature grade and environment Rated for the industrial temperature range of -40°C to 85°C, this controller suits outdoor telecom cabinets, factory-floor motor drives, and base-station line cards where the ambient sees seasonal extremes. The operating range covers the typical -40°C cold soak and 85°C internal enclosure temperature without needing a commercial-grade workaround. ## Lifecycle and sourcing posture The LTC4227IUFD-4#PBF carries an Active product status and is ROHS3 compliant.","metaTitle":"LTC4227IUFD-4#PBF Hot Swap Controller, OR Controller","metaDescription":"LTC4227IUFD-4#PBF from Analog Devices. Hot Swap Controller and OR Controller, 2.9V to 18V supply, 2 mA supply current, -40°C to 85°C, 20-QFN.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Hot Swap Controller, OR Controller","Package":"Tube","Features":"Auto Retry, UVLO","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"20-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Supply":"2 mA","Voltage - Supply":"2.9V ~ 18V","Internal Switch(s)":"No","Number of Channels":"1","Operating Temperature":"-40°C ~ 85°C","Programmable Features":"Current Limit, Fault Timeout, Slew Rate","Supplier Device Package":"20-QFN (4x5)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.3","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.30000","currency":"USD"},{"qty":10,"price":"$10.21000","currency":"USD"},{"qty":25,"price":"$9.73520","currency":"USD"},{"qty":100,"price":"$8.45290","currency":"USD"},{"qty":250,"price":"$8.07296","currency":"USD"},{"qty":500,"price":"$7.36064","currency":"USD"},{"qty":1000,"price":"$6.72000","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/4227fa.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does LTC4227IUFD-4#PBF have an internal switch?","answer":"No, the LTC4227IUFD-4#PBF does not integrate the power switch internally. You must add an external N-channel MOSFET to handle the load current."},{"question":"Can LTC4227IUFD-4#PBF be used for inrush current limiting?","answer":"Yes. The controller provides programmable Current Limit, Fault Timeout, and Slew Rate features specifically to control inrush current during board insertion into a live backplane."},{"question":"What are the alternatives to LTC4227IUFD-4#PBF?","answer":"Within the same LTC4227 family, the LTC4227IUFD-2#PBF is a functional peer with identical features, package, and temperature range. The LTC4227CGN-2#PBF is a commercial-temperature (0°C to 70°C) variant in an SSOP package. The LTC4227IGN-2#PBF offers the industrial temperature range in an SSOP package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC4227IUFD-4PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC4227IUFD-4PBF 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}}