{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC4251IS6#TRMPBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC4251IS6~4TRMPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC4251IS6~4TRMPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC4251IS6%23TRMPBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC4251IS6#TRMPBF Hot Swap Controller, -48V, Latched Fault, SOT-23-6 Thin, TSOT-23-6, Tape & Reel.","salesMarkdown":"## Hot Swap controller for -48V telecom backplanes The LTC4251IS6#TRMPBF is a single-channel Hot Swap Controller from Analog Devices, designed for -48V applications. It manages inrush current and provides fault protection for boards plugged into a live backplane, preventing glitches and damage on the upstream supply. Operating from a -75V to -43V supply rail, it draws only 800 µA from the bus, keeping the quiescent load negligible in a typical telecom shelf where dozens of line cards share a -48V feed. ## TSOT-23-6 footprint and board integration Housed in a 6-lead TSOT-23-6 package (SOT-23-6 Thin), the part mounts on a standard surface-mount footprint. The small outline suits dense line-card layouts where board real estate is tight, but the thermal dissipation is managed externally since the controller does not carry the load current itself — it drives an external N-channel MOSFET. ## Programmable protection and fault handling The controller integrates a programmable circuit breaker, current limit, fault timeout, overvoltage protection (OVP), and undervoltage lockout (UVLO). These are set with external resistors and capacitors, letting the board designer tune the response to match the load capacitance and the upstream breaker coordination. A latched fault response means that after a fault event (overcurrent or overvoltage), the controller shuts off the external MOSFET and stays off until the input power is cycled or the ON pin is toggled — a deliberate choice for systems where automatic retry could mask a persistent fault.","metaTitle":"Analog Devices LTC4251IS6#TRMPBF Hot Swap Controller, -48V","metaDescription":"Active-production Analog Devices LTC4251IS6#TRMPBF Hot Swap Controller, -48V application, SOT-23-6. Sourced to order per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Hot Swap Controller","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Latched Fault","Applications":"-48V","Mounting Type":"Surface Mount","Package / Case":"SOT-23-6 Thin, TSOT-23-6","lifecycle_stage":"eol_hot","Current - Supply":"800 µA","Voltage - Supply":"-75V ~ -43V","Internal Switch(s)":"No","Number of Channels":"1","Operating Temperature":"-40°C ~ 85°C","Programmable Features":"Circuit Breaker, Current Limit, Fault Timeout, OVP, UVLO","Supplier Device Package":"TSOT-23-6"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.86","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.86000","currency":"USD"},{"qty":10,"price":"$6.19900","currency":"USD"},{"qty":25,"price":"$5.91040","currency":"USD"},{"qty":100,"price":"$5.13210","currency":"USD"},{"qty":250,"price":"$4.90144","currency":"USD"},{"qty":500,"price":"$4.46896","currency":"USD"},{"qty":1000,"price":"$4.08000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"How do I get current pricing and availability for LTC4251IS6#TRMPBF?","answer":"This part is sourced to order against an RFQ through independent and authorized distribution channels."},{"question":"Will LTC4251IS6#TRMPBF drop into a panel that was specified around LTC4251BIS6#TRMPBF without rewiring?","answer":"Yes. The LTC4251BIS6#TRMPBF is a functional peer with the same package (TSOT-23-6), same -48V application, same latched fault feature set, and the same programmable protection options. The pinout is identical, so a board designed for the B-variant accepts the IS6 without a layout change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC4251IS6~4TRMPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC4251IS6~4TRMPBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}