{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC4253CGN#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC4253CGN~4PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC4253CGN~4PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC4253CGN%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC4253CGN#PBF Hot Swap Controller, Sequencer, -48V, Latched Fault, 800 µA, 16-SSOP (0.154\", 3.90mm Width), Surface Mount, Bulk.","salesMarkdown":"## Device identity and application domain The LTC4253CGN#PBF is a single-channel hot swap controller and sequencer designed for -48 V supply rails — the standard telecom backplane voltage. It controls an external N-channel MOSFET to ramp the output voltage on insertion, limiting inrush current and preventing the backplane from glitching. ## Protection and sequencing programmability Programmable protection features include an adjustable circuit breaker threshold, current limit, fault timeout, undervoltage lockout (UVLO), and overvoltage protection (OVP). These are set with external resistors and capacitors — no digital interface, which keeps the BOM simple and the response analog-fast. The latched fault behaviour means that once a fault (overcurrent, OVP, or UVLO violation) trips the breaker, the controller turns off the external FET and holds it off until the input power is cycled or the /ON pin is toggled. This is the safer choice for -48 V distribution where an automatic retry could re-energise a faulted card. Supply current is 800 µA typical — the controller's own draw is negligible against the load current the external FET switches, so it does not materially affect the thermal budget of the board. For telecom central-office or data-centre environments with controlled ambient this is fine; an outdoor cabinet or unventilated enclosure would need the industrial-temperature sibling from the same family.","metaTitle":"LTC4253CGN#PBF Hot Swap Controller, -48V, 16-SSOP","metaDescription":"Analog Devices LTC4253CGN#PBF active -48V hot swap controller with sequencer, latched fault, programmable UVLO/OVP/circuit breaker. 800 µA supply, 16-SSOP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Hot Swap Controller, Sequencer","Package":"Bulk","Features":"Latched Fault","Applications":"-48V","Mounting Type":"Surface Mount","Package / Case":"16-SSOP (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"800 µA","Voltage - Supply":"-48V","Internal Switch(s)":"No","Number of Channels":"1","Operating Temperature":"0°C ~ 70°C","Programmable Features":"Circuit Breaker, Current Limit, Fault Timeout, OVP, UVLO","Supplier Device Package":"16-SSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.94","stockQuantity":0,"priceTiers":[{"qty":61,"price":"$4.94000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/dd91d35fc418c6541acbc5d99b9a03ee.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the LTC4253CGN#PBF used for?","answer":"It is a -48 V hot swap controller and sequencer that manages the inrush current and provides programmable protection (circuit breaker, current limit, UVLO, OVP, fault timeout) for a single channel. It controls an external N-channel MOSFET and latches off on fault."},{"question":"Does the LTC4253CGN#PBF have an internal switch?","answer":"No — it requires an external N-channel MOSFET to pass the load current. The controller drives the gate and monitors the drain-source voltage for fault detection."},{"question":"How does the LTC4253CGN#PBF compare to the LTC4251BCS6-2#TRMPBF?","answer":"Both are single-channel -48 V hot swap controllers with latched fault and the same programmable features (circuit breaker, current limit, fault timeout, OVP, UVLO). The LTC4253CGN#PBF comes in a 16-SSOP package (tube), while the LTC4251BCS6-2#TRMPBF is in a smaller SOT-23-6 package on tape-and-reel. The LTC4253 adds a sequencing function not present on the LTC4251 — the /ON and PWRGD pins allow the controller to sequence multiple rails. The LTC4253CGN#PBF will not drop into a board laid out for the LTC4251 without a PCB change due to the different pinout and package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC4253CGN~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/LTC4253CGN~4PBF 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}}