{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC1421IG-2.5#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC1421IG-2.5PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC1421IG-2.5PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC1421IG-2.5%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC1421IG-2.5#PBF Hot Swap Controller, 2-Channel, 3V~12V Supply, Latched Fault, UVLO, Programmable Slew Rate, Industrial Temp -40°C~85°C, 24-SSOP Package.","salesMarkdown":"## Two-channel hot swap controller for 3V to 12V backplanes The Analog Devices LTC1421IG-2.5#PBF is a two-channel hot swap controller designed to manage inrush current and provide fault protection on 3V to 12V supply rails. It integrates undervoltage lockout (UVLO) and a latched fault response, with programmable circuit breaker, fault timeout, and slew rate control to tailor the turn-on profile to the load capacitance. No internal pass FETs are included — the controller drives external N-channel MOSFETs, giving the designer flexibility to size the power path for the actual load current. The part is specified over the industrial temperature range of -40°C to 85°C and comes in a 24-SSOP surface-mount package. ## Programmable inrush and fault handling Three programmable features — circuit breaker threshold, fault timeout, and slew rate — let the designer set the soft-start ramp and overcurrent trip point to match the board's bulk capacitance and load profile. The circuit breaker can be configured for a latched-off or auto-retry response; this part uses a latched fault, so a fault condition holds the output off until the supply is cycled or the part is reset. UVLO ensures the controller stays off until the input rail is above the programmed threshold, preventing partial turn-on during brownout conditions. Supply current draw is 1.5 mA typical, making it suitable for always-on backplane monitoring. ## Active production — no end-of-life concern The LTC1421IG-2.5#PBF carries an active lifecycle status from the manufacturer. For dual-sourcing or alternate package options, the LTC1647-3IGN#PBF offers a similar two-channel hot swap controller with auto-retry instead of latched fault, also in a 24-SSOP package with the same programmable features. The LTC1645IS8#PBF adds sequencing capability but uses an 8-pin SOIC package with only latched fault and no fault timeout.","metaTitle":"LTC1421IG-2.5#PBF Hot Swap Controller, 3V–12V, 2-Ch, 24-SSOP","metaDescription":"LTC1421IG-2.5#PBF hot swap controller from Analog Devices. 2-channel, 3V–12V supply, latched fault, UVLO, programmable inrush. Industrial temp -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Hot Swap Controller","Package":"Bulk","Features":"Latched Fault, UVLO","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"24-SSOP (0.209\\\", 5.30mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"1.5 mA","Voltage - Supply":"3V ~ 12V","Internal Switch(s)":"No","Number of Channels":"2","Operating Temperature":"-40°C ~ 85°C","Programmable Features":"Circuit Breaker, Fault Timeout, Slew Rate","Supplier Device Package":"24-SSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.42","stockQuantity":0,"priceTiers":[{"qty":27,"price":"$11.42000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a5e1e689b5da966996bde32041550832.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can I replace LTC1421IG-2.5#PBF with LTC1422?","answer":"Not directly. The LTC1422 is a single-channel hot swap controller in an 8-pin SOIC package. The LTC1421IG-2.5#PBF is a two-channel controller in a 24-SSOP package. The LTC1422 also uses auto-retry fault response instead of latched fault. If you need two independent channels, the LTC1647-3IGN#PBF is a closer functional match in the same 24-SSOP footprint, with auto-retry instead of latched fault."},{"question":"Can LTC1421IG-2.5#PBF handle a 3A load?","answer":"The controller itself does not carry the load current — it drives external N-channel MOSFETs that you select. The 1.5 mA supply current is for the controller's own bias. The load current capability is determined by the external FETs, the PCB thermal management, and the programmed circuit breaker threshold. For a 3A load, select a MOSFET with adequate RDS(on) and power dissipation margin for your ambient temperature."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC1421IG-2.5PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC1421IG-2.5PBF 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}}