{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC4231HMS-1#WPBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC4231HMS-1~4WPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC4231HMS-1~4WPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC4231HMS-1%23WPBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC4231HMS-1#WPBF Hot Swap Controller, Automotive AEC-Q100, 2.7V to 36V supply, 1 channel, Latched Fault, 12-TSSOP / 12-MSOP, -40°C to 125°C.","salesMarkdown":"## Hot swap controller with AEC-Q100 grade The LTC4231HMS-1#WPBF is a single-channel hot swap controller from Analog Devices, part of the Automotive AEC-Q100 series. It manages inrush current and protects against supply faults when a board is inserted live into a backplane or battery bus. ## Programmable protection set Six programmable features are built in: circuit breaker threshold, current limit, fault timeout, overvoltage protection (OVP), slew rate control, and undervoltage lockout (UVLO). This means the controller can be tuned to the specific load capacitance and supply impedance of the target system — no external comparator or timer IC needed. The latched fault behaviour (LTC4231HMS-1 variant) shuts off the external N-channel MOSFET on a fault and holds it off until the supply is cycled or the ON pin is toggled. This is the preferred response for safety-critical rails where an auto-retry could cause repeated stress. No internal switch is provided — the controller drives an external N-channel pass FET. The designer selects the FET based on the load current and SOA requirements, keeping the thermal dissipation off the controller package. ## Package and board-fit note Supplied in a 12-lead TSSOP (3.00 mm width) and also specified as the supplier device package 12-MSOP. The two packages share the same 0.65 mm pitch footprint and are functionally identical — the MSOP is a thinner-body variant of the same leadframe. The 0.118-inch body width fits in tight channel spacing on a multi-rail hot-swap card.","metaTitle":"LTC4231HMS-1#WPBF Hot Swap Controller, AEC-Q100","metaDescription":"Analog Devices LTC4231HMS-1#WPBF Hot Swap Controller, AEC-Q100, 2.7V-36V supply, latched fault, -40°C to 125°C. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Hot Swap Controller","Series":"Automotive, AEC-Q100","Package":"Tube","Features":"Latched Fault","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"12-TSSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.7V ~ 36V","Internal Switch(s)":"No","Number of Channels":"1","Operating Temperature":"-40°C ~ 125°C (TA)","Programmable Features":"Circuit Breaker, Current Limit, Fault Timeout, OVP, Slew Rate, UVLO","Supplier Device Package":"12-MSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.79","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.79000","currency":"USD"},{"qty":10,"price":"$8.84300","currency":"USD"},{"qty":25,"price":"$8.43120","currency":"USD"},{"qty":100,"price":"$7.32080","currency":"USD"},{"qty":250,"price":"$6.99176","currency":"USD"},{"qty":500,"price":"$6.37484","currency":"USD"},{"qty":1000,"price":"$5.82000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Will LTC4231HMS-1#WPBF drop into a board designed for LTC4231HUD-1#PBF without rewiring?","answer":"No — the LTC4231HUD-1#PBF is in a 12-QFN (3 mm × 3 mm) package with a different footprint and thermal pad. The LTC4231HMS-1#WPBF uses a 12-TSSOP/MSOP with 0.65 mm pitch gull-wing leads. A board spin or adapter is required; they are not pin-compatible."},{"question":"What is the difference between LTC4231HMS-1#WPBF and LTC4231HMS-2#PBF?","answer":"The -1 variant (this part) uses latched fault response — the controller stays off after a fault until reset. The -2 variant (LTC4231HMS-2#PBF) uses auto-retry, periodically attempting to restart. Both share the same package, supply range, and programmable feature set. Choose -1 for safety-critical rails where a persistent fault must hold the load off."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC4231HMS-1~4WPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC4231HMS-1~4WPBF 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}}