{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMS3655NQURNLRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMS3655NQURNLRQ1","canonicalUrl":"https://icboms.com/texas-instruments/LMS3655NQURNLRQ1","factsUrl":"https://icboms.com/api/mcp/products/LMS3655NQURNLRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Automotive, AEC-Q100 series, LMS3655NQURNLRQ1, Step-Down Buck Regulator, 3.3V Fixed Output, 5.5A, 3.9V-36V Input, 400kHz, 22-VFQFN Wettable Flank.","salesMarkdown":"## Automotive buck regulator with 5.5 A continuous output The LMS3655NQURNLRQ1 is a step-down buck regulator from Texas Instruments, part of the Automotive, AEC-Q100 series. It delivers a fixed 3.3 V output at up to 5.5 A continuous from a 3.9 V to 36 V input rail. ## Input range and thermal envelope for under-hood duty The 3.9 V minimum input lets it operate through a cold-crank event on a nominal 12 V battery, while the 36 V maximum covers load-dump transients without an external clamp. The -40°C to 150°C junction temperature range matches AEC-Q100 Grade 0 requirements — the part survives under-hood ambient temperatures where the engine bay sees 105°C on a summer grade. Switching frequency is fixed at 400 kHz, a practical midpoint that keeps the inductor small while staying below the AM broadcast band. The part does not include a synchronous rectifier — the external Schottky diode adds a predictable forward drop but avoids shoot-through concerns at high input voltage. ## 22-VQFN package with wettable flank for AOI This is a practical advantage for automotive production lines where bottom-only terminations hide voids under the package. ## Active production and sourcing posture Pricing and lead time are confirmed at quote against the BOM quantity.","metaTitle":"LMS3655NQURNLRQ1 Buck Regulator, 5.5A, 36V Input, AEC-Q100","metaDescription":"Texas Instruments LMS3655NQURNLRQ1 automotive buck regulator, 3.3V fixed output, 5.5A, 3.9-36V input, 400kHz, 22-VQFN. Active production, AEC-Q100 qualified.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Output Type":"Fixed","Mounting Type":"Surface Mount, Wettable Flank","Package / Case":"22-VFQFN","lifecycle_stage":"eol_hot","Current - Output":"5.5A","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"400kHz","Operating Temperature":"-40°C ~ 150°C (TJ)","Synchronous Rectifier":"No","Voltage - Input (Max)":"36V","Voltage - Input (Min)":"3.9V","Supplier Device Package":"22-VQFN-HR (5x4)","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.55","priceTiers":[{"qty":1,"price":"$6.55000","currency":"USD"},{"qty":10,"price":"$5.92000","currency":"USD"},{"qty":25,"price":"$5.64400","currency":"USD"},{"qty":100,"price":"$4.90080","currency":"USD"},{"qty":250,"price":"$4.68056","currency":"USD"},{"qty":500,"price":"$4.26756","currency":"USD"},{"qty":1000,"price":"$3.71690","currency":"USD"},{"qty":3000,"price":"$3.57924","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/dfc4230dfe734a43640ab39f1344ba78.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LMS3655NQURNLRQ1/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for LMS3655NQURNLRQ1?","answer":"Submit an RFQ against your BOM quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMS3655NQURNLRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMS3655NQURNLRQ1 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}}