{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM73605QURNPRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM73605QURNPRQ1","canonicalUrl":"https://icboms.com/texas-instruments/LM73605QURNPRQ1","factsUrl":"https://icboms.com/api/mcp/products/LM73605QURNPRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM73605QURNPRQ1, Automotive AEC-Q100, Step-Down Buck Regulator, Adjustable Output, 5A, 3.5V-36V Input, 350kHz-2.2MHz, -40°C to 125°C, 30-WQFN (6x4) Wettable Flank.","salesMarkdown":"## What this 5A automotive buck brings to the board The switching frequency is programmable from 350 kHz to 2.2 MHz. The integrated synchronous rectifier eliminates the external catch diode. ## Key specs that drive the BOM decision The 5A output is the headline number for inductor and output capacitor sizing. At 5A continuous, you need a low-DCR inductor rated for at least 6A saturation and output caps with enough ripple-current headroom. The 36V maximum input means it survives load-dump transients on a 12V automotive rail without external clamping, but on a 24V system check the margin against worst-case alternator surge. The junction temperature range of -40°C to 125°C covers under-hood and cabin environments. At 125°C junction, derate the output current per the datasheet thermal curves — the 30-WQFN exposed pad needs a solid thermal via pattern under the pad to keep the die cool at full load. The wettable-flank package (30-WQFN with exposed pad) is a practical advantage for automotive production: it allows automated optical inspection of the solder joints on the bottom-side terminals, which a standard QFN hides. That saves a manual X-ray step in the line. ## Lifecycle and sourcing posture No end-of-life notification or last-time-buy schedule is on record. ## Package and mounting — what the line needs to know The part ships in Tape & Reel or Cut Tape. The 30-WQFN (6x4 mm) exposed-pad package has an MSL rating that should be verified before reflow.","metaTitle":"TI LM73605QURNPRQ1 Buck Regulator, 5A, AEC-Q100, 36V Input","metaDescription":"LM73605QURNPRQ1 automotive step-down regulator, 5A output, 3.5V-36V input, 350kHz-2.2MHz, -40°C to 125°C, wettable-flank QFN.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Output Type":"Adjustable","Mounting Type":"Surface Mount, Wettable Flank","Package / Case":"30-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Output":"5A","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"350kHz ~ 2.2MHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"36V","Voltage - Input (Min)":"3.5V","Voltage - Output (Max)":"34.2V","Supplier Device Package":"30-WQFN (6x4)","Voltage - Output (Min/Fixed)":"1V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.6","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.60000","currency":"USD"},{"qty":10,"price":"$5.92800","currency":"USD"},{"qty":25,"price":"$5.60400","currency":"USD"},{"qty":100,"price":"$4.85680","currency":"USD"},{"qty":250,"price":"$4.60772","currency":"USD"},{"qty":500,"price":"$4.13450","currency":"USD"},{"qty":1000,"price":"$3.48692","currency":"USD"},{"qty":3000,"price":"$3.31258","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4b560b3fd979d0f1ba80450c45a71876.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM73605QURNPRQ1 qualified for automotive use?","answer":"Yes, it is listed under the Automotive, AEC-Q100 series, meaning it meets the AEC-Q100 stress qualification for automotive-grade integrated circuits."},{"question":"Where can I buy LM73605QURNPRQ1?","answer":"This part is sourced through independent distribution and is available to order against an RFQ. Contact us for current pricing and availability — both are confirmed at quote time."},{"question":"Is LM73605QURNPRQ1 equivalent to LM73605QURNPR?","answer":"The LM73605QURNPRQ1 is the AEC-Q100 qualified variant of the base LM73605QURNPR. The 'Q1' suffix indicates automotive qualification; the non-Q1 version lacks that certification. Electrically they are the same design, but only the Q1 variant should be used in automotive BOMs requiring AEC-Q100 compliance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM73605QURNPRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM73605QURNPRQ1 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}}