{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMR14030SSQDDAQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMR14030SSQDDAQ1","canonicalUrl":"https://icboms.com/texas-instruments/LMR14030SSQDDAQ1","factsUrl":"https://icboms.com/api/mcp/products/LMR14030SSQDDAQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMR14030SSQDDAQ1, Automotive AEC-Q100 SIMPLE SWITCHER, step-down buck regulator, 4-40V input, 3.5A output, adjustable 0.8-28V, 8-PowerSOIC package.","salesMarkdown":"## Buck regulator, 3.5 A continuous, 40 V input ceiling The LMR14030SSQDDAQ1: The output is adjustable from 0.8 V up to 28 V, set by a resistor divider on the FB pin. ## Switching frequency and external diode — no synchronous rectifier Switching frequency is programmable via the RT pin from 200 kHz to 2.5 MHz. A lower frequency reduces switching losses but requires a larger inductor; 2.5 MHz keeps the magnetics small for space-constrained automotive PCBs. The part uses an external Schottky catch diode — it does not integrate a synchronous rectifier. This means the BOM adds a diode, but the trade-off is lower cost and no shoot-through risk at high input voltage. The diode's forward voltage and thermal rating must be sized for the 3.5 A peak inductor current. ## 8-PowerSOIC with exposed pad — thermal and layout notes The input capacitor should be placed within 5 mm of the VIN pin to keep the high-frequency loop small. The SW pin node sees fast voltage transitions; keep the catch diode and inductor connection short to reduce radiated emissions.","metaTitle":"TI LMR14030SSQDDAQ1 Buck Regulator, 3.5A, 40V Input","metaDescription":"Texas Instruments LMR14030SSQDDAQ1 SIMPLE SWITCHER buck regulator, 4-40V input, 3.5A output, adjustable 0.8-28V. AEC-Q100 automotive grade. Active, RoHS3.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100, SIMPLE SWITCHER®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"Automotive, AEC-Q100, SIMPLE SWITCHER®","Package":"Tube","Function":"Step-Down","Topology":"Buck","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"8-PowerSOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Output":"3.5A","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"200kHz ~ 2.5MHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"No","Voltage - Input (Max)":"40V","Voltage - Input (Min)":"4V","Voltage - Output (Max)":"28V","Supplier Device Package":"8-SO PowerPad","Voltage - Output (Min/Fixed)":"0.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.94","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.94000","currency":"USD"},{"qty":10,"price":"$3.53700","currency":"USD"},{"qty":25,"price":"$3.34360","currency":"USD"},{"qty":100,"price":"$2.89790","currency":"USD"},{"qty":250,"price":"$2.74932","currency":"USD"},{"qty":500,"price":"$2.46696","currency":"USD"},{"qty":1000,"price":"$2.10300","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5622584fdf045216f3d0804b19c6b4e2.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source to LMR14030SSQDDAQ1?","answer":"The TPS65261RHBT is a triple-output buck converter (3 A per channel) with synchronous rectifiers, but it is not a pin-to-pin replacement — it comes in a different package (QFN) and has a lower maximum input voltage (4.5 V min, 18 V max). The LMR14030SSQDDAQ1 is a single-output, non-synchronous design with a 40 V input ceiling; a direct swap without board rework is not possible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMR14030SSQDDAQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMR14030SSQDDAQ1 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}}