{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BD9SD11NUX-CE2","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"BD9SD11NUX-CE2","canonicalUrl":"https://icboms.com/rohm/BD9SD11NUX-CE2","factsUrl":"https://icboms.com/api/mcp/products/BD9SD11NUX-CE2","rawCanonicalId":null},"summary":{"shortDescription":"ROHM Semiconductor BD9SD11NUX-CE2 automotive step-down buck regulator, AEC-Q100, 600 mA output, 2.2 MHz switching, fixed 1.15 V output, synchronous rectifier, VSON008X2020 package.","salesMarkdown":"## 600 mA automotive buck — fixed 1.15 V rail, synchronous rectifier The BD9SD11NUX-CE2 from ROHM is a single-output step-down buck regulator rated for 600 mA continuous output at a fixed 1.15 V. Synchronous rectification is built in — the internal low-side FET replaces the external catch diode, saving one BOM line and one placement. The efficiency gain matters most at light loads where a diode's forward drop would dominate conduction loss. This covers under-hood and cabin-mounted ECUs where the local ambient can reach 105°C and the regulator's own dissipation adds another 10-15°C junction rise. ROHS3 compliance is confirmed — no restricted substances in the package or plating. ## VSON008X2020 — thermal pad and board-level integration The 8-UFDFN exposed-pad package (VSON008X2020) requires a thermal land on the PCB to draw heat from the die into the board copper. The exposed pad is the main thermal path — the package's RthJA depends on the number and size of the thermal vias under the pad. Tape & Reel packaging is the standard delivery format; Cut Tape is also available for prototype or low-volume builds. The reel quantity is the usual 3000 pieces for this package size.","metaTitle":"ROHM BD9SD11NUX-CE2 Buck Regulator, 600 mA, 2.2 MHz","metaDescription":"ROHM BD9SD11NUX-CE2 automotive step-down buck regulator, 600 mA output, 2.2 MHz switching, AEC-Q100, -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":["Discrete Semiconductors"],"specifications":{"Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-UFDFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Output":"600mA","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"2.2MHz","Operating Temperature":"-40°C ~ 125°C (TA)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"5.5V","Voltage - Input (Min)":"2.7V","Supplier Device Package":"VSON008X2020","Voltage - Output (Min/Fixed)":"1.15V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6","priceTiers":[{"qty":1,"price":"$1.60000","currency":"USD"},{"qty":10,"price":"$1.44100","currency":"USD"},{"qty":25,"price":"$1.35960","currency":"USD"},{"qty":100,"price":"$1.15830","currency":"USD"},{"qty":250,"price":"$1.08756","currency":"USD"},{"qty":500,"price":"$0.95162","currency":"USD"},{"qty":1000,"price":"$0.78848","currency":"USD"},{"qty":4000,"price":"$0.76950","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9834a213288bf276b95aa34dac436f37.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BD9SD11NUX-CE2/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does ROHM provide for BD9SD11NUX-CE2?","answer":"ROHS3 compliance is confirmed. The part is also AEC-Q100 qualified, which includes the full automotive reliability screening (temperature cycling, ESD, latch-up, and parametric test at -40°C, +25°C, and +125°C)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/BD9SD11NUX-CE2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/BD9SD11NUX-CE2 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}}