{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BU12SD2MG-MTR","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"BU12SD2MG-MTR","canonicalUrl":"https://icboms.com/rohm/BU12SD2MG-MTR","factsUrl":"https://icboms.com/api/mcp/products/BU12SD2MG-MTR","rawCanonicalId":null},"summary":{"shortDescription":"ROHM Semiconductor BU12SD2MG-MTR, Automotive AEC-Q100 LDO regulator, fixed 1.2V output, 200mA, SC-74A SOT-753, surface mount.","salesMarkdown":"## 1.2V fixed rail for automotive ECUs — the LDO that cleans up the supply The ROHM BU12SD2MG-MTR is a single-output positive fixed LDO regulator delivering 200 mA at 1.2 V from a maximum 6 V input rail. The 68 dB PSRR at 1 kHz means this LDO attenuates switching ripple from a pre-regulator or alternator noise by a factor of roughly 2500 — a 100 mVpp ripple on the input becomes roughly 40 µVpp on the output, which keeps the analog supply clean for sensor interfaces or microcontroller ADC references. ## Dropout and quiescent — the headroom and idle draw Maximum dropout is 0.55 V at 100 mA load. ## Package and board-fit for the 5-SSOP Supplied in SC-74A / SOT-753 (5-SSOP), a 5-lead surface-mount package roughly 2.9 mm × 1.6 mm. The enable pin allows the system processor to shut down the LDO output during standby, cutting the load current to the quiescent level. Protection features include over-current and over-temperature shutdown — the LDO folds back or latches off before the junction exceeds the safe operating area, which is important in an automotive environment where the ambient can spike above the 105 °C rated limit during a fault condition.","metaTitle":"BU12SD2MG-MTR LDO Regulator, 1.2V 200mA, AEC-Q100","metaDescription":"ROHM BU12SD2MG-MTR fixed 1.2V LDO, 200mA output, 68dB PSRR at 1kHz. AEC-Q100 qualified, SC-74A package. Active, quoted to order.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"68dB (1kHz)","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"200mA","Protection Features":"Over Current, Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 105°C","Voltage - Input (Max)":"6V","Voltage Dropout (Max)":"0.55V @ 100mA","Supplier Device Package":"5-SSOP","Current - Quiescent (Iq)":"80 µA","Voltage - Output (Min/Fixed)":"1.2V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.61","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.61000","currency":"USD"},{"qty":10,"price":"$0.53900","currency":"USD"},{"qty":25,"price":"$0.50600","currency":"USD"},{"qty":100,"price":"$0.41300","currency":"USD"},{"qty":250,"price":"$0.38360","currency":"USD"},{"qty":500,"price":"$0.32648","currency":"USD"},{"qty":1000,"price":"$0.26118","currency":"USD"},{"qty":3000,"price":"$0.23670","currency":"USD"},{"qty":6000,"price":"$0.23100","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9b57e0caf6788ee562edba97d3696ccd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of the BU12SD2MG-MTR and why does it matter?","answer":"The listed PSRR is 68 dB at 1 kHz. This means the LDO attenuates input ripple at that frequency by roughly 2500× — a 100 mVpp switching ripple on the input becomes about 40 µVpp on the output. For powering analog front-ends or ADC reference inputs in an automotive ECU, this keeps the supply noise below the LSB threshold of a 12-bit converter on a 3.3 V reference."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/BU12SD2MG-MTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/BU12SD2MG-MTR 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}}