{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BU28SD2MG-MTR","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"BU28SD2MG-MTR","canonicalUrl":"https://icboms.com/rohm/BU28SD2MG-MTR","factsUrl":"https://icboms.com/api/mcp/products/BU28SD2MG-MTR","rawCanonicalId":null},"summary":{"shortDescription":"ROHM Automotive, AEC-Q100, BU28SD2MG-MTR, linear voltage regulator, fixed 2.8V output, 200mA, 0.15V dropout at 100mA, PSRR 68dB at 1kHz, -40 to 105°C, SOT-753 package.","salesMarkdown":"## 2.8V fixed LDO for automotive sensor rails The ROHM BU28SD2MG-MTR is a single-output, positive fixed linear regulator delivering 2.8V at up to 200 mA. Maximum dropout is 0.15 V at 100 mA output. That headroom lets the regulator hold 2.8V regulation when the input dips toward 2.95V — relevant during engine cranking when the battery bus sags below 6V. PSRR is 68 dB at 1 kHz. That attenuation cleans up alternator ripple and switching-regulator noise on the input bus, which matters for analog sensor supplies and CAN transceiver bias rails where conducted noise couples into the signal path. ## Protection and quiescent draw Built-in over-current and over-temperature protection let the part survive a shorted output or a stalled load without external clamp diodes. Quiescent current is 80 µA typical, low enough for always-on modules in a vehicle that must not drain the battery during key-off. The enable pin (Control Features) allows the system MCU to gate the regulator output for sequenced power-up or sleep-mode power-down, cutting Iq to near zero when the rail is not needed. ## Package and board-fit Housed in a 5-pin SOT-753 (SC-74A) package, surface-mount. The 5-SSOP supplier device package footprint is compact enough for space-constrained ECU and sensor-module layouts. The enable and output pins sit on a standard 0.95 mm pitch — no fine-pitch rework required.","metaTitle":"BU28SD2MG-MTR LDO Regulator, 2.8V 200mA, AEC-Q100, PSRR 68dB","metaDescription":"ROHM BU28SD2MG-MTR automotive LDO, fixed 2.8V output, 200mA, 0.15V dropout at 100mA, PSRR 68dB at 1kHz, -40 to 105°C, SOT-753.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"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)":"0.15V @ 100mA","Supplier Device Package":"5-SSOP","Current - Quiescent (Iq)":"80 µA","Voltage - Output (Min/Fixed)":"2.8V"}},"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":"Does BU28SD2MG-MTR have overcurrent protection?","answer":"Yes, it includes both over-current and over-temperature protection features."},{"question":"Is BU28SD2MG-MTR AEC-Q100 qualified?","answer":"Yes, it is part of the Automotive, AEC-Q100 series, qualified for automotive-grade applications."},{"question":"What is the closest functional second-source to BU28SD2MG-MTR?","answer":"The BA33BC0WFP- is a similar fixed-output positive LDO, but it outputs 3.3V at 1A with a lower PSRR of 55 dB at 120 Hz. It is not a direct pin-for-pin replacement — the output voltage and current ratings differ, so a board-level change is needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/BU28SD2MG-MTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/BU28SD2MG-MTR 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}}