{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS7B8433QDCYRQ1M3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS7B8433QDCYRQ1M3","canonicalUrl":"https://icboms.com/texas-instruments/TPS7B8433QDCYRQ1M3","factsUrl":"https://icboms.com/api/mcp/products/TPS7B8433QDCYRQ1M3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS7B8433QDCYRQ1M3, Automotive AEC-Q100 LDO, Fixed 3.3V output, 150mA, 40V input max, 0.23V dropout, 26µA quiescent current, 55dB PSRR at 1kHz, SOT-223-4 package.","salesMarkdown":"## What this regulator brings to the automotive rail The TPS7B8433QDCYRQ1M3: 40 V input maximum covers load-dump and cold-crank transients. 0.23 V dropout at full load holds the 3.3 V rail through a sagging battery line. Quiescent current sits at 26 µA, low enough for always-on body controller modules and RTC keep-alive circuits where every microamp on the battery matters. The 55 dB PSRR at 1 kHz tells you it can clean up ripple from a switching pre-regulator or alternator whine, though for noise-sensitive analog front-ends you may want to check the full frequency curve against your load. Built-in protection includes over-current, over-temperature, and under-voltage lockout (UVLO), so a shorted load or a thermal event shuts it down gracefully rather than letting the smoke out. The enable pin lets a system supervisor gate the rail during sleep modes. ## Dropout and headroom — the real-world margin The 0.23 V dropout at 150 mA is the maximum over temperature, so in practice at 25 °C it will be lower. On a 12 V nominal automotive rail that dips to 5.5 V during cranking, you still have over 2 V of headroom — plenty. But if you are running this from a 3.6 V battery rail, that 0.23 V dropout eats into the regulation margin, and you need the input to stay above 3.53 V to keep the output at 3.3 V. ## Package and board integration SOT-223-4 package (TO-261-4 equivalent) with a large tab for heat sinking. Surface-mount only; the tab is the output (VOUT) pin. ## Sourcing and lifecycle posture For a production BOM line, this part is a low-risk choice for new designs today.","metaTitle":"TI TPS7B8433QDCYRQ1M3 Automotive LDO, 3.3V Fixed Output","metaDescription":"Texas Instruments TPS7B8433QDCYRQ1M3 automotive AEC-Q100 LDO regulator. Fixed 3.3V output, 150mA, 40V input max, 0.23V dropout, 26µA Iq, 55dB PSRR. SOT-223-4.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"PSRR":"55dB (1kHz)","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-261-4, TO-261AA","lifecycle_stage":"eol_hot","Control Features":"Current Limit, Enable","Current - Output":"150mA","Protection Features":"Over Current, Over Temperature, Under Voltage Lockout (UVLO)","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TA)","Voltage - Input (Max)":"40V","Voltage Dropout (Max)":"0.23V @ 150mA","Supplier Device Package":"SOT-223-4","Current - Quiescent (Iq)":"26 µA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.72","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.72000","currency":"USD"},{"qty":10,"price":"$1.54700","currency":"USD"},{"qty":25,"price":"$1.45960","currency":"USD"},{"qty":100,"price":"$1.24350","currency":"USD"},{"qty":250,"price":"$1.16756","currency":"USD"},{"qty":500,"price":"$1.02162","currency":"USD"},{"qty":1000,"price":"$0.84648","currency":"USD"},{"qty":2500,"price":"$0.78810","currency":"USD"},{"qty":5000,"price":"$0.75891","currency":"USD"},{"qty":12500,"price":"$0.72972","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/0dd4bb32cf0e8c493aea1479df904ff0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the TPS7B8433QDCYRQ1M3 RoHS compliant?","answer":"Yes, it is ROHS3 compliant."},{"question":"What is the replacement or equivalent for the TPS7B8433QDCYRQ1M3?","answer":"The TPS70612DBVT is a different part (1.2 V output, 6.5 V input max) and is not a functional substitute for this 3.3 V, 40 V input regulator. For a true drop-in alternative, verify the pinout and specs against your design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS7B8433QDCYRQ1M3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS7B8433QDCYRQ1M3 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}}