{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS7A2042PDBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS7A2042PDBVR","canonicalUrl":"https://icboms.com/texas-instruments/TPS7A2042PDBVR","factsUrl":"https://icboms.com/api/mcp/products/TPS7A2042PDBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS7A2042PDBVR LDO voltage regulator, 300 mA output, 4.2 V fixed positive, 145 mV dropout, SOT-23-5 package, -40°C to 125°C.","salesMarkdown":"## 300 mA LDO with 4.2 V fixed output The TPS7A2042PDBVR is a single-output positive LDO from Texas Instruments, delivering 300 mA at a fixed 4.2 V. The maximum dropout is just 145 mV at full load, meaning the input rail needs to stay above 4.345 V to maintain regulation across the entire load range. Quiescent current is 15 µA typical, which keeps the regulator's own draw low enough for always-on or battery-backed rails where every microamp matters. ## PSRR profile and noise rejection Power-supply rejection ratio runs 65 dB at 100 Hz and rolls to 40 dB at 1 MHz. This means low-frequency ripple from a mains-derived rail gets attenuated by a factor of ~1800, while higher-frequency switching noise above a few hundred kHz sees less than 100× rejection. For a clean analog supply, you'll want a post-filter if the upstream switcher operates above 500 kHz. ## Package, temperature grade, and control Housed in a 5-pin SOT-23-5 (SC-74A), the part is surface-mount with a standard 0.95 mm pitch footprint. Operating junction temperature spans -40°C to 125°C, covering industrial and automotive under-hood environments. Enable and soft-start control pins are included; the soft-start limits inrush current during output ramp-up, which is useful when the load has large decoupling caps. Protection features cover over-current, over-temperature, and under-voltage lockout. ## Active production and sourcing It is available in Tape & Reel or Cut Tape options.","metaTitle":"TI TPS7A2042PDBVR LDO, 300mA, 4.2V Fixed, SOT-23-5","metaDescription":"Texas Instruments TPS7A2042PDBVR LDO, 300mA output, 4.2V fixed, 145mV dropout. Active production. SOT-23-5 package. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"65dB ~ 40dB (100Hz ~ 1MHz)","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, Soft Start","Current - Output":"300mA","Protection Features":"Over Current, Over Temperature, Under Voltage Lockout (UVLO)","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Input (Max)":"6V","Voltage Dropout (Max)":"0.145V @ 300mA","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"15 µA","Voltage - Output (Min/Fixed)":"4.2V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.46","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.46000","currency":"USD"},{"qty":10,"price":"$0.39800","currency":"USD"},{"qty":25,"price":"$0.37120","currency":"USD"},{"qty":100,"price":"$0.29690","currency":"USD"},{"qty":250,"price":"$0.27572","currency":"USD"},{"qty":500,"price":"$0.23332","currency":"USD"},{"qty":1000,"price":"$0.18028","currency":"USD"},{"qty":3000,"price":"$0.16438","currency":"USD"},{"qty":6000,"price":"$0.15377","currency":"USD"},{"qty":15000,"price":"$0.14317","currency":"USD"},{"qty":30000,"price":"$0.13574","currency":"USD"},{"qty":75000,"price":"$0.13256","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7af9499db957bf46087c76a8597de07b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of TPS7A2042PDBVR?","answer":"PSRR is 65 dB at 100 Hz, rolling to 40 dB at 1 MHz. This means the regulator rejects low-frequency ripple well but offers less attenuation above a few hundred kHz."},{"question":"What package does TPS7A2042PDBVR come in?","answer":"It is supplied in a 5-pin SOT-23-5 (SC-74A) surface-mount package, available in Tape & Reel or Cut Tape."},{"question":"How can I order TPS7A2042PDBVR?","answer":"This part is quoted to order against your BOM quantity through independent distribution. Submit an RFQ for current availability and pricing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS7A2042PDBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS7A2042PDBVR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}