{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS78450QDBVRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS78450QDBVRQ1","canonicalUrl":"https://icboms.com/texas-instruments/TPS78450QDBVRQ1","factsUrl":"https://icboms.com/api/mcp/products/TPS78450QDBVRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS78450QDBVRQ1, Automotive AEC-Q100 LDO regulator, fixed 5V output, 300mA, PSRR 60dB ~ 30dB (1kHz ~ 1MHz), SC-74A / SOT-753 package, -40°C to 150°C junction temperature.","salesMarkdown":"## Fixed 5V LDO for automotive power rails The Texas Instruments TPS78450QDBVRQ1 is a single-output, positive, fixed 5V LDO voltage regulator rated for 300mA continuous output. It is qualified to AEC-Q100, with a junction temperature range of -40°C to 150°C, making it a fit for under-hood and engine-bay electronics where ambient heat is high and supply rails must stay clean. The part integrates current limit, over-temperature protection, and under-voltage lockout (UVLO), plus a soft-start and enable pin for sequenced power-up. PSRR measures 60dB at 1kHz, rolling to 30dB at 1MHz — enough to reject alternator ripple and switching-converter noise on a 5V rail feeding an MCU or sensor interface. ## PSRR across frequency — what 60dB at 1kHz means for the load PSRR is 60dB at 1kHz and 30dB at 1MHz. ## SOT-23-5 package — board footprint and thermal Housed in a SOT-23-5 package. The 300mA output at 5V with a 6V input dissipates roughly 300mW.","metaTitle":"TPS78450QDBVRQ1 LDO Regulator, 5V Fixed, 300mA, AEC-Q100","metaDescription":"TI TPS78450QDBVRQ1 LDO, 5V fixed output, 300mA, PSRR 60dB at 1kHz, -40°C to 150°C junction, AEC-Q100 automotive grade. Available to order.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"60dB ~ 30dB (1kHz ~ 1MHz)","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":"Current Limit, 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 ~ 150°C (TJ)","Voltage - Input (Max)":"6V","Voltage Dropout (Max)":"0.115V @ 300mA","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"40 µA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.94","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.94000","currency":"USD"},{"qty":10,"price":"$0.82700","currency":"USD"},{"qty":25,"price":"$0.77640","currency":"USD"},{"qty":100,"price":"$0.63370","currency":"USD"},{"qty":250,"price":"$0.58864","currency":"USD"},{"qty":500,"price":"$0.50096","currency":"USD"},{"qty":1000,"price":"$0.40077","currency":"USD"},{"qty":3000,"price":"$0.36320","currency":"USD"},{"qty":6000,"price":"$0.33815","currency":"USD"},{"qty":15000,"price":"$0.32562","currency":"USD"},{"qty":30000,"price":"$0.31310","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ea33631cedf762e64cf2b317b40589c9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is TPS78450QDBVRQ1's listed PSRR?","answer":"PSRR is 60dB at 1kHz, rolling to 30dB at 1MHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS78450QDBVRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS78450QDBVRQ1 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}}