{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS78433QWDRBRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS78433QWDRBRQ1","canonicalUrl":"https://icboms.com/texas-instruments/TPS78433QWDRBRQ1","factsUrl":"https://icboms.com/api/mcp/products/TPS78433QWDRBRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS78433QWDRBRQ1 automotive LDO, 300 mA, 3.3 V fixed output, 8-VDFN exposed pad, AEC-Q100, active.","salesMarkdown":"## 300 mA, 3.3 V fixed LDO for under-hood automotive The TPS78433QWDRBRQ1: Maximum dropout is 115 mV at the full 300 mA load, so the input rail needs to stay above 3.415 V across line and load to keep the output in regulation — a 3.3 V core rail fed from a 5 V bus has 1.585 V of headroom, well clear of the dropout floor. Quiescent current is 40 µA typical, which sets the always-on budget for an automotive ECU that never fully sleeps — a body controller drawing 40 µA from the battery for the regulator's own consumption adds about 0.96 mAh per day, negligible against a 60 Ah battery. ## PSRR profile and noise rejection Power-supply rejection ratio is specified as 60 dB at 1 kHz, rolling off to 30 dB at 1 MHz — the regulator attenuates 1 mV of 1 kHz ripple on the input to 1 µV at the output, but at 1 MHz the same ripple passes through at 31.6 µV. Upstream switching noise above a few hundred kHz needs a ferrite bead or a second LC stage ahead of the LDO to keep the output clean for sensitive analog loads. ## Active production, AEC-Q100 compliance The ROHS3 compliance certificate is available from Texas Instruments.","metaTitle":"TPS78433QWDRBRQ1 LDO, 300 mA, AEC-Q100, 3.3 V fixed","metaDescription":"Texas Instruments TPS78433QWDRBRQ1 automotive LDO, 300 mA output, 115 mV dropout, 40 µA Iq, 150°C junction. Active production. RFQ for pricing.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"60dB ~ 30dB (1kHz ~ 1MHz)","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount, Wettable Flank","Package / Case":"8-VDFN Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"300mA","Protection Features":"Over Current, Over Temperature","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":"8-SON (3x3)","Current - Quiescent (Iq)":"40 µA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.99","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.99000","currency":"USD"},{"qty":10,"price":"$0.86800","currency":"USD"},{"qty":25,"price":"$0.81480","currency":"USD"},{"qty":100,"price":"$0.66510","currency":"USD"},{"qty":250,"price":"$0.61776","currency":"USD"},{"qty":500,"price":"$0.52576","currency":"USD"},{"qty":1000,"price":"$0.42061","currency":"USD"},{"qty":3000,"price":"$0.38118","currency":"USD"},{"qty":6000,"price":"$0.37200","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/aabd4d956d17e0bf55f6fd47bbf8c6de.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of the TPS78433QWDRBRQ1?","answer":"The PSRR is 60 dB at 1 kHz, decreasing to 30 dB at 1 MHz. This means the regulator attenuates low-frequency ripple well but passes high-frequency noise above a few hundred kHz unless additional filtering is added upstream."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS78433QWDRBRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS78433QWDRBRQ1 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}}