{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS7A6533QKVURQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS7A6533QKVURQ1","canonicalUrl":"https://icboms.com/texas-instruments/TPS7A6533QKVURQ1","factsUrl":"https://icboms.com/api/mcp/products/TPS7A6533QKVURQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS7A6533QKVURQ1 Automotive AEC-Q100 LDO regulator, 3.3V fixed output, 300mA, 40V max input, TO-252-3 (DPak) package, surface mount.","salesMarkdown":"The TPS7A6533QKVURQ1: ROHS3 compliant per the manufacturer's declaration, so no regulatory re-qualification needed for EU or global markets that enforce the RoHS directive. ## 40V input, 300mA output — the rail it cleans Rated for a 40 V maximum input and a fixed 3.3 V output at 300 mA continuous. This LDO sits on a high-voltage automotive rail — a 12 V battery bus that sees load-dump transients up to 40 V — and delivers a clean 3.3 V to a microcontroller, sensor, or CAN transceiver without needing a pre-regulator. The 300 mA ceiling covers the typical current draw of an automotive ECU's always-on domain (wake-up logic, RTC, CAN standby) with margin. ## PSRR profile — where it filters and where it doesn't Power-supply rejection ratio is 60 dB at 100 Hz, dropping to 30 dB at 150 kHz. At 100 Hz (the fundamental of an alternator ripple or a mains-rectified supply), 60 dB means the output ripple is 1/1000th of the input ripple — that is clean enough for an analog sensor supply. At 150 kHz (a switching-regulator fundamental), the 30 dB rejection means only 1/30th of the input noise is attenuated; upstream filtering or a post-LDO ferrite bead may be needed to keep the noise off a sensitive analog rail. ## AEC-Q100 Grade 0 — the under-hood temperature band That is the Grade 0 band — the engine-bay, exhaust-adjacent, or brake-system zone where ambient air can hit 125°C and the die sees 150°C under load. A part rated to 150°C junction temperature survives the thermal cycling of a hot soak followed by a cold start without parametric drift. The Automotive, AEC-Q100 series designation means this device passed the full automotive qualification flow: high-temperature operating life (HTOL), temperature cycling, ESD robustness, and latch-up immunity per the AEC-Q100 test methods. ## TO-252-3 package — rework and thermal notes Without that thermal land, the 300 mA output at high input-to-output differential will push the die past the 150°C limit. Three leads with a visible chamfer on pin 1 — orientation is clear under a microscope. The exposed tab is large enough that a hot-air station can reflow it without cooking the adjacent passives, as long as the board is preheated to 100°C to reduce the thermal gradient across the package. ## Protection set — integrated fault management Includes over-current, over-temperature, short-circuit, under-voltage lockout (UVLO), and a watchdog monitor. The watchdog is unusual for a linear regulator — it monitors a digital input and resets the output if the pulse train stops, which means this part can serve as a supervised power rail for a safety-critical microcontroller without a separate supervisor IC. The UVLO holds the output off until the input rail rises above the threshold, preventing the downstream logic from powering up into an undefined state during a cold crank. The over-temperature shutdown protects the die if the thermal pad is poorly soldered or the ambient exceeds the design budget. ## Quiescent current and dropout 40 µA typical quiescent current (Iq) — low enough that the regulator's own draw does not dominate the battery budget in a key-off always-on domain. A car parked for 30 days with a 40 µA Iq plus the load current drains roughly 30 mAh from a 60 Ah battery, which is negligible. Maximum dropout voltage is 0.5 V at 250 mA output. On a 3.6 V rail (a Li-ion cell near end-of-discharge), the 0.5 V dropout leaves only 0.1 V of margin, and the output will drop out of regulation as the cell voltage sags further.","metaTitle":"TI TPS7A6533QKVURQ1 LDO, 40V 300mA, AEC-Q100, TO-252-3","metaDescription":"Texas Instruments TPS7A6533QKVURQ1 LDO regulator, 3.3V fixed output, 300mA, 40V max input, AEC-Q100, -40 to 150°C. Active production, quoted to order.","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 (100Hz ~ 150kHz)","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","lifecycle_stage":"eol_hot","Control Features":"Enable, Reset","Current - Output":"300mA","Protection Features":"Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO), Watchdog","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 150°C","Voltage - Input (Max)":"40V","Voltage Dropout (Max)":"0.5V @ 250mA","Supplier Device Package":"TO-252-3","Current - Quiescent (Iq)":"40 µA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.94","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.94000","currency":"USD"},{"qty":10,"price":"$2.63600","currency":"USD"},{"qty":25,"price":"$2.49240","currency":"USD"},{"qty":100,"price":"$2.16000","currency":"USD"},{"qty":250,"price":"$2.04924","currency":"USD"},{"qty":500,"price":"$1.83878","currency":"USD"},{"qty":1000,"price":"$1.56750","currency":"USD"},{"qty":2500,"price":"$1.56750","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/43ac065115cc254a1af394103f617c97.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of TPS7A6533QKVURQ1?","answer":"60 dB at 100 Hz, dropping to 30 dB at 150 kHz. The rejection is strongest at low frequencies (alternator ripple, mains hum) and weaker at switching-regulator frequencies above 100 kHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS7A6533QKVURQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS7A6533QKVURQ1 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}}