{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3808G33QDBVRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3808G33QDBVRQ1","canonicalUrl":"https://icboms.com/texas-instruments/TPS3808G33QDBVRQ1","factsUrl":"https://icboms.com/api/mcp/products/TPS3808G33QDBVRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3808G33QDBVRQ1, Simple Reset/Power-On Reset, AEC-Q100, Active Low, Open Drain, 3.07V threshold, SOT-23-6, -40°C to 125°C.","salesMarkdown":"## Automotive-grade supervisor for 3.3V rails It monitors a single 3.3V supply rail with a 3.07V threshold and asserts an active-low, open-drain reset output when the rail drops below that level. The reset timeout is adjustable via an external capacitor, giving the designer control over the brown-out recovery delay. ## 3.07V threshold — what it means for 3.3V system supervision The 3.07V threshold is set to trip at roughly 93% of a nominal 3.3V rail. This provides enough margin to catch a brown-out before the downstream logic (typically specified down to 3.0V or 2.97V) enters an undefined state. For a 3.3V MCU or FPGA bank, this threshold ensures the reset asserts while the rail is still within the device's valid operating window, preventing metastable behaviour on power-down or transient dips. ## Adjustable reset timeout — setting the recovery delay The reset timeout is adjustable/selectable via a single external capacitor connected to the CT pin. This allows the designer to tailor the delay between the rail returning above the threshold and the reset de-asserting. The datasheet provides a formula relating capacitance to timeout period. This covers the full automotive temperature envelope, including under-hood and engine-bay locations where ambient temperatures can exceed 105°C. The AEC-Q100 qualification adds the reliability screening (high-temperature operating life, temperature cycling, moisture sensitivity) required for production automotive ECUs.","metaTitle":"TPS3808G33QDBVRQ1 Simple Reset IC, AEC-Q100, 3.07V Threshold","metaDescription":"Texas Instruments TPS3808G33QDBVRQ1 automotive-grade simple reset/power-on reset IC. Active-low, open-drain output, 3.07V threshold, SOT-23-6, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Type":"Simple Reset/Power-On Reset","Reset":"Active Low","Output":"Open Drain or Open Collector","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Reset Timeout":"Adjustable/Selectable","Package / Case":"SOT-23-6","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"TPS3808","Voltage - Threshold":"3.07V","Operating Temperature":"-40°C~125°C(TJ)","Supplier Device Package":"SOT-23-6","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/af47015ed1397389fa8a7e17d86bf4af.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3808G33QDBVRQ1/alternatives.json"},"ai":{"faq":[{"question":"Is TPS3808G33QDBVRQ1 automotive grade?","answer":"Yes, the TPS3808G33QDBVRQ1 is qualified to AEC-Q100, the automotive reliability standard. The Q1 suffix in the order code designates the automotive-grade variant."},{"question":"How do I set the reset timeout on TPS3808G33QDBVRQ1?","answer":"The reset timeout is adjustable via an external capacitor connected to the CT pin. The datasheet provides a formula to calculate the timeout period from the capacitance value. This allows the designer to set a recovery delay that matches the system's power-up stabilisation requirements."},{"question":"What is the difference between TPS3808G33QDBVRQ1 and TPS3808G33DBVR?","answer":"The primary difference is the automotive qualification. The TPS3808G33DBVR is the commercial/industrial variant without the automotive screening. Functionally, both are simple reset ICs with a 3.07V threshold and adjustable timeout, but the Q1 variant is the one to specify for automotive production."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3808G33QDBVRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3808G33QDBVRQ1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}