{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3840DL29DBVRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3840DL29DBVRQ1","canonicalUrl":"https://icboms.com/texas-instruments/TPS3840DL29DBVRQ1","factsUrl":"https://icboms.com/api/mcp/products/TPS3840DL29DBVRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3840 series Simple Reset/Power-On Reset, Automotive grade, Active Low, Open Drain output, 2.9V threshold, 619ms typical reset timeout, SOT-23-5 package, -40°C to 125°C.","salesMarkdown":"## 2.9 V threshold supervisor for automotive power rails The TPS3840DL29DBVRQ1 is a Texas Instruments simple reset/power-on reset IC from the TPS3840 family, designed to monitor a single voltage rail at a 2.9 V threshold with an active-low, open-drain output. ## 619 ms timeout — power-up sequencing margin The typical 619 ms reset timeout period holds the microprocessor in reset long enough for the supply rail to stabilise and the oscillator to start, preventing premature code execution during power-up or brown-out recovery. With an open-drain output, the reset signal can be pulled up to a different voltage rail than the monitored supply, which simplifies level-shifting in multi-voltage automotive designs. ## SOT-23-5 package and supply monitoring Housed in a SOT-23-5 package (SC-74A), the device monitors a single voltage rail — the 2.9 V threshold targets 3.3 V or 3.0 V nominal rails with enough margin to catch a brown-out before the downstream logic fails.","metaTitle":"TPS3840DL29DBVRQ1 Simple Reset/Power-On Reset, AEC-Q100","metaDescription":"Texas Instruments TPS3840DL29DBVRQ1 automotive simple reset IC with 2.9V threshold, 619ms timeout, open-drain output. AEC-Q100 qualified, -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","Grade":"Automotive","Reset":"Active Low","Output":"Open Drain or Open Collector","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Mounting Type":"Surface Mount","Qualification":"AEC-Q100","Reset Timeout":"619ms Typical","Package / Case":"SC-74A, SOT-753","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"TPS3840","Voltage - Threshold":"2.9V","Operating Temperature":"-40°C ~ 125°C (TJ)","Supplier Device Package":"SOT-23-5","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/38b6907610defeba97afc045ec167792.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3840DL29DBVRQ1/alternatives.json"},"ai":{"faq":[{"question":"Is TPS3840DL29DBVRQ1 automotive qualified?","answer":"Yes, it carries AEC-Q100 qualification, making it suitable for automotive-grade applications including under-hood and cabin electronics."},{"question":"What is the reset timeout of TPS3840DL29DBVRQ1?","answer":"The reset timeout is 619 ms typical, which provides adequate hold time for most MCU power-on sequences and brown-out recovery."},{"question":"Does TPS3840DL29DBVRQ1 have a manual reset input?","answer":"No."},{"question":"What package is TPS3840DL29DBVRQ1 available in?","answer":"It comes in an SC-74A / SOT-753 package, with the supplier device package listed as SOT-23-5 — a 5-pin surface-mount footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3840DL29DBVRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3840DL29DBVRQ1 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}}