{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3840PH27DBVRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3840PH27DBVRQ1","canonicalUrl":"https://icboms.com/texas-instruments/TPS3840PH27DBVRQ1","factsUrl":"https://icboms.com/api/mcp/products/TPS3840PH27DBVRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3840PH27DBVRQ1, Automotive AEC-Q100, Simple Reset/Power-On Reset IC, 1-channel supervisor, 2.7V threshold, active high push-pull output, 619ms timeout, SOT-23-5 package.","salesMarkdown":"## 2.7V threshold supervisor for automotive power rails The TPS3840PH27DBVRQ1 is a Texas Instruments simple reset/power-on reset IC from the automotive AEC-Q100 series, monitoring a single voltage rail with a 2.7V threshold. It asserts a reset output — active high, push-pull — whenever the monitored supply drops below that threshold, and holds the reset for a typical 619ms timeout after the rail recovers. ## 619ms timeout — brownout ride-through without nuisance resets The 619ms typical reset timeout gives the supply rail time to recover from a short brownout or load transient before the system restarts. For a 12V automotive bus that sees cranking dips, that window is wide enough to avoid a reset on a 200ms sag, but short enough that the system doesn't hang dead through a sustained undervoltage. ## SOT-23-5 package — footprint and mounting Housed in the SC-74A / SOT-753 (SOT-23-5) surface-mount package, the part occupies roughly 3 mm × 3 mm of board area. No exposed pad — thermal management is through the package body and copper traces.","metaTitle":"TPS3840PH27DBVRQ1 – TI Automotive Simple Reset/Power-On","metaDescription":"Texas Instruments TPS3840PH27DBVRQ1: AEC-Q100 qualified supervisor IC with 2.7V threshold, active high push-pull output, 619ms timeout.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Type":"Simple Reset/Power-On Reset","Reset":"Active High","Output":"Push-Pull, Totem Pole","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Reset Timeout":"619ms Typical","Package / Case":"SC-74A, SOT-753","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"TPS3840","Voltage - Threshold":"2.7V","Operating Temperature":"-40°C~125°C(TJ)","Supplier Device Package":"SOT-23-5","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1900","priceTiers":[{"qty":1,"price":"$1.19000","currency":"USD"},{"qty":10,"price":"$1.06600","currency":"USD"},{"qty":25,"price":"$1.01200","currency":"USD"},{"qty":100,"price":"$0.83140","currency":"USD"},{"qty":250,"price":"$0.77712","currency":"USD"},{"qty":500,"price":"$0.68678","currency":"USD"},{"qty":1000,"price":"$0.54219","currency":"USD"},{"qty":3000,"price":"$0.46050","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/38b6907610defeba97afc045ec167792.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3840PH27DBVRQ1/alternatives.json"},"ai":{"faq":[{"question":"Is TPS3840PH27DBVRQ1 active high reset?","answer":"Yes, the reset output is active high. The output goes high when the supply is below threshold, and returns low after the timeout expires. Confirm your processor's reset input expects a logic-high during reset."},{"question":"Is TPS3840PH27DBVRQ1 AEC-Q100 qualified?","answer":"Yes, it is part of the Automotive, AEC-Q100 series."},{"question":"Can TPS3840PH27DBVRQ1 replace TPS3840PH27DBVR?","answer":"The base product number is TPS3840. The 'Q1' suffix indicates AEC-Q100 qualification. Electrically the parts are identical — same 2.7V threshold, same active high output, same 619ms timeout. The Q1 version adds automotive-grade testing. If your BOM calls for TPS3840PH27DBVR (non-automotive), the Q1 variant is a drop-in replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3840PH27DBVRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3840PH27DBVRQ1 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}}