{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3840PL25DBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3840PL25DBVR","canonicalUrl":"https://icboms.com/texas-instruments/TPS3840PL25DBVR","factsUrl":"https://icboms.com/api/mcp/products/TPS3840PL25DBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3840PL25DBVR, Power Supply Monitor, single-channel, 2.5V threshold, push-pull active-low reset, 619 ms typical reset timeout, SOT-23-5 package, -40°C to 125°C junction temperature.","salesMarkdown":"## Supervising a single 2.5V rail with a fixed threshold The TPS3840PL25DBVR is a Texas Instruments single-channel power supply monitor that asserts a reset output when the monitored voltage drops below 2.5V. Its push-pull, totem-pole output drives the reset line high or low without an external pull-up resistor, simplifying the BOM on a processor or FPGA power-good chain. The 619 ms typical reset timeout holds the system in reset long enough for the supply to stabilise after a brown-out or power-up, matching the startup sequencing needs of many Cortex-M and low-power MCUs. ## Sizing the timeout and temperature envelope The 2.5V threshold is fixed, so the BOM must match the exact rail being monitored — no resistor-divider adjustment. Compared to the TLV803EA29VDBZR (active-low, open-drain output, 130 ms min timeout), this part offers a push-pull output and a longer, fixed 619 ms timeout. The open-drain sibling requires an external pull-up; the TPS3840PL25DBVR does not, saving one resistor per channel. ## Active production with ROHS3 compliance The SOT-23-5 package (SC-74A) is a common footprint with broad second-source potential. The base product number TPS3840 covers multiple threshold voltages; confirm the 2.5V variant when ordering.","metaTitle":"TPS3840PL25DBVR Power Supply Monitor – TI, 2.5V Threshold","metaDescription":"Texas Instruments TPS3840PL25DBVR single-channel voltage supervisor, 2.5V threshold, push-pull active-low reset, 619 ms timeout, SOT-23-5, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Type":"Power Supply Monitor","Reset":"Active Low","Output":"Push-Pull, Totem Pole","Series":"-","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":"2.5V","Operating Temperature":"-40°C~125°C(TJ)","Supplier Device Package":"SOT-23-5","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2000","priceTiers":[{"qty":1,"price":"$1.20000","currency":"USD"},{"qty":10,"price":"$1.07200","currency":"USD"},{"qty":25,"price":"$1.01760","currency":"USD"},{"qty":100,"price":"$0.83570","currency":"USD"},{"qty":250,"price":"$0.78124","currency":"USD"},{"qty":500,"price":"$0.69040","currency":"USD"},{"qty":1000,"price":"$0.54505","currency":"USD"},{"qty":3000,"price":"$0.39000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5c43cdc78d6ce4876119969a2f71b26e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS3840PL25DBVR/alternatives.json"},"ai":{"faq":[{"question":"What is the reset timeout of TPS3840PL25DBVR?","answer":"The typical reset timeout is 619 ms, long enough to cover most power supply ramp-up and brown-out events for single-rail processors."},{"question":"What is the output type of TPS3840PL25DBVR?","answer":"Push-pull, totem-pole output, active-low reset — no external pull-up resistor is required."},{"question":"When sourcing TPS3840PL25DBVR, what is the closest functional second-source?","answer":"The TLV803EA29VDBZR is a functional cross-shop candidate: it also provides an active-low reset but uses an open-drain output (requires a pull-up) and has a shorter 130 ms minimum timeout. The TPS3840PL25DBVR's push-pull output and longer 619 ms timeout are key differentiators."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3840PL25DBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3840PL25DBVR 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}}