{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS3840PL29DBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS3840PL29DBVR","canonicalUrl":"https://icboms.com/texas-instruments/TPS3840PL29DBVR","factsUrl":"https://icboms.com/api/mcp/products/TPS3840PL29DBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS3840PL29DBVR, Simple Reset/Power-On Reset, single-channel supervisor, 2.9V threshold, active-low push-pull output, 619ms typical reset timeout, SOT-23-5 package, -40°C to 125°C junction temperature range.","salesMarkdown":"## 2.9V threshold supervisor for 3.3V and 3.0V rails The TPS3840PL29DBVR monitors a single supply rail and asserts a reset when the voltage drops below 2.9V. That threshold suits 3.3V and 3.0V rails where a 10–15% drop below nominal signals a brown-out condition — the reset holds the processor until the rail recovers and the 619ms timeout elapses, giving the supply time to stabilise before the CPU starts executing again. ## Active production in SOT-23-5 ## Wide junction temperature range for industrial and automotive The junction rating means the die itself is qualified to 125°C, not just the case — relevant when the part sits near a hot regulator or power stage.","metaTitle":"TPS3840PL29DBVR – TI Simple Reset/Power-On Reset","metaDescription":"TPS3840PL29DBVR from Texas Instruments: Simple Reset/Power-On Reset, active-low push-pull output, 2.9V threshold, 619ms timeout, -40°C to 125°C junction range","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":"Simple Reset/Power-On Reset","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":"2.9V","Operating Temperature":"-40°C~125°C(TJ)","Supplier Device Package":"SOT-23-5","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2100","priceTiers":[{"qty":1,"price":"$1.21000","currency":"USD"},{"qty":10,"price":"$1.08500","currency":"USD"},{"qty":25,"price":"$1.03000","currency":"USD"},{"qty":100,"price":"$0.84600","currency":"USD"},{"qty":250,"price":"$0.79080","currency":"USD"},{"qty":500,"price":"$0.69886","currency":"USD"},{"qty":1000,"price":"$0.55173","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/TPS3840PL29DBVR/alternatives.json"},"ai":{"faq":[{"question":"What is the reset timeout for TPS3840PL29DBVR?","answer":"The typical reset timeout is 619ms. After the monitored voltage rises above the threshold, the reset output remains asserted for this duration before releasing, allowing the supply and oscillator to stabilise."},{"question":"What is the closest functional equivalent to TPS3840PL29DBVR?","answer":"The TLV803EA29VDBZR is a peer part with the same 2.9V threshold and active-low reset, but its output is open-drain (requires a pull-up resistor) and its reset timeout is a minimum of 130ms versus the 619ms typical of the TPS3840PL29DBVR. The TLV803ED29DBZR has a 33ms minimum timeout. Neither is a drop-in replacement — the output driver and timeout differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS3840PL29DBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS3840PL29DBVR 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}}