{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS65251-3RHAT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS65251-3RHAT","canonicalUrl":"https://icboms.com/texas-instruments/TPS65251-3RHAT","factsUrl":"https://icboms.com/api/mcp/products/TPS65251-3RHAT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS65251-3RHAT triple-output step-down buck regulator, 3A and 2A outputs, adjustable from 0.8V to 17V, 300kHz-2.2MHz switching, 40-VFQFN exposed pad, -40°C to 125°C.","salesMarkdown":"## Three-rail buck for mixed-voltage boards The TPS65251-3RHAT from Texas Instruments is a triple-output step-down (buck) regulator that takes a 4.5V to 18V input rail and delivers one 3A output and one 2A output, plus a third lower-current rail — all adjustable down to 0.8V. This is the kind of part you reach for when a single board needs 5V for logic, 3.3V for I/O, and 1.2V for a core, all from a common 12V or 5V supply bus. The synchronous rectifier keeps efficiency up, and the 300kHz to 2.2MHz switching range lets you pick between smaller inductors (higher frequency) and better efficiency (lower frequency). The 3A and 2A outputs are the two you will size the magnetics for. The adjustable output range from 0.8V up to 17V covers most digital rails plus some analog supplies. At the top end, remember the 18V input max: if your input bus is 12V nominal, you have plenty of headroom; if you are running off a 16V rail, you are tight on margin. ## Thermal and layout — the exposed pad is not optional This comes in a 40-VFQFN with an exposed pad, 6x6 mm body. Surface-mount only — no socket, so plan for reflow or hot-air rework.","metaTitle":"TI TPS65251-3RHAT triple buck regulator, 3A/2A, active","metaDescription":"Texas Instruments TPS65251-3RHAT triple step-down buck regulator: 3A and 2A outputs, 4.5V-18V input, 300kHz-2.2MHz switching.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"40-VFQFN Exposed Pad","Product Status":"Active","lifecycle_stage":"eol_hot","Current - Output":"3A, 2A","Number of Outputs":"3","Base Product Number":"TPS65251","Output Configuration":"Positive","Frequency - Switching":"300kHz ~ 2.2MHz","Operating Temperature":"-40°C~125°C(TJ)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"18V","Voltage - Input (Min)":"4.5V","Voltage - Output (Max)":"17V","Supplier Device Package":"40-VQFN (6x6)","Voltage - Output (Min/Fixed)":"0.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.6455","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e353daf2958e0545163094d83a42490c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS65251-3RHAT/alternatives.json"},"ai":{"faq":[{"question":"Can TPS65251-3RHAT deliver a 5V output at 3A?","answer":"Yes. The adjustable output range goes down to 0.8V and up to 17V, so 5V is well within range. The 3A-rated output can supply the full 3A at 5V as long as the input voltage and thermal design support the power dissipation."},{"question":"What is the switching frequency range of TPS65251-3RHAT?","answer":"It switches from 300kHz up to 2.2MHz, set by an external resistor. Lower frequency gives better efficiency; higher frequency shrinks the inductor footprint."},{"question":"What package does TPS65251-3RHAT come in?","answer":"A 40-lead VFQFN with an exposed thermal pad, 6x6 mm body (supplier device package 40-VQFN). Surface-mount only."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS65251-3RHAT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS65251-3RHAT 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}}