{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS40425RHAT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS40425RHAT","canonicalUrl":"https://icboms.com/texas-instruments/TPS40425RHAT","factsUrl":"https://icboms.com/api/mcp/products/TPS40425RHAT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS40425RHAT step-down DC/DC controller, PMBus interface, 2-phase buck, 4.5-20V supply, 200kHz-1.5MHz, 40-VQFN exposed pad, active.","salesMarkdown":"## What the TPS40425RHAT brings to a power rail The TPS40425RHAT is a two-phase step-down (buck) DC/DC controller with a synchronous rectifier stage, meaning it drives external MOSFETs to regulate a positive output voltage while the PMBus serial interface handles telemetry and trimming. The 200 kHz to 1.5 MHz switching range lets you trade inductor size against switching loss — a 400 kHz design uses a larger inductor but runs cooler in a thermally constrained enclosure, while 1 MHz shrinks the magnetics for a dense board. ## Control features and PMBus telemetry Frequency control, phase control, and power-good output are built in — the phase control lets you interleave the two output phases for lower ripple at the input capacitor. The PMBus interface reports output voltage, current, and temperature back to the system manager; trimming the output via PMBus avoids a resistor divider change during prototype tuning.","metaTitle":"TI TPS40425RHAT Buck Controller, PMBus, 40-VQFN","metaDescription":"Texas Instruments TPS40425RHAT step-down DC/DC controller with PMBus, 2-phase, 200kHz-1.5MHz, -40 to 125°C. Active, RoHS3. Order TPS40425RHAT.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Clock Sync":"Yes","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"2","Package / Case":"40-VFQFN Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Frequency Control, Phase Control, Power Good","Number of Outputs":"2","Serial Interfaces":"PMBus","Output Configuration":"Positive","Frequency - Switching":"200kHz ~ 1.5MHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"Yes","Supplier Device Package":"40-VQFN (6x6)","Voltage - Supply (Vcc/Vdd)":"4.5V ~ 20V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.52","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.52000","currency":"USD"},{"qty":10,"price":"$8.60300","currency":"USD"},{"qty":25,"price":"$8.20320","currency":"USD"},{"qty":100,"price":"$7.12270","currency":"USD"},{"qty":250,"price":"$6.80256","currency":"USD"},{"qty":500,"price":"$6.20232","currency":"USD"},{"qty":1250,"price":"$5.66250","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6feb2453541474a232c5f7edb5dcc11a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Will TPS40425RHAT drop into a board designed for TPS53124RGET without a re-spin?","answer":"No. The TPS53124RGET is a single-phase controller with a different control architecture (D-CAP™) and no PMBus interface. The TPS40425RHAT is two-phase, requires PMBus configuration, and has a different pinout — a board layout change is needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS40425RHAT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS40425RHAT 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}}