{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS40305DRCR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS40305DRCR","canonicalUrl":"https://icboms.com/texas-instruments/TPS40305DRCR","factsUrl":"https://icboms.com/api/mcp/products/TPS40305DRCR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS40305DRCR, step-down buck controller, 1.2MHz switching frequency, 3V–20V supply, synchronous rectification, 10-VSON (3x3) package, -40°C to 125°C junction temperature.","salesMarkdown":"The Texas Instruments TPS40305DRCR is a single-phase synchronous buck controller designed for step-down regulation from a 3V to 20V supply rail. It drives an external N-channel MOSFET pair and integrates synchronous rectification for higher efficiency at low output voltages — a common requirement in point-of-load (POL) converters for telecom, networking, and industrial equipment. Control features include Enable, Power Good, and Soft Start, giving the designer sequenced start-up and fault reporting without extra glue logic. The 1.2 MHz switching rate is the headline parameter for the power-stage design. It pushes the inductor value down into the sub-microhenry range, which shrinks the magnetic component physically and reduces its DC resistance losses. The trade-off is higher switching losses in the FETs and tighter layout constraints to keep the switch node loop small. Plan for a low-ESR ceramic input capacitor close to the drain of the high-side FET and a ground plane under the controller to manage the di/dt edges. The 85% maximum duty cycle limits the step-down ratio at low input voltages — for a 3.3V output from a 5V rail the margin is comfortable, but from a 3.3V input you are near the ceiling.","metaTitle":"TI TPS40305DRCR Buck Controller, 1.2MHz, 10-VSON","metaDescription":"Texas Instruments TPS40305DRCR step-down buck controller, 1.2MHz switching frequency, 3V-20V supply, -40°C to 125°C range, synchronous rectification, 10-VSON","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"10-VFDFN Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Enable, Power Good, Soft Start","Duty Cycle (Max)":"85%","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"1.2MHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Synchronous Rectifier":"Yes","Supplier Device Package":"10-VSON (3x3)","Voltage - Supply (Vcc/Vdd)":"3V ~ 20V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.57","priceTiers":[{"qty":1,"price":"$2.57000","currency":"USD"},{"qty":10,"price":"$2.31200","currency":"USD"},{"qty":25,"price":"$2.18080","currency":"USD"},{"qty":100,"price":"$1.85820","currency":"USD"},{"qty":250,"price":"$1.74476","currency":"USD"},{"qty":500,"price":"$1.52666","currency":"USD"},{"qty":1000,"price":"$1.26495","currency":"USD"},{"qty":3000,"price":"$1.23450","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ce3c135e22d451db2783681c6fea9406.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS40305DRCR/alternatives.json"},"ai":{"faq":[{"question":"Is TPS40305DRCR lead-free and RoHS compliant?","answer":"Yes — the TPS40305DRCR is ROHS3 Compliant. The 10-VSON package is compatible with lead-free reflow profiles."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS40305DRCR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS40305DRCR 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}}