{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS621361RGXT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS621361RGXT","canonicalUrl":"https://icboms.com/texas-instruments/TPS621361RGXT","factsUrl":"https://icboms.com/api/mcp/products/TPS621361RGXT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS621361RGXT, step-down (buck) switching regulator, 4A output, 3V to 17V input, 1 MHz switching frequency, adjustable output from 0.8V to 12V, synchronous rectification, 11-VQFN-HR (2x3 mm) package, -40°C to 125°C junction temperature.","salesMarkdown":"## 4A buck in a 2x3 mm QFN — load budget and board fit The TPS621361RGXT delivers 4A continuous output from a 3V to 17V input rail, switching at 1 MHz to keep the inductor and output capacitor physically small. The 11-VQFN-HR (2x3 mm) package is one of the smallest footprints for a 4A monolithic buck, but the 0.50 mm pitch exposed-pad land pattern demands a thermal via array and a controlled stencil — a 2-layer board with a solid ground plane under the pad is the minimum for full current capability. Synchronous rectification eliminates the external catch diode; the internal low-side FET handles the freewheeling path, which keeps the BOM to one inductor, two ceramic caps, and the feedback divider. ## Output voltage range and adjustment The adjustable output spans 0.8V to 12V, set by a resistor divider from the FB pin. The 0.8V minimum floor suits low-voltage core rails; the 12V ceiling covers most 12V intermediate-bus applications. The 1 MHz fixed switching frequency keeps the ripple amplitude predictable across the full output range.","metaTitle":"TPS621361RGXT 4A Buck Regulator, 3-17V Input, 1 MHz, 11-VQFN","metaDescription":"Texas Instruments TPS621361RGXT step-down buck regulator, 4A output, 3V-17V input, 1 MHz switching, adjustable output down to 0.8V, -40°C to 125°C, active","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","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":"11-VFQFN","Product Status":"Active","lifecycle_stage":"eol_hot","Current - Output":"4A","Number of Outputs":"1","Base Product Number":"TPS621361","Output Configuration":"Positive","Frequency - Switching":"1MHz","Operating Temperature":"-40°C~125°C(TJ)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"17V","Voltage - Input (Min)":"3V","Voltage - Output (Max)":"12V","Supplier Device Package":"11-VQFN-HR (2x3)","Voltage - Output (Min/Fixed)":"0.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.4200","priceTiers":[{"qty":1,"price":"$2.42000","currency":"USD"},{"qty":10,"price":"$2.17100","currency":"USD"},{"qty":25,"price":"$2.04840","currency":"USD"},{"qty":100,"price":"$1.74530","currency":"USD"},{"qty":250,"price":"$1.63876","currency":"USD"},{"qty":500,"price":"$1.43392","currency":"USD"},{"qty":1250,"price":"$1.18810","currency":"USD"},{"qty":2500,"price":"$1.15950","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/11f3a0dc9b75e2622a34991c9e2c0c88.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS621361RGXT/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS621361RGXT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS621361RGXT 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}}