{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS62221DDCRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS62221DDCRG4","canonicalUrl":"https://icboms.com/texas-instruments/TPS62221DDCRG4","factsUrl":"https://icboms.com/api/mcp/products/TPS62221DDCRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS62221DDCRG4, Step-Down Buck Regulator, Fixed 1.5V Output, 400mA, 1.25MHz, Synchronous Rectifier, SOT-23-Thin/TSOT-23-5, -40°C to 85°C.","salesMarkdown":"The TPS62221DDCRG4 is a fixed-output step-down (buck) converter from Texas Instruments, delivering a regulated 1.5 V from an input range of 2.5 V to 6 V. It targets low-power rails — think MCU core voltage, sensor bias, or wireless-module supply in battery-powered or 3.3 V/5 V systems. The fixed output means no external feedback divider; the 1.5 V is set internally, saving two resistors and one feedback-node noise source. ## 400 mA output — sizing the load budget Rated for 400 mA continuous output, this regulator fits sub-400 mA rails. The 1.25 MHz switching frequency lets the designer use a small inductor (typically 2.2 µH to 4.7 µH) and a 10 µF output cap, keeping the BOM compact. It comes in a SOT-23-Thin (TSOT-23-5) package — five pins, 2.9 mm × 1.6 mm footprint, 1.1 mm max height. The thin profile fits low-profile enclosures like SSD modules or handheld instruments.","metaTitle":"TPS62221DDCRG4 Buck Regulator, 1.5V Fixed Output, 400mA","metaDescription":"Texas Instruments TPS62221DDCRG4 step-down DC-DC converter. Fixed 1.5V output, 400mA, 1.25MHz switching, synchronous rectifier.","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)","Function":"Step-Down","Topology":"Buck","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"SOT-23-5 Thin, TSOT-23-5","lifecycle_stage":"eol_hot","Current - Output":"400mA","Number of Outputs":"1","Base Product Number":"TPS62221","Output Configuration":"Positive","Frequency - Switching":"1.25MHz","Operating Temperature":"-40°C~85°C(TA)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"6V","Voltage - Input (Min)":"2.5V","Voltage - Output (Max)":"-","Supplier Device Package":"SOT-23-THIN","Voltage - Output (Min/Fixed)":"1.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$58.8000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e0274b1b9bfa903b303a9f5c4630edbb.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS62221DDCRG4/alternatives.json"},"ai":{"faq":[{"question":"Is TPS62221DDCRG4 pin compatible with TPS62220?","answer":"Yes, the TPS62221DDCRG4 is pin compatible with the TPS62220 in the same SOT-23-Thin package. The difference is the output voltage: TPS62221 is fixed at 1.5 V, while TPS62220 is fixed at 1.2 V. The pinout, switching frequency, and current rating are identical, so a board designed for one can accept the other by changing the output cap if needed."},{"question":"Does TPS62221DDCRG4 require external compensation?","answer":"No. The TPS62221DDCRG4 is internally compensated. The external BOM is just the input cap, output cap, and inductor — no compensation network to tune."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS62221DDCRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS62221DDCRG4 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}}