{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS62221DDCT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS62221DDCT","canonicalUrl":"https://icboms.com/texas-instruments/TPS62221DDCT","factsUrl":"https://icboms.com/api/mcp/products/TPS62221DDCT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS62221DDCT, Step-Down Buck Regulator, 1 Output, 400 mA, 1.5 V Fixed Output, 2.5 V to 6 V Input, 1.25 MHz, SOT-23-5 Thin, -40°C to 85°C.","salesMarkdown":"The TPS62221DDCT is a fixed-output step-down (buck) converter from Texas Instruments that delivers 400 mA at 1.5 V. Switching at 1.25 MHz, the part uses a synchronous rectifier — no external Schottky diode needed — which keeps the BOM count low and the efficiency curve competitive at moderate loads. ## 400 mA load budget and thermal derating The 400 mA output ceiling is the continuous current rating; the actual load the part can deliver at elevated ambient temperature depends on the board copper area under the SOT-23-5 Thin package. Because the output is fixed at 1.5 V, there is no feedback divider on the board — the resistor network is internal, saving two external components and one layout trace. The positive output configuration and single-output topology simplify the power-tree design.","metaTitle":"TPS62221DDCT Step-Down Regulator, 400 mA, 1.5 V Fixed Output","metaDescription":"Texas Instruments TPS62221DDCT buck converter, 2.5 V to 6 V input, 1.5 V fixed output at 400 mA. SOT-23-5 Thin package, 1.25 MHz 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":"Fixed","Mounting Type":"Surface Mount","Package / Case":"SOT-23-5 Thin, TSOT-23-5","Product Status":"Active","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":"$0.9702","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e0274b1b9bfa903b303a9f5c4630edbb.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS62221DDCT/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to TPS62221DDCT?","answer":"The TPS62221 family includes fixed-output voltage options at other levels (e.g., 1.2 V, 1.8 V, 3.3 V) in the same SOT-23-5 Thin footprint. If the 1.5 V rail is not the right voltage, a different TPS62221 variant with the desired fixed output can be used without a PCB layout change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS62221DDCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS62221DDCT 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}}