{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS61221DCKT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS61221DCKT","canonicalUrl":"https://icboms.com/texas-instruments/TPS61221DCKT","factsUrl":"https://icboms.com/api/mcp/products/TPS61221DCKT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS61221DCKT, Step-Up (Boost) DC-DC Converter, Fixed 3.3V Output, 200mA Switch, 0.7V to 5.5V Input, Up to 2MHz Switching, SC-70-6 Package, -40°C to 125°C.","salesMarkdown":"## Fixed 3.3V rail from a single cell — what the input range buys you The 200mA switch current rating is the internal switch limit — the actual output current available at 3.3V depends on the input voltage and conversion efficiency. From a 1.5V input, expect roughly 80-100 mA output before the switch cycle limit is hit. ## Switching frequency and efficiency trade-off Switching at up to 2MHz lets the design use small inductors (1 µH to 4.7 µH range) and ceramic capacitors, shrinking the total solution footprint. ## Package and supply posture The supplier device package is SC-70-6; the listing also references 6-TSSOP, SC-88, SOT-363 as equivalent case codes. The product status is Active, meaning no end-of-life or last-time-buy risk for current production runs.","metaTitle":"TPS61221DCKT Boost Converter, 3.3V Fixed Output","metaDescription":"TI TPS61221DCKT step-up boost converter: 0.7V to 5.5V input, fixed 3.3V output, 200mA switch, up to 2MHz switching, SC-70-6.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Up","Topology":"Boost","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"6-TSSOP, SC-88, SOT-363","Product Status":"Active","lifecycle_stage":"eol_hot","Current - Output":"200mA (Switch)","Number of Outputs":"1","Base Product Number":"TPS61221","Output Configuration":"Positive","Frequency - Switching":"Up to 2MHz","Operating Temperature":"-40°C~125°C(TJ)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"5.5V","Voltage - Input (Min)":"0.7V","Voltage - Output (Max)":"-","Supplier Device Package":"SC-70-6","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8bbc73054574c870c17f6b20e9df315d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS61221DCKT/alternatives.json"},"ai":{"faq":[{"question":"Is TPS61221DCKT equivalent to TPS61220?","answer":"The TPS61220 is the adjustable-output sibling in the same family (base product number TPS61221). The TPS61221DCKT is the fixed 3.3V version; the TPS61220 uses an external resistor divider to set the output. They are pin-compatible and share the same package, but the output voltage setting differs."},{"question":"What is the maximum switching frequency of TPS61221DCKT?","answer":"The switching frequency goes up to 2MHz. The actual frequency varies with load and input voltage — the device uses a pulse-frequency modulation (PFM) scheme at light loads to maintain efficiency."},{"question":"What is the maximum output current of TPS61221DCKT?","answer":"The switch current limit is 200mA. The maximum output current at 3.3V depends on the input voltage and conversion losses — from a 1.5V input, the practical output current is roughly 80-100 mA. From a 3V input, output current can approach 150 mA."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS61221DCKT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS61221DCKT 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}}