{"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. The synchronous rectifier eliminates the external Schottky diode, saving a component and improving efficiency at light loads. ## 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":["Power Management (PMIC / Gate Driver)"],"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","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8bbc73054574c870c17f6b20e9df315d.pdf","sourceUrl":null},"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":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}