{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS61258YFFT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS61258YFFT","canonicalUrl":"https://icboms.com/texas-instruments/TPS61258YFFT","factsUrl":"https://icboms.com/api/mcp/products/TPS61258YFFT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS61258YFFT, step-up (boost) DC-DC converter, fixed 4.5 V output, 3.9 A switch current, 3.5 MHz switching frequency, synchronous rectification, 9-pin DSBGA package, -40°C to 85°C operation.","salesMarkdown":"## Fixed 4.5 V boost for tight analog rails The TPS61258YFFT is a step-up regulator from Texas Instruments that delivers a fixed 4.5 V output — no external feedback divider needed, which saves two resistors and one feedback-node noise path. The internal switch is rated for 3.9 A, so the output can support loads up to roughly 2.5 A at 4.5 V from a 3.3 V input, depending on inductor selection and efficiency. The 3.5 MHz switching frequency allows the use of small 1 µH to 2.2 µH inductors and ceramic output capacitors, keeping the total solution footprint compact. ## Input range and output capability The input voltage range runs from 2.65 V up to 4.35 V, which covers two-cell alkaline, single-cell Li-ion, and 3.3 V regulated rails. With a 3.3 V input, the part can boost to 4.5 V and deliver over 2 A to the load — enough to power a small RF PA or a string of LEDs. The fixed 4.5 V output is a common rail for USB On-The-Go (OTG) power, sensor bias, and as a pre-regulator for a low-dropout linear regulator that needs headroom. Because the output is fixed, there is no way to adjust it upward or downward — confirm that 4.5 V matches your load before layout. The 9-DSBGA package requires careful PCB layout — the 0.50 mm pitch and small pad size demand a 4-layer board for fan-out and adequate thermal relief.","metaTitle":"TPS61258YFFT – TI 4.5V Fixed Boost Converter, 3.9A Switch","metaDescription":"Texas Instruments TPS61258YFFT step-up boost regulator delivers a fixed 4.5V output at 3.9A switch current. Active lifecycle, 3.5MHz switching, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","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":"9-UFBGA, DSBGA","Product Status":"Active","lifecycle_stage":"eol_hot","Current - Output":"3.9A (Switch)","Number of Outputs":"1","Base Product Number":"TPS61258","Output Configuration":"Positive","Frequency - Switching":"3.5MHz","Operating Temperature":"-40°C~85°C(TA)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"4.35V","Voltage - Input (Min)":"2.65V","Voltage - Output (Max)":"-","Supplier Device Package":"9-DSBGA","Voltage - Output (Min/Fixed)":"4.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5700","priceTiers":[{"qty":1,"price":"$1.57000","currency":"USD"},{"qty":10,"price":"$1.41000","currency":"USD"},{"qty":25,"price":"$1.33040","currency":"USD"},{"qty":100,"price":"$1.13340","currency":"USD"},{"qty":250,"price":"$1.06424","currency":"USD"},{"qty":500,"price":"$0.93120","currency":"USD"},{"qty":1250,"price":"$0.77158","currency":"USD"},{"qty":2500,"price":"$0.75300","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/41b2e676963ac6d71f347b280c43dfe6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS61258YFFT/alternatives.json"},"ai":{"faq":[{"question":"What is the exact fixed output voltage of TPS61258YFFT?","answer":"The TPS61258YFFT outputs a fixed 4.5 V. There is no adjustment pin — the voltage is set internally."},{"question":"Can TPS61258YFFT boost from 3.3 V to 4.5 V?","answer":"Yes. The input range is 2.65 V to 4.35 V, so a 3.3 V rail is well within the operating window. The 3.9 A switch supports over 2 A output at 4.5 V from a 3.3 V input, depending on inductor and efficiency."},{"question":"What package does TPS61258YFFT come in?","answer":"The TPS61258YFFT is supplied in a 9-pin DSBGA package. The 0.50 mm ball pitch demands careful PCB layout and a 4-layer board for fan-out."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS61258YFFT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS61258YFFT 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}}