{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS61258YFFR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS61258YFFR","canonicalUrl":"https://icboms.com/texas-instruments/TPS61258YFFR","factsUrl":"https://icboms.com/api/mcp/products/TPS61258YFFR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS61258YFFR, step-up boost converter, 3.9A switch, 3.5 MHz, fixed 4.5V output, 9-DSBGA, -40°C to 85°C, active.","salesMarkdown":"## 3.9A switch, 9-DSBGA — what the boost delivers The Texas Instruments TPS61258YFFR is a fixed-output step-up (boost) converter built around a 3.9A integrated switch, switching at 3.5 MHz. The 2.65 V to 4.35 V input range and fixed 4.5 V output target single-cell Li-ion or 3.3 V rail applications that need a regulated 4.5 V bus — USB OTG, sensor bias, or small motor pre-drive supplies. The 9-DSBGA package (0.8 mm × 0.8 mm nominal) and 3.5 MHz switching let the designer shrink the inductor to a 1.0 mm × 0.5 mm footprint and use a 4.7 µH or 2.2 µH part, keeping the total solution area under 10 mm². ## 3.5 MHz — inductor and capacitor selection The 3.5 MHz switching frequency pulls the inductor value down to the 1 µH to 4.7 µH range, which fits a 1008 or 0805 footprint. The trade-off is switching loss: at light loads the quiescent current matters more than the core loss, so the efficiency curve at 1 mA to 10 mA output is worth checking against the battery life target. Synchronous rectification keeps the rectifier drop below 100 mV at moderate loads, which helps hold efficiency above 85% across the 50 mA to 500 mA output range typical for a 4.5 V rail. ## DSBGA footprint — layout constraints The 9-DSBGA (9-bump wafer-level chip-scale package) has a 0.5 mm bump pitch. The board requires a 4-layer stack-up with microvias or via-in-pad to route the input, output, and switch node traces without choking the 3.9 A peak current. The thermal pad on the DSBGA is the backside of the die — solder the bumps and rely on the copper pours on layer 2 for heat spreading.","metaTitle":"TPS61258YFFR boost converter, 3.9A switch, 3.5 MHz, DSBGA","metaDescription":"Texas Instruments TPS61258YFFR step-up boost converter, 3.9A switch, 3.5 MHz fixed 4.5V output, 9-DSBGA, -40 to 85°C.","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":"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":"$0.6270","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/41b2e676963ac6d71f347b280c43dfe6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS61258YFFR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to TPS61258YFFR in this component family?","answer":"The base product number TPS61258 suggests this is the fixed-output variant of the TPS6125x family — a variable-output version (TPS6125x with adjustable feedback) would require a different BOM layout. Confirm the output voltage and package requirement before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS61258YFFR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS61258YFFR 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}}