{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS61085PWG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS61085PWG4","canonicalUrl":"https://icboms.com/texas-instruments/TPS61085PWG4","factsUrl":"https://icboms.com/api/mcp/products/TPS61085PWG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS61085PWG4, Step-Up Boost Converter, Adjustable Output, 2A Switch, 650kHz/1.2MHz, 8-TSSOP, -40°C to 85°C.","salesMarkdown":"## Boost converter with a 2 A switch and dual-frequency option The Texas Instruments TPS61085PWG4 is a non-synchronous step-up (boost) DC-DC converter built around a 2 A internal switch. It accepts an input from 2.3 V to 6 V and delivers an adjustable output from 2.8 V up to 18.5 V — a range that covers Li-ion battery rails, 5 V USB supplies, and 12 V intermediate buses from a single part. A pin-strap selects between 650 kHz and 1.2 MHz switching frequency. The lower frequency favours higher efficiency and a wider inductor choice; the higher frequency shrinks the inductor footprint at the cost of slightly higher switching losses. This is the first decision the designer makes — it sets the inductor value, the output capacitor ripple, and the layout loop area. ## Non-synchronous topology — budget the external diode The TPS61085 is a non-synchronous boost (no synchronous rectifier), so an external Schottky diode is required between the switch pin and the output. The diode's forward voltage drop adds to the conduction loss — at 2 A switch current a 0.45 V Schottky dissipates nearly 1 W, which the diode package must sink. The buyer should pair this with a diode rated for the output voltage plus a healthy derating margin. The single-output positive-configuration regulator uses current-mode control for fast line and load transient response. No external compensation network is needed — the internal loop is stable over the full output range with the recommended output capacitor ESR window. It is not specified for under-hood or extended-temperature downhole environments, but the -40°C low end covers cold-start conditions in outdoor enclosures and engine-bay-adjacent compartments. For the 2 A switch current, a 2-layer board with adequate ground-plane copper is sufficient; a 4-layer board with thermal vias improves heat spreading if the ambient temperature approaches the 85°C ceiling. The buyer can commit this BOM line without qualification-change exposure for the foreseeable production horizon. Sourced through independent distribution.","metaTitle":"TPS61085PWG4 2A Boost Converter, 650kHz/1.2MHz, TSSOP-8","metaDescription":"Texas Instruments TPS61085PWG4 step-up DC-DC converter. 2A switch, 2.3-6V input, adj. output to 18.5V. Active lifecycle. TSSOP-8 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tube","Function":"Step-Up","Topology":"Boost","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP (0.173\\\", 4.40mm Width)","lifecycle_stage":"eol_hot","Current - Output":"2A (Switch)","Number of Outputs":"1","Base Product Number":"TPS61085","Output Configuration":"Positive","Frequency - Switching":"650kHz, 1.2MHz","Operating Temperature":"-40°C~85°C(TA)","Synchronous Rectifier":"No","Voltage - Input (Max)":"6V","Voltage - Input (Min)":"2.3V","Voltage - Output (Max)":"18.5V","Supplier Device Package":"8-TSSOP","Voltage - Output (Min/Fixed)":"2.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$58.8000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ade6096d49003e53e07b47a8d2564e9e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS61085PWG4/alternatives.json"},"ai":{"faq":[{"question":"Is TPS61085PWG4 a synchronous boost converter?","answer":"No — it is a non-synchronous boost converter. An external Schottky diode must be added between the switch pin and the output. The datasheet recommends a diode rated for the output voltage plus margin."},{"question":"What package does TPS61085PWG4 come in?","answer":"It is supplied in an 8-pin TSSOP package (8-TSSOP, 0.173\" body width, 4.40 mm width). The shipping medium is Tube."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS61085PWG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS61085PWG4 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}}