{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC3845AD8TR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC3845AD8TR","canonicalUrl":"https://icboms.com/texas-instruments/UC3845AD8TR","factsUrl":"https://icboms.com/api/mcp/products/UC3845AD8TR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UC3845AD8TR, series UCx84xA, current-mode PWM controller, 8-SOIC surface-mount package, supply voltage 7.6V–30V, 11 mA supply current, 0°C–70°C operating temperature.","salesMarkdown":"## Supply range 7.6V–30V — what it buys you The UC3845AD8TR is a current-mode PWM controller from the UCx84xA family, designed for flyback, boost, and forward-converter topologies. The 11 mA supply current keeps the standby draw low enough for energy-star designs; mind the gate-drive charge when sizing the bias winding. ## 0°C–70°C commercial temp — keep it indoors The 0°C–70°C operating temperature range limits this part to commercial-grade equipment — office power supplies, appliance control boards, and indoor AC-DC converters. If your BOM needs an industrial or automotive temperature grade, the UC2845AD8TR extends the range to -40°C–85°C (TA) with the same pinout and supply specs. ## 8-SOIC footprint — layout checklist The 8-SOIC package has 0.154-inch body width and 3.90 mm width — standard SOIC-8 land pattern. No exposed thermal pad; the die heat couples through the leadframe into the PCB copper.","metaTitle":"UC3845AD8TR PWM Controller – 7.6V–30V, 8-SOIC, Active","metaDescription":"Texas Instruments UC3845AD8TR current-mode PWM controller. Supply range 7.6V–30V, 11 mA quiescent, 0°C–70°C temp grade, 8-SOIC. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"UCx84xA","Package":"Tape & Reel (TR) Cut Tape (CT)","Applications":"PWM Controller","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","Voltage - Input":"-0.3V ~ 6.3V","lifecycle_stage":"eol_hot","Current - Supply":"11 mA","Voltage - Supply":"7.6V ~ 30V","Base Product Number":"UC3845","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"8-SOIC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0700","priceTiers":[{"qty":1,"price":"$1.12000","currency":"USD"},{"qty":10,"price":"$1.00100","currency":"USD"},{"qty":25,"price":"$0.94960","currency":"USD"},{"qty":100,"price":"$0.78020","currency":"USD"},{"qty":250,"price":"$0.72928","currency":"USD"},{"qty":500,"price":"$0.64448","currency":"USD"},{"qty":1000,"price":"$0.50880","currency":"USD"},{"qty":2500,"price":"$0.48000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/167f8b16f2b0abe2748ff562a0463921.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/UC3845AD8TR/alternatives.json"},"ai":{"faq":[{"question":"Can UC3845AD8TR replace UC3845AD8?","answer":"The UC3845AD8TR is the tape-and-reel variant of the same die in the same 8-SOIC package. The base product number UC3845 is identical; the 'TR' suffix indicates reel packaging. Functionally and pin-for-pin, they are the same part — the reel format just changes how it is delivered to the pick-and-place."},{"question":"What is the closest functional second-source to UC3845AD8TR?","answer":"The UC2845AD8TR is the industrial-temperature version of the same controller. Supply voltage, pinout, and switching characteristics match. The delta is the operating temperature range: UC2845AD8TR covers -40°C–85°C (TA) versus the UC3845AD8TR's 0°C–70°C. If your ambient stays above freezing, the UC3845AD8TR is the lower-cost choice."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC3845AD8TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC3845AD8TR 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}}