{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL1451ACNS","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL1451ACNS","canonicalUrl":"https://icboms.com/texas-instruments/TL1451ACNS","factsUrl":"https://icboms.com/api/mcp/products/TL1451ACNS","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL1451ACNS, dual-channel PWM controller, buck/boost/flyback topology, 1 kHz–500 kHz switching, 3.6 V–50 V supply, 16-SOIC package, tube.","salesMarkdown":"## Switching frequency and control flexibility The oscillator runs from 1 kHz to 500 kHz, settable with external R-C components. At the low end you get clean switching for noise-sensitive analog sections; at the high end you shrink magnetics and output capacitors. The frequency control pin gives you the option to synchronise to an external clock if needed — though the part itself has no internal clock-sync feature, so for multi-phase designs you'll want to drive the RT/CT pin from a master oscillator. ## Temperature grade and operating environment Rated for -20°C to 85°C ambient, this part fits commercial and light-industrial environments — indoor power supplies, base stations, test equipment, and appliance control boards. It is not specified for automotive under-hood or extended industrial (-40°C) use; if you need that, the LM5150QURUMRQ1 carries AEC-Q100 qualification and a -40°C to 150°C junction range, though it is a single-output boost controller with a different feature set. ## Lifecycle and sourcing Texas Instruments lists the TL1451ACNS as Active with ROHS3 compliance.","metaTitle":"TL1451ACNS PWM Controller, Buck/Boost/Flyback, 16-SOIC","metaDescription":"TL1451ACNS dual-output PWM controller from TI. Supports buck, boost, and flyback topologies. 3.6 V to 50 V supply, 1 kHz–500 kHz switching. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tube","Function":"Step-Up, Step-Down, Step-Up/Step-Down","Topology":"Buck, Boost, Flyback","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"16-SOIC (0.209\\\", 5.30mm Width)","lifecycle_stage":"eol_hot","Control Features":"Frequency Control","Number of Outputs":"2","Output Configuration":"Positive","Frequency - Switching":"1kHz ~ 500kHz","Operating Temperature":"-20°C ~ 85°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"16-SO","Voltage - Supply (Vcc/Vdd)":"3.6V ~ 50V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.56","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.56000","currency":"USD"},{"qty":10,"price":"$2.30300","currency":"USD"},{"qty":25,"price":"$2.17280","currency":"USD"},{"qty":100,"price":"$1.85140","currency":"USD"},{"qty":250,"price":"$1.73840","currency":"USD"},{"qty":500,"price":"$1.52110","currency":"USD"},{"qty":1000,"price":"$1.26034","currency":"USD"},{"qty":2500,"price":"$1.23000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/69690ddb0cc27a922456eb2f2e837e8a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can TL1451ACNS be used in boost or flyback topologies?","answer":"Yes, the TL1451ACNS supports step-up (boost) and flyback topologies in addition to step-down (buck). The output configuration is positive, and the transistor driver outputs can drive an external switch for any of these converter types."},{"question":"What is a direct replacement for TL1451ACNS?","answer":"There is no pin-compatible direct replacement listed by Texas Instruments. The UCC2806DWTR is a dual-output PWM controller with similar topology support (boost, flyback, forward) but differs in supply voltage (8 V typical), synchronous rectification, and package options. Verify pin compatibility and control features before substituting."},{"question":"What is the switching frequency range of TL1451ACNS?","answer":"The oscillator frequency is programmable from 1 kHz to 500 kHz using an external resistor and capacitor on the RT/CT pin. This range covers low-frequency designs for noise-sensitive circuits and higher-frequency designs for smaller magnetics."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL1451ACNS","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL1451ACNS 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}}