{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL1451ACNSR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL1451ACNSR","canonicalUrl":"https://icboms.com/texas-instruments/TL1451ACNSR","factsUrl":"https://icboms.com/api/mcp/products/TL1451ACNSR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL1451ACNSR PWM controller IC, step-up/step-down/step-up-step-down function, buck/boost/flyback topology, 1kHz-500kHz switching frequency, 3.6V-50V supply, dual transistor driver outputs, 16-SOIC package, tape and reel.","salesMarkdown":"## Dual-output PWM controller for multi-rail power supplies The TL1451ACNSR is a PWM controller IC from Texas Instruments that handles step-up, step-down, and step-up/step-down conversion topologies — buck, boost, or flyback — from a single 3.6 V to 50 V supply rail. It drives two independent transistor-driver outputs, so one chip can regulate two separate voltage rails — say a 5 V logic rail and a 12 V analog rail — without a second controller. The switching frequency spans 1 kHz to 500 kHz, letting you trade inductor size against switching losses: lower frequencies use bigger magnetics but cut gate-drive loss; higher frequencies shrink the inductor at the cost of more heat in the FETs. ## Wide input range and industrial temperature grade Operating temperature from -20°C to 85°C (TA) fits most factory-floor and outdoor telecom enclosures; the -20°C low end covers cold-start conditions in unheated cabinets. No synchronous rectifier and no clock sync — the controller uses an external diode for the catch rectifier, which is standard for flyback and low-cost boost designs, and the free-running oscillator does not lock to an external clock.","metaTitle":"TL1451ACNSR Texas Instruments PWM Controller, 3.6-50V","metaDescription":"Texas Instruments TL1451ACNSR PWM controller IC, step-up/down/flyback, 1kHz-500kHz, dual output, 3.6-50V supply, -20 to 85°C, active production, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","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":"$2.2","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.20000","currency":"USD"},{"qty":10,"price":"$1.97500","currency":"USD"},{"qty":25,"price":"$1.86280","currency":"USD"},{"qty":100,"price":"$1.58720","currency":"USD"},{"qty":250,"price":"$1.49036","currency":"USD"},{"qty":500,"price":"$1.30406","currency":"USD"},{"qty":1000,"price":"$1.08051","currency":"USD"},{"qty":2000,"price":"$1.05450","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/69690ddb0cc27a922456eb2f2e837e8a.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL1451ACNSR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL1451ACNSR 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}}