{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL494CNS","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL494CNS","canonicalUrl":"https://icboms.com/texas-instruments/TL494CNS","factsUrl":"https://icboms.com/api/mcp/products/TL494CNS","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL494CNS, PWM controller, Step-Up/Step-Down/Step-Up/Step-Down, Buck/Boost/Flyback/Forward/Half-Bridge/Push-Pull, 1kHz~300kHz, 7V~40V, 45% duty cycle, 2 outputs, 16-SOIC, Tube.","salesMarkdown":"## Multi-topology PWM controller for isolated and non-isolated supplies The TL494CNS is a fixed-frequency PWM controller that handles step-up, step-down, and step-up/step-down topologies including buck, boost, flyback, forward converter, half-bridge, and push-pull configurations. At 45% max duty cycle per output, the TL494CNS cannot exceed a 45% on-time in a single-ended topology. In push-pull or half-bridge, the two outputs interleave to achieve effective 90% duty cycle at the transformer primary. The 1 kHz to 300 kHz range lets you run at lower frequencies for through-hole magnetics or push higher for smaller planar transformers. The RT/CT timing components set the oscillator; no external clock sync is available. Dead-time control (pin 4) allows fine adjustment of the off-time between output pulses, critical for avoiding shoot-through in half-bridge and push-pull stages. The supplier device package is 16-SO. The shipping medium is Tube — not Tape & Reel — so plan for tube-to-feeder conversion if your pick-and-place line expects reels. Confirm the tube quantity against your batch size to avoid line splits.","metaTitle":"TL494CNS PWM Controller, 1kHz–300kHz, 7V–40V, 16-SOIC","metaDescription":"TL494CNS PWM controller from Texas Instruments. Multi-topology: buck, boost, flyback, push-pull. 1kHz–300kHz switching, 45% max duty cycle, 7V–40V supply.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tube","Function":"Step-Up, Step-Down, Step-Up/Step-Down","Topology":"Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"16-SOIC (0.209\\\", 5.30mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"Dead Time Control, Frequency Control","Duty Cycle (Max)":"45%","Number of Outputs":"2","Serial Interfaces":"-","Base Product Number":"TL494","Output Configuration":"Positive","Frequency - Switching":"1kHz ~ 300kHz","Operating Temperature":"0°C~70°C(TA)","Synchronous Rectifier":"No","Supplier Device Package":"16-SO","Voltage - Supply (Vcc/Vdd)":"7V ~ 40V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c7861fe9c4cffdf82e84953a76a5ab14.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL494CNS/alternatives.json"},"ai":{"faq":[{"question":"Can TL494CNS be used in a buck converter?","answer":"Yes. The TL494CNS supports buck topology, along with boost, flyback, forward converter, half-bridge, and push-pull. For a buck converter, the 45% max duty cycle limits the step-down ratio — the output voltage cannot exceed 45% of the input voltage in a single-ended buck."},{"question":"What is the maximum duty cycle of TL494CNS?","answer":"45% maximum duty cycle per output. In push-pull or half-bridge configurations, the two outputs interleave to achieve an effective 90% duty cycle at the transformer primary."},{"question":"What is the difference between TL494CNS and TL494CD?","answer":"Both are TL494 PWM controllers from Texas Instruments. The TL494CNS ships in a 16-SOIC package (0.209\" body width) in Tube form, while the TL494CD is the same die in a 16-SOIC package but typically supplied in Tape & Reel. Functionally identical — the difference is the shipping medium and possibly the reel quantity. Confirm the package code suffix (NS vs D) against your BOM's preferred supplier packaging."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL494CNS","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL494CNS 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}}