{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL494CDG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL494CDG4","canonicalUrl":"https://icboms.com/texas-instruments/TL494CDG4","factsUrl":"https://icboms.com/api/mcp/products/TL494CDG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL494CDG4 PWM controller, 16-SOIC, switching frequency 1kHz to 300kHz, 45% max duty cycle, 7V to 40V supply, 2 outputs, transistor driver output type.","salesMarkdown":"## PWM controller for isolated and non-isolated topologies The Texas Instruments TL494CDG4 is a fixed-frequency PWM controller that supports buck, boost, flyback, forward converter, full-bridge, half-bridge, and push-pull topologies. It operates from a 7V to 40V supply and delivers two transistor-driver outputs with a maximum duty cycle of 45% per output. The switching frequency range of 1kHz to 300kHz covers the typical operating band for offline flyback converters at the low end and push-pull or half-bridge designs at the high end. The 45% duty-cycle ceiling per output enforces dead time between the two output phases, which prevents transformer saturation in push-pull and half-bridge stages. ## Supply rail and control features The wide Vcc range of 7V to 40V allows the controller to be biased directly from the rectified DC bus in offline supplies without a separate auxiliary winding. The built-in dead-time control and frequency control pins give the designer independent adjustment of the output pulse width and the oscillator timing. The TL494CDG4 does not include a clock-sync input or synchronous rectifier drive — these are external additions when needed. The output configuration is positive, and the single-phase output drives two transistor stages internally.","metaTitle":"TL494CDG4 PWM Controller, 1kHz–300kHz, 7V–40V, 16-SOIC","metaDescription":"TL494CDG4 PWM controller from Texas Instruments. Switching frequency 1kHz to 300kHz, 45% max duty cycle, 7V to 40V supply. Active production, 16-SOIC.","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 (0.154\\\", 3.90mm Width)","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-SOIC","Voltage - Supply (Vcc/Vdd)":"7V ~ 40V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c7861fe9c4cffdf82e84953a76a5ab14.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL494CDG4/alternatives.json"},"ai":{"faq":[{"question":"Can TL494CDG4 be used in a buck converter topology?","answer":"Yes. For a buck converter, the 45% maximum duty cycle per output is sufficient for step-down ratios that keep the on-time within that limit."},{"question":"What is the maximum duty cycle of TL494CDG4?","answer":"The maximum duty cycle per output is 45%. This is a characteristic of the classic TL494 architecture and is designed to guarantee dead time between the two output phases in push-pull and half-bridge stages."},{"question":"Is TL494CDG4 RoHS compliant?","answer":"The TL494CDG4 is the lead-free (RoHS-compliant) ordering code in the TL494 family. The 'G4' suffix indicates a green/RoHS-compliant finish from Texas Instruments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL494CDG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL494CDG4 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}}