{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL494IDG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL494IDG4","canonicalUrl":"https://icboms.com/texas-instruments/TL494IDG4","factsUrl":"https://icboms.com/api/mcp/products/TL494IDG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL494IDG4, PWM controller, 1kHz to 300kHz switching frequency, 45% max duty cycle, 7V to 40V supply, 16-SOIC package, -40°C to 85°C operating temperature.","salesMarkdown":"## PWM controller for isolated and non-isolated supplies The Texas Instruments TL494IDG4 is a fixed-frequency PWM controller that supports step-up, step-down, and step-up/step-down topologies including buck, boost, flyback, forward converter, full-bridge, half-bridge, and push-pull configurations. It delivers two transistor-driver outputs with a maximum duty cycle of 45% per output, suitable for push-pull and half-bridge designs where transformer reset timing matters. The switching frequency spans 1kHz to 300kHz, letting the designer trade off transformer size against core losses. Operating from a 7V to 40V supply, the controller can run directly off an unregulated bulk rail without a separate pre-regulator, simplifying the front-end bill of materials. ## Control features and package On-chip dead-time control and frequency control allow the designer to set the overlap blanking and oscillator timing with external resistors and capacitors.","metaTitle":"TL494IDG4 PWM Controller, 1kHz-300kHz, 45% Duty, 16-SOIC","metaDescription":"Texas Instruments TL494IDG4 PWM controller. Switching frequency 1kHz to 300kHz, max duty cycle 45%, supply 7V to 40V. Active production, 16-SOIC package.","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":"-40°C~85°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/TL494IDG4/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum duty cycle of TL494IDG4?","answer":"The maximum duty cycle per output is 45%. This limits the on-time in push-pull and half-bridge topologies and ensures adequate transformer reset time."},{"question":"What topologies does TL494IDG4 support?","answer":"The TL494IDG4 supports buck, boost, flyback, forward converter, full-bridge, half-bridge, and push-pull topologies — both isolated and non-isolated designs."},{"question":"What is the difference between TL494IDG4 and TL494CN?","answer":"The TL494IDG4 is the surface-mount 16-SOIC variant, while the TL494CN is the through-hole PDIP-16 version. Functionally they are identical; the choice depends on the assembly process and board layout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL494IDG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL494IDG4 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}}