{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL494CDRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL494CDRG4","canonicalUrl":"https://icboms.com/texas-instruments/TL494CDRG4","factsUrl":"https://icboms.com/api/mcp/products/TL494CDRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL494CDRG4 PWM controller, 1kHz~300kHz switching frequency, 45% max duty cycle, 7V~40V supply, 16-SOIC package, surface mount, active production.","salesMarkdown":"## What the 45% duty ceiling means for your topology choice The TL494CDRG4 is a fixed-frequency PWM controller from TI's TL494 family, designed for push-pull, half-bridge, full-bridge, and flyback topologies. Its 45% maximum duty cycle per output forces a two-transistor forward or bridge architecture in any application requiring >50% on-time — you cannot run a single-ended forward converter with this part. ## Switching frequency range and transformer sizing The oscillator runs from 1 kHz to 300 kHz. At the low end you get large magnetics but good noise margin; at 300 kHz the transformer shrinks but core losses and layout parasitics demand careful PCB design. The 7 V to 40 V supply range lets you power the controller directly from a rectified 24 V industrial bus or a 12 V battery rail without an extra regulator.","metaTitle":"TL494CDRG4 PWM Controller, 1kHz-300kHz, 45% Duty Cycle","metaDescription":"Texas Instruments TL494CDRG4 PWM controller IC. Switching frequency 1kHz to 300kHz, max duty cycle 45%, 7V to 40V supply. Active production.","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":"Tape & Reel (TR)","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/TL494CDRG4/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum duty cycle of TL494CDRG4?","answer":"The maximum duty cycle per output is 45%. This limits the part to bridge and push-pull topologies; it cannot be used in a single-ended forward converter above 50% duty."},{"question":"What is TL494CDRG4 used for?","answer":"It is a PWM controller for step-up, step-down, and step-up/step-down converters using buck, boost, flyback, forward, half-bridge, full-bridge, or push-pull topologies. Typical applications include switch-mode power supplies, DC-DC converters, and battery chargers."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL494CDRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL494CDRG4 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}}