{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL494CDBRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL494CDBRG4","canonicalUrl":"https://icboms.com/texas-instruments/TL494CDBRG4","factsUrl":"https://icboms.com/api/mcp/products/TL494CDBRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL494CDBRG4, PWM Controller, Step-Up/Step-Down/Step-Up/Step-Down, Buck/Boost/Flyback/Forward/Full-Bridge/Half-Bridge/Push-Pull, 1 kHz to 300 kHz, 7 V to 40 V, 16-SSOP, 0°C to 70°C.","salesMarkdown":"## PWM controller with wide topology support — now obsolete The TL494CDBRG4 is a fixed-frequency PWM controller from Texas Instruments that supports step-up, step-down, and step-up/step-down regulation across buck, boost, flyback, forward converter, full-bridge, half-bridge, and push-pull topologies. Switching frequency spans 1 kHz to 300 kHz, and the supply range covers 7 V to 40 V, suiting it for industrial auxiliary supplies, telecom bricks, and off-line flyback converters. ## Switching frequency and duty-cycle limits The oscillator is programmable from 1 kHz to 300 kHz via an external RT and CT. Maximum duty cycle is 45 % per output, which limits the usable range in single-ended topologies like flyback and forward converters. Two transistor-driver outputs deliver positive drive with dead-time control and frequency control available on the control pins. Housed in a 16-SSOP (0.209\", 5.30 mm width) surface-mount package, supplier device package 16-SSOP. The part does not include a synchronous rectifier output or clock-sync capability; it is a classic voltage-mode PWM controller. ## Sourcing an obsolete PWM controller With an official lifecycle status of Obsolete, the TL494CDBRG4 is no longer manufactured by Texas Instruments.","metaTitle":"TL494CDBRG4 PWM Controller, Obsolete, 1 kHz–300 kHz, 16-SSOP","metaDescription":"TL494CDBRG4 from Texas Instruments: obsolete PWM controller, 7 V to 40 V supply, 1 kHz to 300 kHz switching, buck/boost/flyback topologies.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","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-SSOP (0.209\\\", 5.30mm Width)","Product Status":"Obsolete","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-SSOP","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/TL494CDBRG4/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL494CDBRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL494CDBRG4 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}}