{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL594IN","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL594IN","canonicalUrl":"https://icboms.com/texas-instruments/TL594IN","factsUrl":"https://icboms.com/api/mcp/products/TL594IN","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL594IN PWM controller, step-up/step-down/step-up/step-down function, buck/boost/flyback/forward/full-bridge/half-bridge/push-pull topology, 1 kHz to 300 kHz switching frequency, 97% max duty cycle, 7 V to 40 V supply, 16-PDIP package, through-hole mount, -40°C to 85°C operating temperature.","salesMarkdown":"The Texas Instruments TL594IN is a fixed-frequency PWM controller built for a wide range of isolated and non-isolated topologies — buck, boost, flyback, forward converter, half-bridge, full-bridge, and push-pull. It drives a pair of transistor outputs with a single output phase, configurable for positive output polarity. ## Switching frequency and duty cycle — the design envelope The oscillator runs from 1 kHz to 300 kHz, set by an external RT and CT. That range covers most line-frequency and medium-frequency transformer designs for industrial power supplies and motor-drive housekeeping rails. The 97% maximum duty cycle is a practical ceiling for flyback converters that need long on-times to charge the primary inductance at low input voltage — the off-time reset voltage on the primary switch is the constraint, not the controller. ## Supply range and control features Vcc range is 7 V to 40 V, which covers 12 V and 24 V industrial buses, 36 V battery stacks, and the auxiliary winding of a 48 V telecom supply without an external regulator. The controller includes dead-time control and frequency control pins — dead-time adjustment lets you tailor the off-time margin for transformer core reset in half-bridge and push-pull stages. There is no clock sync input, so multiple TL594INs free-run; for synchronised multi-phase rails you would look at a PLL-based controller. 16-pin PDIP, 0.300-inch body width. The through-hole leads are 0.025-inch square, plated for solderability. The plastic body is standard epoxy; no moisture-sensitive level (MSL) concern for hand-soldering or wave-solder. If you need to pull one off a board, the leads are robust enough that you can desolder with a solder sucker or desoldering braid without lifting a pad — a QFN this is not.","metaTitle":"TL594IN PWM Controller, 1 kHz to 300 kHz, 97% Duty Cycle","metaDescription":"Texas Instruments TL594IN PWM controller. Switching frequency 1 kHz to 300 kHz, max duty cycle 97%, supply 7 V to 40 V. 16-pin PDIP.","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":"Through Hole","Output Phases":"1","Package / Case":"16-DIP (0.300\\\", 7.62mm)","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"Dead Time Control, Frequency Control","Duty Cycle (Max)":"97%","Number of Outputs":"2","Serial Interfaces":"-","Base Product Number":"TL594","Output Configuration":"Positive","Frequency - Switching":"1kHz ~ 300kHz","Operating Temperature":"-40°C~85°C(TA)","Synchronous Rectifier":"No","Supplier Device Package":"16-PDIP","Voltage - Supply (Vcc/Vdd)":"7V ~ 40V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e7f90ece3ceb8a04e3b238e384f44f54.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL594IN/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum duty cycle of TL594IN?","answer":"The maximum duty cycle is 97%. This is the on-time ceiling before the controller forces an off-time reset; it is set by the dead-time control pin and the external timing components."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL594IN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL594IN 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}}