{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SG3524N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SG3524N","canonicalUrl":"https://icboms.com/texas-instruments/SG3524N","factsUrl":"https://icboms.com/api/mcp/products/SG3524N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SG3524N, PWM controller IC, step-up/step-down/step-up/step-down function, buck/boost/flyback/forward/full-bridge/half-bridge/push-pull topology, 450kHz switching frequency, 45% max duty cycle, 8V-40V supply, 0°C to 70°C, 16-DIP through-hole package.","salesMarkdown":"## What the SG3524N is and where it fits The Texas Instruments SG3524N is a pulse-width modulation (PWM) control IC designed for a wide range of DC-DC converter topologies. It handles step-up, step-down, and step-up/step-down configurations, supporting buck, boost, flyback, forward converter, full-bridge, half-bridge, and push-pull designs. The part integrates the oscillator, error amplifier, reference, and dual transistor drivers on a single die, making it a self-contained controller for isolated and non-isolated supplies up to 450 kHz switching frequency. The 16-pin DIP through-hole package (16-PDIP) suits prototyping, legacy board repairs, and designs where wave-solder assembly is preferred over surface-mount. The 0°C to 70°C commercial temperature grade limits the part to indoor, climate-controlled environments — not for automotive under-hood or outdoor telecom cabinets without active thermal management. Control features include current limiting and frequency control, giving the designer basic loop compensation without external timers. The output configuration is positive and isolation-capable, so the SG3524N can drive a transformer in flyback or forward topologies with optocoupler feedback on the secondary side. ## 45% duty cycle — the topology gate The maximum duty cycle per output is 45%. ## 450 kHz switching — magnetics sizing trade-off The maximum oscillator frequency is 450 kHz. ## Supply range and output drive The 8V to 40V supply range covers unregulated rectified AC (e.g., 12V or 24V nominal rails) and industrial bus voltages. The two transistor-driver outputs each source and sink enough current to drive a power MOSFET gate directly for low-to-medium power levels. For higher gate charge, an external driver stage is advisable. ## Lifecycle and sourcing The SG3524N is listed as Active and ROHS3 compliant. For volume production or BOM freeze, the active status means no imminent LTB risk.","metaTitle":"SG3524N PWM Controller, 450kHz, 45% Duty Cycle, 16-DIP","metaDescription":"SG3524N PWM controller IC from Texas Instruments. 8V-40V supply, 450kHz switching, 45% max duty cycle. Through-hole 16-DIP. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"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)","lifecycle_stage":"eol_hot","Control Features":"Current Limit, Frequency Control","Duty Cycle (Max)":"45%","Number of Outputs":"2","Output Configuration":"Positive, Isolation Capable","Frequency - Switching":"450kHz","Operating Temperature":"0°C ~ 70°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"16-PDIP","Voltage - Supply (Vcc/Vdd)":"8V ~ 40V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.75","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.75000","currency":"USD"},{"qty":10,"price":"$0.66100","currency":"USD"},{"qty":25,"price":"$0.62120","currency":"USD"},{"qty":100,"price":"$0.50690","currency":"USD"},{"qty":250,"price":"$0.47080","currency":"USD"},{"qty":500,"price":"$0.40068","currency":"USD"},{"qty":1000,"price":"$0.32054","currency":"USD"},{"qty":2500,"price":"$0.29049","currency":"USD"},{"qty":5000,"price":"$0.28350","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1dedb2c0c2dff7580aff26f72a334197.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum duty cycle of the SG3524N?","answer":"This limit applies to each of the two transistor-driver outputs and is the key constraint for transformer reset in single-ended topologies."},{"question":"What is the SG3524N equivalent or replacement?","answer":"A close functional peer is the UCC2806DWTR from Texas Instruments, which offers a 50% duty cycle, synchronous rectifier capability, and a wider -40°C to 85°C temperature range, but it is surface-mount (SOIC) and not pin-compatible with the SG3524N's 16-DIP footprint. For a through-hole drop-in, no direct second-source is listed; verify pin compatibility against your layout."},{"question":"What is the SG3524N's function and topology support?","answer":"The SG3524N handles step-up, step-down, and step-up/step-down functions. Supported topologies include buck, boost, flyback, forward converter, full-bridge, half-bridge, and push-pull. The two outputs can drive a transformer for isolated designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SG3524N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SG3524N when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}