{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SG3525AP013TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SG3525AP013TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SG3525AP013TR","factsUrl":"https://icboms.com/api/mcp/products/SG3525AP013TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SG3525AP013TR, PWM Controller, Step-Down/Step-Up/Step-Down, Buck/Push-Pull Topology, 100Hz-400kHz Switching, 49% Max Duty Cycle, 8V-35V Supply, 16-SOIC Package, Active, ROHS3 Compliant.","salesMarkdown":"## PWM controller for buck and push-pull converters The STMicroelectronics SG3525AP013TR is a PWM controller IC designed for step-down (buck) and step-up/step-down (push-pull) topologies. It integrates a transistor driver output stage, clock synchronization capability, and control features including enable and soft start. The device operates from an 8V to 35V supply rail and supports a switching frequency range from 100Hz to 400kHz, with a maximum duty cycle of 49%. ## 49% duty cycle — why it matters for push-pull The 49% maximum duty cycle is a deliberate design choice for push-pull converters. It leaves a dead-time gap that prevents simultaneous conduction of both primary-side switches, avoiding transformer saturation and shoot-through current. For buck designs, the same limit still provides adequate output voltage range at typical input-to-output ratios. If your design requires duty cycles above 50%, this controller will not support it — you would need a different topology or a controller with a wider duty-cycle window. ## Switching frequency range — sizing the magnetics The 100Hz to 400kHz switching frequency range gives the designer room to trade off magnetics size against switching losses. At the lower end, transformer and inductor cores are larger but core losses are minimal — useful for noise-sensitive or high-efficiency designs. At the upper end, magnetics shrink but gate-drive and core losses increase. The clock sync feature allows multiple SG3525AP013TR controllers to run at the same frequency, which simplifies input filter design in multi-phase or paralleled converter systems. The base product number is SG3525, which shares the same pinout and function across the family — if you already use a through-hole or DIP variant, the SOIC-16 footprint is the only difference. The SG3525AP013TR is supplied in a 16-pin SOIC package with a 3.90mm body width, surface-mount only. The supplier device package is designated 16-SO. No through-hole variant is available for this order code.","metaTitle":"STMicroelectronics SG3525AP013TR PWM Controller, 16-SOIC","metaDescription":"SG3525AP013TR PWM controller from STMicroelectronics. Step-down/step-up/step-down, buck/push-pull topology. 8V-35V supply, 49% max duty, 100Hz-400kHz switching.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Function":"Step-Down, Step-Up/Step-Down","Topology":"Buck, Push-Pull","Clock Sync":"Yes","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"Enable, Soft Start","Duty Cycle (Max)":"49%","Number of Outputs":"2","Serial Interfaces":"-","Base Product Number":"SG3525","Output Configuration":"Positive","Frequency - Switching":"100Hz ~ 400kHz","Operating Temperature":"0°C ~ 70°C (TA)","Synchronous Rectifier":"Yes","Supplier Device Package":"16-SO","Voltage - Supply (Vcc/Vdd)":"8V ~ 35V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.1200","priceTiers":[{"qty":1,"price":"$2.12000","currency":"USD"},{"qty":10,"price":"$1.90200","currency":"USD"},{"qty":25,"price":"$1.79400","currency":"USD"},{"qty":100,"price":"$1.52850","currency":"USD"},{"qty":250,"price":"$1.43520","currency":"USD"},{"qty":500,"price":"$1.25580","currency":"USD"},{"qty":1000,"price":"$1.04053","currency":"USD"},{"qty":2500,"price":"$0.96877","currency":"USD"},{"qty":5000,"price":"$0.93289","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1230eec92d96e859a8417e6d9cf22bc4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SG3525AP013TR/alternatives.json"},"ai":{"faq":[{"question":"What is the function of SG3525AP013TR?","answer":"The SG3525AP013TR is a PWM controller IC for step-down (buck) and step-up/step-down (push-pull) converter topologies. It provides a transistor driver output with a 49% maximum duty cycle and operates from an 8V to 35V supply."},{"question":"What is the equivalent or replacement for SG3525AP013TR?","answer":"The SG3525AP013TR is a surface-mount variant of the industry-standard SG3525 PWM controller family (base product number SG3525,). Pin-compatible equivalents include other SG3525 variants in the same 16-SOIC package from STMicroelectronics or licensed second sources. The key difference is the 'AP013TR' suffix specifies the tape-and-reel packaging and the specific temperature grade (0°C to 70°C,). For a direct drop-in, look for SG3525 devices in the 16-SOIC package with the same operating temperature range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SG3525AP013TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SG3525AP013TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}