SG3525AP013TR

SG3525AP013TR is an STMicroelectronics voltage-mode PWM controller in an SO-16 package, for push-pull, half-bridge and full-bridge switching supplies: 8 V to 35 V supply range, an oscillator programmable from 100 Hz to 500 kHz, a 5.1 V reference held to ±1%, dual totem-pole outputs, and on-chip soft-start with undervoltage lockout. ST lists this exact code as Active on its eStore page. The grade is the selection point: this A-code part is the commercial 0 °C to 70 °C version — for industrial temperature range designs, ST's SG2525A family is the grade to specify instead, and the two are not paperwork-interchangeable on a qualified BOM. Selection advice: the P013TR suffix is the SO-16 tape-and-reel ordering form; the SG3525A architecture is decades mature, so the procurement risk is not the design but the code — counterfeit and re-marked controller stock circulates for classic PWM parts, so require lot traceability and quote the complete code including the packing suffix. Parameters verified against STMicroelectronics documentation.