onsemi FSEZ1317NY

FSEZ1317 Series 23 V 50 kHz Primary-Side-Regulation PWM Controller - DIP-7

Switching Controller, Current-mode, 53kHz Switching Freq-Max, PDIP7

PSR Flyback PWM Controller with MOSFET Integrated for LED Lighting

Secondary Side PWM Cntrlr PRIM 53KHz 7-Pin DIP Tube

This third-generation Primary Side Regulation (PSR) and highly integrated PWM controller provides several features to enhance the performance of low-power flyback converters. The proprietary topology, TRUECURRENT®, of FSEZ1317 enables precise CC regulation and simplified circuit design for battery-charger applications. A low-cost, smaller, and lighter charger results, as compared to a conventional design or a linear transformer. To minimize standby power consumption, the proprietary green mode provides off-time modulation to linearly decrease PWM frequency under light-load conditions. Green mode assists the power supply in meeting power conservation requirements. By using the FSEZ1317, a charger can be implemented with few external components and minimized cost.