onsemi FSEZ1317MY

PSR Flyback PWM Controller with MOSFET Integrated for LED Lighting

Switching Controller, Current-Mode, 53kHz Switching Freq-Max, PDSO7

Secondary Side PWM Cntrlr PRIM 53KHz 7-Pin SOP T/R

ac to DC Switching Converter Off-Line Switcher / Primary-Side-Regulation PWM with POWER MOSFET Integrated

Primary-side-control PWM controller with Mosfet

PWM CONTROLLER, PRIMARY, CV/CC, 7SOIC; Input Voltage:15V; Frequency:50kHz; Power Dissipation Pd:660mW; Supply Voltage Range:15V to 23V; Digital IC Case Style:SOIC; No. of Pins:7; Operating Temperature Range:-40°C to +105°C; MSL:MSL 1;RoHS Compliant: Yes

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.