D8537F is a high performance offline PWM Controller for low power AC/DC charger and adaptor
applications. It operates in primary-side sensing and regulation mode. Consequently, TL431 and opto-coupler
could be eliminated. In Constant Current(CC) control, the current and output power setting can be adjusted externally by the sense
resistor Rcs at CS pin. In Constant Voltage(CV) control, multi-mode operations are utilized to achieve high
performance and high efficiency. In addition, good load regulation is achieved by the built-in cable drop
compensation.D8537F operates in PFM in CC mode, and it operates in PWM+PFM in CV mode with frequency
reduction at light/medium load. The chip consumes very low operation current. It achieves less than 75mW
standby power to meet strict standby power standard. D8537F offers comprehensive protection coverage with auto-recovery feature including Cycle-by-Cycle
current limiting, VDD Over-Voltage Protection(OVP), feedback loop open protection, short circuit protection, Under-Voltage Lockout(UVLO),OTP etc. D8537F is offered in SOP7 package