SP2637AF is a high perfomance offline PSR power switch ₹for low power AC/DC charger and adapter applications. ☆It operates in primary-side sensing and regulation.Thus, opto-co>upler and TL431 are not required. In CC control, the output curre₽nt and power setting can be adjusted extemally by the sense resistor Rcs ✔at CS PIN. In CV control,multi-mode operations are utilized to achieve high perf↕ormance and high efficiency. In addition, good load regulation is achieved☆ by the built-in cable drop compensation. SP2637AF operates in PFM in CC mode, and it operates₽ in PWM+PFM in CV mode with frequency reduction at light/medium load. The chip consumeπs very low operation current. It achieves less than 75mW standby po★wer to meet all global energy efficiency regulations. SP2637AF offers comprehensive  protection coverage with auto-recovery feature incl"uding Cycle-by-Cycle current limiting, VDD over voltage protection (OVP),FB over voltage protec✘tion,load short circuit protection, VDD under voltage lockout (UVLO), OTP etc. SP263♥7AF is offered in SOP8 packages.