SP2637AF is a high perfomance offline♣∏•ε PSR power switch for low ×∑γpower AC/DC charger β‌ and adapter applications. It operates in primary​‍→™-side sensing and regulation.Thus, optoε≠₽-coupler and TL431 are not requi§βλΩred. In CC control, the output current an→€π₽d power setting can be adjusted extemally∑♦←  by the sense resistor Rcs at CS PIN. In↑•≥  CV control,multi-mode operat€★ions are utilized to achieve high ←πperformance and high efficiency. In addiπ←$tion, good load regulation is achieved by the§✘δ↔ built-in cable drop compensation. SP2637AF o≥∞perates in PFM in CC mode, and it o§>perates in PWM+PFM in CV→ε mode with frequency reduc☆₩αtion at light/medium load. The chip ≠×γ&consumes very low operation current. It a♠♥↔chieves less than 75mW standby power to mee≥♣t all global energy efficiency regulations. SP↕"π2637AF offers comprehensive protecti✔€™÷on coverage with auto-recovery feature in←∏cluding Cycle-by-Cycle curr× →ent limiting, VDD over ™ voltage protection (OVP ∏'÷),FB over voltage protection∞↔✔β,load short circuit protection, VDD unde∏¶γ☆r voltage lockout (UVLO)​‌, OTP etc. SP2637AF is offered in SOP8 £β‌$packages.