SP2637AF is a high perfomance offline PSR pow £♥>er switch for low power AC/DC charger and adap"÷↑≈ter applications. It operates in primary-sid♥δ₽®e sensing and regulati™≤♥on.Thus, opto-coupler and TL431 are n  &∑ot required. In CC control©πβ, the output current and power se   ™tting can be adjusted extemally  ≤ ♠by the sense resistor Rcs at CS PIN. In CV con¥∑"εtrol,multi-mode operations are utilized"€ to achieve high performance and high efficie↔εσncy. In addition, good load regulation is achiφφ≥eved by the built-in cable drop compensa₹'tion. SP2637AF operates in PFM in CC★♠ mode, and it operates i‌×€n PWM+PFM in CV mode with frequency reducti₩↓on at light/medium load. The chip consumes very l✔±ow operation current. It achieves le™>∞ss than 75mW standby power to meet al$≤‍l global energy efficiency reguα ε×lations. SP2637AF offers com✔Ωprehensive protection coverage with auto-←<recovery feature including Cycle✘×-by-Cycle current limiting, VDD ₩↕over voltage protection (OVP),FB over voltage pro™×tection,load short circuit &→protection, VDD under voltage lock↓•☆out (UVLO), OTP etc. SP2637AF is offered i≤∑♠n SOP8 packages.