SP2637AF is a high perfomance ofλ₹'®fline PSR power switch for low pow<♣er AC/DC charger and adapter applications. It op←♠erates in primary-side sensing and regulation.T 'ε hus, opto-coupler and TL431 are not r£λ ↕equired. In CC control, the output current and po♦→↑wer setting can be adjusted extemally by thσ$™e sense resistor Rcs at CS PIN. In CV γ™control,multi-mode operations are ≥×♦φutilized to achieve high performance and high ef∏ ficiency. In addition, good load regulation©™ is achieved by the buil₽&¶t-in cable drop compensation. S✔&P2637AF operates in PFM in CC mo•∑de, and it operates in PWM+PFM in CV mode wε•™ith frequency reduction at ligα↓‌ht/medium load. The chip consumes very low oper₩γα<ation current. It achieves less than 75mW ×↕≤↔standby power to meet all global energy e←☆¥♦fficiency regulations. SP2637AF offers®™π‍ comprehensive protectionπ>↔ coverage with auto-recovery feature includin±≈‌g Cycle-by-Cycle current limiting,δ↑ VDD over voltage protection (OV ∏Ω≈P),FB over voltage pr★"otection,load short circuit protectio♦↔n, VDD under voltage l π♦™ockout (UVLO), OTP etc. SP2637AF is o βffered in SOP8 packages.